Your Health Questions
Answered by Professionals

Several laxatives are considered safe for children when used appropriately, including osmotic options like polyethylene glycol (Miralax) and lactulose, stool softeners such as docusate, and glycerin suppositories for short-term relief in infants and toddlers. Stimulant laxatives like senna or bisacodyl may be used briefly in older children, while mineral oil and adult-strength products are generally discouraged for young kids due to aspiration and safety concerns. Dosing depends heavily on your child's age, weight, and the cause of constipation, so a pediatrician's guidance matters before starting any product. There are several important factors, warning signs, and dosing details to consider, including when constipation signals something more serious, so see below to understand more. If you are unsure whether your child's symptoms call for a laxative, a dietary change, or a doctor's visit, a free, instant, online <a href="https://ubiehealth.com/">symptom check</a> can help you clarify what may be driving the constipation and what reasonable next steps look like, in just a few minutes and without a waiting room. Last reviewed for medical accuracy: 10/22/2026

# Which Mouthwash Helps a Mouth Ulcer, and Which Stings for Nothing *Educational purposes only. The reader should consult a medical professional for personal medical advice.* Standing in the oral care aisle with a canker sore burning in your cheek, every bottle promises relief. Most of them will not deliver it. Some will actively make the next three days worse. Mouth ulcers heal on their own in seven to fourteen days. Nothing you rinse with changes that timeline much. What a rinse can do is reduce pain, prevent secondary infection, and keep you eating normally while the tissue repairs itself. That is a real benefit, but it is a narrower one than the packaging suggests. ## The Rinses That Actually Help **Chlorhexidine gluconate (0.12%).** Prescription in the US, available over the counter in some countries. It is an antiseptic that reduces bacterial load in the mouth, which lowers the chance a healing ulcer gets secondarily infected. Studies show modest reductions in ulcer duration and pain. Downsides: it stains teeth brown with extended use, alters taste temporarily, and should not be used for more than two weeks continuously. Use it twice daily, and do not rinse with water afterward, which washes away the residual effect. **Benzydamine hydrochloride (0.15%).** Available over the counter in the UK, Canada, Australia, and much of Europe. Not available in the US. It is a topical NSAID that provides genuine local anesthesia and anti-inflammatory action. For painful ulcers it is probably the single most useful rinse available. It can sting briefly on first contact with an ulcer, then numbs the area for thirty to sixty minutes. **Salt water.** Half a teaspoon of salt in a cup of warm water, swished and spat, three to four times daily. It is mildly antiseptic, reduces swelling through osmosis, and costs nothing. It stings initially. Clinical evidence is thin but mechanistically it makes sense, and generations of dentists have recommended it for good reason. **Baking soda rinse.** One teaspoon of sodium bicarbonate in a cup of warm water. It neutralizes acid in the mouth, which reduces the irritation that acidic foods cause to an open ulcer. Gentler than salt water and useful if your ulcers flare after citrus or tomato. **Steroid rinses.** Dexamethasone solution, used as a swish and spit, is prescribed for severe or recurrent aphthous ulceration. It suppresses the local immune response driving the ulcer. This is specialist territory, not a first-line option, but worth knowing it exists if ulcers are frequent and disabling. ## The Rinses That Make It Worse **Anything with alcohol.** Most conventional mouthwashes contain ethanol at concentrations between 14% and 26%. On intact tissue this is tolerable. On an open ulcer it is a chemical burn. The sting is not the rinse working. It is additional tissue damage on top

Several over-the-counter options are generally considered low risk during pregnancy, including acetaminophen for pain or fever, certain antacids like calcium carbonate for heartburn, loratadine or cetirizine for allergies, docusate or psyllium for constipation, and saline nasal sprays for congestion; however, timing, dosing, and trimester all matter, and common products such as ibuprofen, naproxen, aspirin, and some decongestants are often discouraged. Many combination cold and flu remedies also hide ingredients that are not recommended, so reading full labels is essential. Dose limits and duration of use can differ from standard adult guidance, and preexisting conditions may change what is appropriate for you. There are important exceptions and trimester-specific cautions to consider, so see the complete list below before taking anything. If you are weighing symptoms against medication risks, a few minutes of clarity can help you decide whether home care is enough or whether a clinician should weigh in; a free, instant, online <a href="https://ubiehealth.com/">symptom check</a> walks you through your specific symptoms, flags findings that deserve prompt attention in pregnancy, and helps you arrive at your next appointment with better questions and clearer next steps. Last reviewed for medical accuracy: 10/22/2026

Most over-the-counter medicines pass into breast milk in small amounts, but the amount transferred and the risk to a nursing baby vary widely by drug, dose, and timing. Acetaminophen and ibuprofen transfer at very low levels and are generally considered compatible with breastfeeding, while pseudoephedrine may reduce milk supply, sedating antihistamines like diphenhydramine can cause drowsiness or fussiness, and aspirin and codeine-containing products are usually avoided. Factors such as your baby's age, prematurity, how often you nurse, and the medicine's half-life all change the picture, so the details below matter before you take anything. If you are weighing symptom relief against your baby's safety, it helps to first clarify what is actually causing your symptoms, since the safest option for a headache is different from the safest option for allergies, a cold, or heartburn. Take a free, instant, online <a href="https://ubiehealth.com/">symptom check</a> to better understand what may be going on and what steps to take next with your clinician or pharmacist. Last reviewed for medical accuracy: 10/22/2026

Several supplements are commonly stopped 1 to 2 weeks before surgery because they can thin the blood or interfere with clotting, including fish oil, vitamin E, garlic, ginger, ginkgo biloba, ginseng, turmeric or curcumin, dong quai, feverfew, saw palmetto, and high-dose vitamin C, though timing varies by product, dose, and procedure. There are several important factors to consider, including your other medications, anesthesia plans, and surgeon-specific instructions, so see below to understand more before you stop or continue anything. If you are noticing easy bruising, unusual bleeding, or symptoms that make you unsure whether your supplements are affecting you, getting clarity early matters because pre-surgical bleeding risk is easier to manage before the day of your procedure. A free, instant, online <a href="https://ubiehealth.com/">symptom check</a> can help you organize what you are experiencing, flag issues worth raising with your surgeon or anesthesiologist, and point you toward the right next step. It takes just a few minutes, costs nothing, and gives you a clearer starting point for the conversation that protects your surgery. Last reviewed for medical accuracy: 10/22/2026

Certain post-surgical symptoms warrant an immediate call to your surgeon rather than waiting for your next appointment, including fever above 101°F, spreading redness or warmth around the incision, pus or foul-smelling drainage, wound edges separating, or sudden increases in pain that medication no longer controls. Call urgently for chest pain, shortness of breath, calf swelling or tenderness, heavy bleeding that soaks through dressings, inability to urinate, persistent vomiting, or no bowel movement with a swollen, hard abdomen. Signs that mean emergency care instead of a phone call include fainting, confusion, severe difficulty breathing, or uncontrolled bleeding. Timing, surgery type, and your individual risk factors all change how urgent a symptom is, and several important distinctions are easy to miss. There are several factors to consider, and the complete answer below explains which symptoms can safely wait and which cannot. If you are unsure whether what you are feeling is normal healing or an early warning sign, you do not have to guess while the hours tick by. A free, instant, online <a href="https://ubiehealth.com/">symptom check</a> walks you through your specific symptoms in just a few minutes and helps you see how urgent they may be, so you can decide with more confidence whether to call your surgeon now, seek emergency care, or simply keep monitoring. Clarity on next steps is one of the most useful things you can have during recovery, and it takes only a moment to get. Last reviewed for medical accuracy: 10/22/2025

Postoperative nausea and vomiting most often affects people who are female, under 50, nonsmokers, or who have a history of motion sickness or prior sickness after anaesthesia, with risk rising further after long procedures, general anaesthesia with inhaled agents, and opioid pain relief. Prevention works best when it is layered: preventive antiemetics such as ondansetron and dexamethasone, propofol-based or regional anaesthesia instead of volatile gases, opioid-sparing pain control, and adequate hydration before and after surgery. Several other factors, including surgery type, individual risk scoring, and timing of medications, change how likely you are to get sick, so see below for the complete details that the summary leaves out. If you are already feeling nauseated, dizzy, or unwell after an anaesthetic and are unsure whether this is expected recovery or something that needs attention, a few minutes of structured questions can bring clarity fast. Take a free, instant, online <a href="https://ubiehealth.com/">symptom check</a> to understand what your symptoms may mean and what sensible next steps look like. Last reviewed for medical accuracy: 10/22/2026

Aspirin is generally not recommended for children and teens under 18 due to the risk of Reye's syndrome, nor for people with aspirin or NSAID allergies, bleeding disorders, active stomach ulcers, severe kidney or liver disease, uncontrolled high blood pressure, or asthma with nasal polyps. Caution also applies during the third trimester of pregnancy, while breastfeeding, before surgery, with heavy alcohol use, and when taking blood thinners, other NSAIDs, steroids, or certain diabetes and blood pressure medications. Age, dosage, and whether the aspirin is for pain or heart protection all change the calculation, so there are several important factors to consider before taking it. See below to understand the full list of conditions, drug interactions, and safer alternatives. Because pain has many causes and the wrong medication can mask or worsen the real problem, it helps to clarify what is actually driving your symptoms before reaching for a pill, and a free, instant, online <a href="https://ubiehealth.com/">symptom check</a> can help you understand possible causes and decide whether self-care, a pharmacist, or a doctor is the right next step. Last reviewed for medical accuracy: 10/22/2026

Beta blockers are usually continued through the morning of surgery because stopping them abruptly can trigger rebound high blood pressure, a racing heart, chest pain, or even a heart attack during or after the procedure. Staying on your usual dose also helps keep your heart rate and blood pressure steady while under anesthesia, which lowers cardiac risk in people with coronary artery disease, prior heart attack, or long-term beta blocker use. That said, timing, dosing, and whether to hold a dose depend on your blood pressure, heart rate, kidney function, and the type of surgery planned, so there are several important factors to consider before your operation. See the complete answer below for the details your surgical and anesthesia team will weigh. If you are feeling palpitations, dizziness, chest discomfort, or unusual fatigue while preparing for surgery, a free, instant online <a href="https://ubiehealth.com/">symptom check</a> can help you organize what you are experiencing and understand which next steps and questions to raise with your doctor before your procedure date. Last reviewed for medical accuracy: 10/22/2026

Biologic injections are deliberately scheduled around surgery because these medications suppress parts of the immune system, which can raise infection risk and slow wound healing if a dose is active during the operation and early recovery. Surgeons and rheumatologists typically time the last pre-op dose so the procedure falls at the end of a dosing cycle, then restart once incisions show healthy healing and no signs of infection, with the exact timing depending on the drug's half-life, your condition, and the complexity of the surgery. Holding a biologic too long, however, can trigger a disease flare that makes rehabilitation harder, so the goal is a balance rather than a fixed rule. There are several important factors to consider, including drug-specific wait times and flare risk. See below to understand more. If you are weighing surgery while on a biologic and noticing new symptoms such as fever, joint swelling, redness around a wound, or unusual fatigue, getting clarity quickly matters, because those details can change how your medication is timed. A free, instant, online <a href="https://ubiehealth.com/">symptom check</a> can help you organize what you are experiencing, see which possible causes fit your pattern, and understand which questions to raise with your surgeon or rheumatologist before your next dose. It takes only a few minutes, requires no appointment, and gives you a clearer starting point for the conversation that shapes your surgical plan. Last reviewed for medical accuracy: 10/22/2026

An active dental infection can postpone surgery because bacteria from the mouth can enter the bloodstream and seed a surgical site, implant, or heart valve, raising the risk of serious postoperative infection, sepsis, and poor wound healing. Anesthesia also becomes riskier when swelling, an abscess, or loose and damaged teeth could compromise the airway during intubation, and untreated infection can blunt immune response and complicate antibiotic choices. Most teams prefer to drain or treat the infection and confirm resolution before proceeding, though timing depends on the urgency of the operation, your overall health, and whether hardware or heart surgery is involved. Several important factors influence how long a delay may last and what clearance requires, so see below to understand more. If you have mouth pain, facial swelling, fever, or a bad taste before a scheduled procedure, a free, instant, online <a href="https://ubiehealth.com/">symptom check</a> can help you gauge how urgent your symptoms are and prepare the right questions for your surgeon and dentist before your date is at risk. Last reviewed for medical accuracy: 10/22/2026

A family history of anaesthesia problems matters because several serious reactions, including malignant hyperthermia and pseudocholinesterase deficiency, are inherited and can cause dangerous fevers, muscle rigidity, or prolonged paralysis after routine anaesthetic drugs. Telling your anaesthetist about any relative who had a severe reaction, unexpected breathing difficulty, or an unexplained death during surgery allows safer drug alternatives, specialist testing, and emergency planning before your procedure. Important details about which relatives count, which symptoms to report, and how genetic testing works are explained below. If you have symptoms, a surgery scheduled, or unanswered questions about your own risk, a free, instant online <a href="https://ubiehealth.com/">symptom check</a> can help you organize what you are experiencing and identify which concerns to raise first. It takes only a few minutes, is available anytime, and gives you clearer language to use when discussing your family history with your surgical team. Last reviewed for medical accuracy: 10/22/2026

Household teaspoons and tablespoons vary widely in size, so a single "spoonful" can deliver anywhere from about half to double the medicine a child actually needs, which risks both underdosing and dangerous overdosing with drugs like acetaminophen or ibuprofen. Dosing errors are also more likely because spoons cannot be read precisely, parents often confuse teaspoons with tablespoons, and liquid medicine concentrations differ between infant and children's formulas. Oral syringes, dosing cups, and milliliter-marked droppers are far more accurate, and pediatric doses should be based on your child's current weight rather than age alone. Several other factors affect safe dosing, including medication strength, timing between doses, and signs of overdose to watch for, so see below to understand more before giving the next dose. If your child is unwell and you are unsure whether symptoms are from illness, a reaction, or a dosing mistake, a few minutes of clarity can help you decide whether to watch at home, call your pediatrician, or seek urgent care: take a free, instant, online <a href="https://ubiehealth.com/">symptom check</a> to review what the symptoms may mean and what sensible next steps look like. Last reviewed for medical accuracy: 10/22/2026

A loose tooth is checked before a general anaesthetic because the airway equipment used during intubation can dislodge it, creating a risk that the tooth could be inhaled into the lungs or swallowed, which may cause airway obstruction, infection, or the need for emergency removal. Anaesthetists assess tooth mobility, dental work such as crowns and bridges, and whether a baby tooth is close to falling out, then decide whether to protect it, remove it beforehand, or adjust their airway technique. Several factors influence this decision, including age, the type of surgery, and how loose the tooth actually is, so see below to understand more. Documenting a loose tooth in advance also protects you, since any dental damage can be identified and addressed promptly after the procedure. If you are unsure whether your loose tooth, mouth pain, or gum swelling needs attention before surgery, a free, instant, online <a href="https://ubiehealth.com/">symptom check</a> can help you organize your symptoms and understand what to raise with your dentist, surgeon, or anaesthetist, so nothing important gets missed at your pre-operative appointment. Last reviewed for medical accuracy: 10/22/2026

Pregnancy tests are routinely performed before surgery because anesthesia, certain medications, radiation from imaging, and the physical stress of an operation can pose risks to an early, undetected pregnancy, and may change how a procedure is planned or timed. Hospitals often test anyone of childbearing age, even those using contraception or reporting no chance of pregnancy, because very early pregnancy can be missed and the consequences of a false assumption are serious. A positive result does not always mean surgery is canceled; urgent and emergency procedures usually proceed with added precautions, while elective ones may be postponed. Policies, test types (urine versus blood), timing, and consent and privacy rules vary by facility, age, and procedure, so there are several important factors to consider. See below to understand the full details before your appointment. If you are facing surgery and unsure about pregnancy symptoms, a late period, or how your health history could affect your procedure, getting clarity early matters. A free, instant, online <a href="https://ubiehealth.com/">symptom check</a> can help you sort through what you are experiencing in minutes, privately and without an appointment. It can also help you frame the right questions for your surgical team and point you toward the next step, whether that is a test, a call to your clinic, or prompt in-person care. Last reviewed for medical accuracy: 10/22/2025

After a coronary stent, you must stay on antiplatelet medication while the artery heals, and stopping it too soon can trigger stent thrombosis, heart attack, or death, which is why elective surgery is typically postponed. General guidance suggests waiting at least 30 days after a bare-metal or drug-eluting stent placed for stable disease, and 6 to 12 months when the stent followed a heart attack, though urgent or cancer surgery may proceed sooner with cardiology input. Your exact timeline depends on the stent type and location, how complex the procedure was, your bleeding risk, and whether aspirin can be continued through the operation. Several important factors can shift this window in either direction, so review the complete details below before you cancel or schedule anything. If you are weighing surgery timing, new chest discomfort, shortness of breath, or bleeding concerns after a stent, a free, instant online <a href="https://ubiehealth.com/">symptom check</a> can help you organize what you are feeling in minutes and clarify which questions to bring to your cardiologist and surgeon before your next appointment. Last reviewed for medical accuracy: 10/22/2026

Repeat blood tests often differ because of normal biological variation, timing of the draw, hydration, food or alcohol intake, recent exercise, medications, and even posture during collection. Lab factors also matter, including different analyzers, reference ranges, sample handling, and small measurement errors that are expected in every assay. Many results shift slightly without any change in your health, while a meaningful trend across several tests can signal something worth investigating. There are several important factors to consider before assuming a new number means a new problem, so see below for the complete explanation and the specific details that can change how your results should be interpreted. If you are trying to make sense of shifting lab values alongside symptoms you have noticed, a free, instant, online <a href="https://ubiehealth.com/">symptom check</a> can help you organize what you are experiencing, see which conditions may fit the pattern, and understand which questions or follow-up tests to raise with your doctor next. Last reviewed for medical accuracy: 10/22/2026

A sore throat after a breathing tube is common because the tube passes directly over the delicate tissues of the throat, voice box, and vocal cords, causing friction, pressure, swelling, and dryness. Most people notice scratchiness, hoarseness, or pain when swallowing within the first few hours after waking, and symptoms usually fade within one to three days. Several factors affect how bad it feels and how long it lasts, including tube size, how long it stayed in place, suctioning, dry anesthetic gases, and whether the procedure was planned or emergent. There are also warning signs that point to something more than normal irritation, such as worsening pain after day three, fever, trouble breathing, drooling, or a voice that does not recover, so see below for the complete answer and the important details to consider. If you are unsure whether your throat pain is routine post-intubation irritation or a sign of infection, swelling, or vocal cord injury, it helps to get a structured read on your symptoms before deciding whether to wait it out or call your care team. A free, instant, online <a href="https://ubiehealth.com/">symptom check</a> asks the same kinds of questions a clinician would, factors in your recent procedure and current symptoms, and points you toward sensible next steps in just a few minutes. Last reviewed for medical accuracy: 10/22/2026

A pimple, boil, rash, insect bite, or any break in the skin near a planned incision can carry bacteria such as Staph or Strep that may travel into deeper tissue, bone, or an implant once the skin is opened. Surgeons postpone procedures because a surgical site infection can lead to wound breakdown, sepsis, implant removal, repeat operations, and far longer recovery, risks that outweigh the inconvenience of rescheduling. Timing, location, size, and whether the spot is draining all influence how long the delay lasts, and antibiotics or a dermatology review may be needed first. Several important factors determine whether your surgery proceeds, gets moved by days, or needs weeks of healing, so see below to understand more before assuming the worst. If you have noticed a new spot, swelling, redness, or warmth anywhere near your upcoming incision, the smartest next step is to get clarity fast rather than wait and worry until the pre-op call. A free, instant, online <a href="https://ubiehealth.com/">symptom check</a> can help you describe what you are seeing, understand which signs point toward infection versus harmless irritation, and know what to tell your surgical team today, because reporting it early is what keeps your procedure on track. Last reviewed for medical accuracy: 10/22/2026

A urinary tract infection can delay surgery because an active infection raises the risk of bacteria spreading through the bloodstream during the procedure, leading to sepsis, poor wound healing, or infection of surgical implants. Anesthesia and surgical stress also suppress immune defenses, which can allow a contained bladder infection to progress to the kidneys. Surgeons often postpone elective operations until a urine culture clears and antibiotics are completed, though urgent procedures may continue with antibiotic coverage. Several factors influence whether your operation goes ahead, including the type of surgery, your symptoms, and whether bacteria are present without symptoms. See below to understand more about the details that matter in these decisions. If you are noticing burning, urgency, cloudy urine, or back pain ahead of a scheduled procedure, acting quickly matters, since confirming and treating an infection early can be the difference between a short delay and a cancelled operation. A free, instant online <a href="https://ubiehealth.com/">symptom check</a> can help you clarify what your symptoms may indicate, understand how urgent they are, and prepare specific questions for your surgical team or GP before your pre-op assessment. Last reviewed for medical accuracy: 10/22/2026

ACE inhibitors such as ramipril, lisinopril, and enalapril are sometimes paused before surgery because they blunt the body's normal blood pressure response, raising the risk of significant hypotension (vasodilatory shock) once anaesthetic drugs are given, and they can also contribute to kidney strain or potassium shifts around the time of an operation. Whether your dose is held, usually for 12 to 24 hours before surgery, depends on why you take it, with heart failure patients often advised to continue while those treated for hypertension alone are more likely to skip a dose, so there are several important factors to weigh and you can see below to understand more. Never stop a prescribed ACE inhibitor on your own, as abrupt changes can destabilise blood pressure, and only your surgical, anaesthetic, or prescribing team can confirm the right plan for you. If you are noticing symptoms like dizziness, swelling, a persistent dry cough, or unusual fatigue while taking one of these medicines, it helps to clarify what may be driving them before your pre-operative appointment. Taking a free, instant, online <a href="https://ubiehealth.com/">symptom check</a> can help you organise what you are experiencing, understand possible causes, and arrive prepared with the right questions about your medication and upcoming anaesthesia. Last reviewed for medical accuracy: 10/22/2026

Activated charcoal is often marketed as a quick fix for bloating, but there is little solid evidence it works, and it can backfire by binding to medications, supplements, and nutrients so your body absorbs less of what it needs. It may also cause constipation, black stools, and worsened abdominal discomfort, and it does nothing to address the real drivers of bloating such as constipation, food intolerances, SIBO, IBS, or gastroparesis. There are important exceptions, dosing concerns, and safer alternatives to weigh, and the details below explain when charcoal is genuinely used in medicine versus when it is just a trend. See below to understand more about what actually relieves bloating and which symptoms signal something more serious. Because persistent bloating can point to several very different underlying causes, a free, instant, online <a href="https://ubiehealth.com/">symptom check</a> can help you narrow down likely explanations in minutes and decide whether to adjust your diet, try a different remedy, or see a clinician next. Last reviewed for medical accuracy: 10/22/2026

Using Afrin (oxymetazoline) for longer than three consecutive days can trigger rebound congestion, also called rhinitis medicamentosa, where the nasal passages swell again as each dose wears off and the stuffiness returns worse than before. This happens because the medication constricts blood vessels in the nose, and with repeated use those vessels become dependent on the spray to stay open, leading many people into a cycle of dosing more often for less relief. Other factors matter too, including how long you have already been using the spray, whether you have high blood pressure or glaucoma, and whether an underlying allergy or sinus infection is the real cause of your congestion. There are several important details and safe tapering strategies to consider, so see below to understand more. If your congestion keeps coming back, has lasted more than a week, or has you reaching for nasal spray every few hours, it is worth clarifying what is actually driving it before you treat it again. A free, instant, online <a href="https://ubiehealth.com/">symptom check</a> can help you sort rebound congestion from allergies, sinusitis, or other causes in just a few minutes, and point you toward the right next step, whether that is simply stopping the spray or seeing a clinician. Last reviewed for medical accuracy: 10/22/2026

A pre-operative ECG records your heart's electrical activity to reveal arrhythmias, signs of a past silent heart attack, poor blood flow, or strain that could raise your risk during anesthesia and surgery. It is most often ordered for adults over a certain age, people with known heart or lung disease, diabetes, high blood pressure, or anyone scheduled for major surgery, while many healthy patients having minor procedures do not need one at all. The tracing also gives your surgical and anesthesia team a baseline to compare against if your heart rhythm changes during or after the operation. Whether an ECG is recommended for you depends on several factors, including your symptoms, medications, and the type of procedure, and the details below explain what each abnormal finding can mean and when further testing is needed. If you have been noticing chest discomfort, palpitations, breathlessness, or dizziness ahead of a planned procedure, those symptoms are worth sorting out now rather than on the day of surgery, so take a free, instant online <a href="https://ubiehealth.com/">symptom check</a> to better understand what may be driving them and what to discuss with your doctor next. Last reviewed for medical accuracy: 10/22/2026

Anaemia is corrected before surgery because low haemoglobin raises the risk of transfusion, infection, slower wound healing, longer hospital stays and complications during and after the procedure, and iron or other treatments need weeks to rebuild red blood cells properly. Waiting until after an operation means the body must recover from both blood loss and an existing deficiency at the same time, which delays healing and can worsen fatigue and heart strain. Pre-operative testing also uncovers the cause, such as iron deficiency, bleeding in the gut, kidney disease or vitamin B12 deficiency, which may change the surgical plan. There are several important factors and timelines to consider, so see below to understand more. If you have been told your blood count is low, or you are facing surgery and feel unusually tired, breathless, dizzy or pale, it helps to know what your symptoms may point to before your next appointment. A free, instant, online <a href="https://ubiehealth.com/">symptom check</a> can help you organise what you are experiencing, surface questions worth raising with your surgeon or anaesthetist, and clarify sensible next steps so anaemia is addressed in time rather than after the fact. Last reviewed for medical accuracy: 10/22/2026

Antibiotics only kill bacteria, and the common cold is caused by viruses such as rhinovirus, so they have no effect on your symptoms or recovery time. Taking them anyway can cause side effects like diarrhea, rash, and yeast infections, while also fueling antibiotic resistance that makes future infections harder to treat. Most colds clear on their own within 7 to 10 days with rest, fluids, and symptom relief, though certain warning signs, including fever lasting more than three days, worsening symptoms after initial improvement, facial pain, or trouble breathing, can signal a bacterial complication that does need treatment. There are several important factors to consider, including which symptoms justify seeing a clinician and when antibiotics are genuinely appropriate, so see below to understand more. Because cold symptoms and early bacterial infections can look nearly identical, guessing can mean either unnecessary medication or a missed diagnosis, and a free, instant, online <a href="https://ubiehealth.com/">symptom check</a> can help you sort out what is likely driving your symptoms and what step to take next. Last reviewed for medical accuracy: 10/22/2026

Diphenhydramine (Benadryl) is a first-generation antihistamine that crosses into the brain and blocks acetylcholine, which in adults over 65 can trigger confusion, memory problems, dizziness, blurred vision, dry mouth, urinary retention, constipation, and next-day grogginess that raises fall and fracture risk. Because of this, it appears on the American Geriatrics Society Beers Criteria list of medications older adults should generally avoid, and long-term anticholinergic use has been linked in research to higher dementia risk. Risks climb further when it is combined with other sedatives or hidden in "PM" sleep aids and multi-symptom cold products, and safer alternatives such as loratadine, cetirizine, or fexofenadine exist for allergies. There are several important factors, dosing cautions, and alternative options to weigh before stopping or continuing it, so see below to understand more. If you or an older loved one is dealing with sleeplessness, allergy symptoms, new confusion, or dizziness and you are unsure whether a medication is the cause, a free, instant, online <a href="https://ubiehealth.com/">symptom check</a> can help you organize your symptoms, flag concerning patterns in minutes, and walk away with clear, personalized guidance on what to do next and when to involve a clinician. Last reviewed for medical accuracy: 10/22/2026

Benzocaine teething gels are not recommended for babies because they can trigger methemoglobinemia, a rare but potentially life threatening condition that reduces the oxygen carried in a baby's blood, which is why the FDA has warned against using these products in children under 2 and asked manufacturers to stop marketing them for teething pain. Warning signs can appear within minutes to hours and include pale, gray or blue colored skin, lips or nail beds, shortness of breath, unusual fatigue, rapid heartbeat or irritability. Benzocaine also numbs the gag reflex and is quickly washed away by saliva, so the risk often outweighs the brief relief it may provide. Safer comfort measures, dosing concerns, and the symptoms that signal an emergency are explained below, along with details every caregiver should review before using any oral numbing product. If your baby is fussy, drooling, or you are worried about a reaction to a teething product, it helps to get clarity fast rather than guessing. A free, instant, online <a href="https://ubiehealth.com/">symptom check</a> walks you through targeted questions, highlights possible causes based on the specific signs you describe, and helps you judge whether home care is reasonable or whether this warrants urgent medical attention. It takes only a few minutes, requires no appointment, and can help you arrive at a doctor's visit with clearer information and better questions. Last reviewed for medical accuracy: 10/22/2025

Pregnancy causes major physiological shifts, including a 30 to 50 percent rise in plasma volume, hormonal surges, and faster kidney filtration, which dilute or alter many lab values so a result flagged "abnormal" can be entirely normal for that trimester. Hemoglobin, hematocrit, sodium, creatinine, TSH, and clotting factors all follow pregnancy-specific reference ranges, while certain markers such as liver enzymes should stay stable and may point to a real problem if they move. There are several important factors and trimester-by-trimester differences to consider, explained in the complete answer below. Because the same number can mean one thing at 10 weeks and something very different at 34 weeks, pairing your results with a clear read on your symptoms helps you know what deserves urgent attention. Take a free, instant, online <a href="https://ubiehealth.com/">symptom check</a> to better understand what your symptoms may mean and how to navigate your next steps with confidence. Last reviewed for medical accuracy: 10/22/2026

Regular cannabis use can raise the amount of anaesthetic needed, with studies showing frequent users often require significantly higher doses of propofol, sedatives, and opioids to reach and maintain surgical sedation. This happens because THC acts on cannabinoid receptors in the brain, builds cross-tolerance with other central nervous system depressants, and can alter liver enzyme activity that clears anaesthetic drugs, while also affecting heart rate, blood pressure, and airway reactivity. How much your dose changes depends on how often and how recently you used, the route (smoked vs edible), potency, and your other medications, so there are several important factors to consider below. Telling your anaesthetist about cannabis use is essential, because unreported use is linked to higher rates of intraoperative awareness, airway complications, and worse post-operative pain control. If you are preparing for surgery or noticing symptoms like chest tightness, nausea, dizziness, or unusual pain, a free, instant online <a href="https://ubiehealth.com/">symptom check</a> can help you organize what you are experiencing and decide what to raise with your medical team next. Last reviewed for medical accuracy: 10/22/2026