Your Health Questions
Answered by Professionals

Niacin may modestly improve erections for some men with dyslipidemia or endothelial dysfunction and mild to moderate ED by supporting vascular health and nitric oxide, but evidence is limited and it is not helpful for many cases of severe ED. There are several factors to consider, and individual risks and benefits vary. Side effects can include flushing and itching, stomach upset, higher blood sugar and uric acid, liver injury, arrhythmias, and small increases in bleeding and infections, so consult a clinician first and see below for who might benefit or avoid it, safer dosing and monitoring, and how to combine with other ED treatments.

There are several factors to consider. Niacin can improve cholesterol and endothelial function that supports circulation, which may indirectly help erections, but evidence in ED is limited and it is not a stand-alone cure; see details below. For adults over 65, safety and monitoring are key, as flushing, liver, glucose, and uric acid changes and statin interactions can occur, and dosing plus which tests to check are outlined below to help you decide next steps with your clinician.

Yohimbe may offer only modest ED benefit and can raise blood pressure and heart rate, worsen heart or liver disease, and interact with common medications, so do not start it after 65 without a doctor’s guidance and appropriate testing. There are several factors to consider. See below to understand more. For safer next steps like cardiac screening, lab checks, medication review, dosing if approved, daily blood pressure monitoring, and urgent warning signs, see the complete guidance below.

Folic acid can be worth trying for some men over 65 with erectile dysfunction, especially when ED is mild to moderate, homocysteine is elevated, or vascular disease is present; evidence suggests modest benefits when used alongside standard treatments. See below to understand more. A common plan is 5 mg daily for 8 to 12 weeks while also optimizing cardiovascular health and checking B12 levels and medication interactions, with guidance from your doctor. There are several factors to consider, and key details that could change your next steps are outlined below.

Over 65 and considering ashwagandha for ED? There are several factors to consider; it may lower stress and modestly support testosterone and blood flow, but evidence in older adults is limited, so benefits vary. Avoid or use only with medical guidance if you have thyroid disease, autoimmune disorders or hormone-sensitive cancers, significant liver disease, low blood pressure, take sedatives or blood pressure, thyroid, diabetes, or immunosuppressive medications, or have surgery planned; see the complete details below, including dosing, interactions, lab monitoring, and red flags that should prompt urgent care.

There are several factors to consider: in men over 65, tongkat ali can help erectile function but may pose risks to the liver, cause blood pressure fluctuations that interact with heart medicines, and has uncertain effects on the prostate. For safer use, work with your doctor, choose a quality standardized extract, start low, and monitor liver enzymes, home blood pressure, and PSA; see the complete guidance below for exact dosing, monitoring timelines, red flags, and who should avoid it.

Korean red ginseng can modestly improve erection firmness, response time, and confidence in many men over 65, with clinical trials showing benefits after 6 to 8 weeks at about 600 to 1,200 mg taken two to three times daily and mostly mild side effects. There are several factors to consider; see below to understand more. Key risks include interactions that may reduce warfarin’s effect, alter blood pressure, or lower blood sugar when combined with diabetes drugs, plus possible insomnia or hormone related concerns, so review your medications with a clinician and use a standardized, third party tested product; dosing, monitoring tips, lifestyle add ons, and red flag symptoms that should prompt urgent care are outlined below.

Ashwagandha may help erections for some men by reducing stress and cortisol and modestly supporting testosterone and mood, with randomized trials showing significant stress reductions and improvements in male reproductive markers. There are several factors to consider, including proper dosing, safety issues like thyroid or autoimmune disease, possible drug interactions, and the need to rule out cardiovascular or hormonal causes if ED persists. See the complete answer below for specifics that could guide your next steps.

Folic acid, often called the blood flow vitamin, can modestly support erections by lowering homocysteine and boosting nitric oxide, with the clearest benefit in men who are folate deficient or have high homocysteine, but it is not a cure. Doses studied are 1 to 5 mg daily for 4 to 12 weeks and it may work best alongside standard ED treatments; check B12 and talk to your doctor if you have liver or kidney disease, epilepsy, or a cancer history due to possible interactions. There are several factors to consider. See below for the full evidence, who benefits most, safety cautions, and practical next steps.

Korean red ginseng, the “energy root,” can deliver modest, clinically meaningful improvements for mild to moderate erectile dysfunction in randomized trials, but results are slower and generally milder than standard medications. There are several factors to consider; see below for dosing ranges, product quality, expected timelines, safety and interaction risks (like blood thinners and diabetes medicines), and guidance on when to involve a clinician or combine with PDE5 inhibitors.

Yohimbe (yohimbine) can significantly raise heart rate and blood pressure, triggering palpitations and anxiety, and it is especially risky if you have heart disease, high blood pressure, liver problems, or take interacting medications. There are several factors to consider, including dosing, monitoring, who should avoid it, safer alternatives, and when to seek care; see below for complete details that could shape your next steps.

Niacin, or vitamin B3, may improve blood flow and erections by boosting nitric oxide, improving endothelial function, and supporting healthier cholesterol; early studies suggest potential benefits, particularly when high cholesterol and ED coexist. There are several factors to consider, including dose and formulation, side effects like flushing and possible liver or glucose changes, and the need to assess cardiovascular causes of ED. See the complete details below for guidance on monitoring, combining with ED medicines, and deciding next steps with your clinician.

Tongkat Ali may modestly help erectile function and libido based on limited short human trials, typically at 200 to 400 mg of standardized extract for 8 to 12 weeks. There are several factors to consider. See below to understand more, including how evidence quality and product standardization affect results. Safety red flags include liver or kidney disease, prostate conditions, cardiovascular issues, mood or sleep changes, medication interactions, and risks from adulterated or low quality supplements. Discuss with a clinician first and use it only as an add-on to proven ED treatments; key details that could guide your next steps are outlined below.

Tongkat Ali may help some men with erectile dysfunction by raising testosterone and lowering stress hormones, with a placebo-controlled study showing improved erection quality after about 8 to 12 weeks on a standardized extract at 200 to 300 mg daily. See details below. There are several factors to consider, including product quality, dosing, side effects and drug interactions, and the possibility that ED signals cardiovascular or metabolic disease; for complete guidance and next steps to discuss with your clinician, review the information below.

Research shows men with low vitamin D have higher rates of erectile dysfunction, and a randomized trial found that correcting deficiency improved erectile function in some men; there are several factors to consider, including vascular, inflammatory, and hormonal pathways. See more details below. Before starting supplements, check your 25(OH)D level and talk with a clinician about safe dosing and monitoring, since ED can also signal cardiovascular or metabolic disease; the complete guidance on who benefits most, safety, and next step recommendations is below.

Vitamin D can support erectile function in men over 65 by improving endothelial nitric oxide and blood flow; consider supplementing if a 25-hydroxyvitamin D blood test is low, using 50,000 IU D3 weekly for 8–12 weeks when deficient or 1,000–2,000 IU daily if insufficient, with a target of 40–60 ng/mL. There are several factors to consider, including cardiovascular risks, medications, and toxicity limits, so recheck levels after 3–4 months, avoid more than 10,000 IU daily without medical supervision, and pair vitamin D with lifestyle and hormone evaluation; see below for important details that could shape your next steps.

Colon cancer stool can show blood (bright red or dark, tarry), become pencil thin or ribbon-like, be coated in mucus, change color, and come with persistent shifts like alternating constipation and diarrhea or a lingering sense of incomplete emptying. Because these signs can overlap with less serious issues, ongoing bleeding, lasting bowel habit changes, weight loss, or abdominal pain should prompt medical care and screening; there are several important details and next steps to consider, which are outlined below.

Green poop is usually harmless and temporary, most often from eating green foods or dyes, taking iron supplements, or stool moving too quickly during diarrhea; less commonly it can come from infections, antibiotic effects, or absorption problems like celiac or Crohn’s. There are several factors to consider. See below to understand more. If it lasts more than 2 days or comes with abdominal pain, fever, dehydration, blood or black stools, or weight loss, talk to a clinician; key home-care tips and what to expect from medical evaluation are outlined below.

Green stool is usually harmless and most often comes from what you ate, faster gut transit with diarrhea, or medications and supplements like iron; there are several factors to consider, and the fuller explanation below covers how bile, infections, and other gut conditions can change stool color. If it lasts more than a couple of days or comes with severe pain, fever, blood, dehydration, weight loss, or jaundice, seek medical advice; for next steps on self-care, testing, and when to see a doctor, see the complete answer below.

In diverticulitis, stool may become hard and pellet-like or loose and watery, and can show mucus, bright red blood, or occasionally pencil-thin, ribbon-like shapes if the colon is narrowed. There are several factors to consider, especially other symptoms like lower left abdominal pain, fever, nausea, and bloating. Seek urgent care for severe or persistent pain, high fever, ongoing vomiting, significant rectal bleeding, or black tarry stool; see details below to understand more and decide next steps.

The quickest ways to poop now come from your body’s gastrocolic reflex after eating, amplified by triggers like coffee (even decaf), warm liquids, high-fat meals, and fiber; gentle movement, a squat-style position, and abdominal massage can also get things moving. For faster relief, options like magnesium citrate, glycerin suppositories, or enemas may work within minutes to hours, but use sparingly and avoid daily use. There are several factors to consider, including when to call a doctor for red flags like blood, black stools, severe pain, weight loss, or dehydration; see the complete details and next-step guidance below.

Coffee often makes you poop because it activates the gastrocolic reflex and increases colon contractions via caffeine and other coffee compounds, plus hormone releases like gastrin and CCK; warm fluid and stomach stretch add to the effect, and even decaf can trigger it. There are several factors to consider, including individual sensitivity, timing, and diet, as well as red flags that may warrant care. See below for practical tips to manage it and guidance on when to seek medical attention.

Burning with bowel movements is most often due to anal fissures or hemorrhoids, skin irritation or spicy foods, but infections, an abscess or fistula, inflammatory bowel disease, bile acid irritation after gallbladder removal, and pelvic floor disorders can also be causes; there are several factors to consider, and the key details on causes, triggers, and treatments are outlined below. Seek care urgently for severe pain, fever, heavy bleeding, or persistent symptoms, and review the step by step self care, medications, and procedure options below to decide your next steps with a clinician.

Most poop odor comes from gut bacteria digesting what you eat, but very foul smells are often tied to diet, sulfur rich foods, changes in transit, or short term infections. Persistent or new strong odors can also signal malabsorption such as lactose intolerance or celiac disease, pancreatic or biliary problems, medication effects, IBS, or IBD. There are several factors to consider, and warning signs like greasy pale stools, ongoing diarrhea, blood, fever, weight loss, or jaundice should prompt care, see the complete details and next step guidance below.

Black, tarry stool, called melena, can come from harmless causes like iron supplements, bismuth medicines, or dark foods, but it can also signal digested blood from bleeding in the upper digestive tract. There are several factors and warning signs to consider, including dizziness, weakness, severe abdominal pain, or vomiting blood that require urgent care; see the complete details below for how to tell the difference, what to do now, and when to seek medical help.

There are several factors to consider: dark green stool is often from foods or food dyes and faster gut transit, but it can also come from iron supplements or antibiotics, infections, bile acid malabsorption, IBS, celiac disease, or post-surgical changes. See below to understand more, including when to worry about persistent green diarrhea, blood or black stools, severe abdominal pain, high fever, dehydration, jaundice, and which steps, tests, and treatments can guide your next care decisions.

There are several factors to consider. Green stools with stomach pain most often come from rapid transit with diarrhea, foods or coloring, supplements like iron, or infections; they can also signal bile acid diarrhea or, less commonly, gallbladder or liver issues. Most cases improve with hydration, gentle diet changes, and OTC relief, but seek care for severe or persistent pain, high fever, blood in stool, dehydration, jaundice, or weight loss. See below for detailed causes, red flags, and next steps, including when testing or specific treatments are needed.

There are several factors to consider. Most often the color comes from bile moving through the gut too quickly, but hidden food dyes, iron or antibiotics, infections like gastroenteritis or bile acid diarrhea, and rarely gallbladder or liver issues can also do it; see below for details. Seek care if it lasts more than 3 days or with severe pain, fever, blood, or dehydration, and in the meantime hydrate, track your diet, consider a short course of probiotics, or use loperamide as directed; the next steps and tests your doctor might use are outlined below.

Green stool is usually harmless and most often comes from bile moving through the gut too quickly, green foods or dyes, or medications and supplements; sometimes infections or IBS play a role. There are several factors to consider, so see below to understand more. Watch for red flags like fever, severe pain, dehydration, blood or black stools, weight loss, jaundice, or symptoms lasting beyond 48 to 72 hours, and seek care if they occur or if the color persists despite diet changes. For complete details and next steps such as diet adjustments, hydration, probiotics, and when to call a doctor, see below.

Orange stool is usually caused by foods or dyes high in beta carotene, certain medications or supplements, or faster gut transit from diarrhea, but it can occasionally point to bile duct or gallbladder issues, liver disease, or malabsorption. There are several factors to consider; see below to understand more. If the color lasts longer than 48 to 72 hours or comes with pain, weight loss, persistent diarrhea, fever, dehydration, or jaundice, contact a clinician. See below for what to check in your recent diet and medications, specific red flags, and the diagnostic tests and treatments that may guide your next steps.