What infections does clindamycin treat?

What is clindamycin used for?

Clindamycin is a prescription antibiotic that fights a broad range of bacterial infections. It works by stopping bacteria from making essential proteins, which keeps them from growing and helps your body clear the infection. Below is a breakdown of the types of infections clindamycin commonly treats, how it’s given, important precautions, and when to talk with a doctor.

Infections Treated by Clindamycin

Clindamycin is active against many Gram-positive cocci (like staph and strep) and various anaerobic bacteria (organisms that thrive where oxygen is scarce). Depending on the form—capsules, liquid, injection, topical gel or lotion, or vaginal suppository—it can treat:

• Skin and Soft Tissue Infections
– Cellulitis (skin inflammation often with redness, warmth and swelling)
– Impetigo (superficial skin infection)
– Abscesses (pockets of pus)
– Wound infections (including certain surgical sites)

• Bone and Joint Infections
– Osteomyelitis (bone infection)
– Septic arthritis (infected joint)

• Intra-Abdominal Infections
– Peritonitis (infection of the abdominal lining)
– Abscesses inside the belly
– Bacterial overgrowth or infections after surgery

• Pelvic and Gynecological Infections
– Endometritis (infection of the uterine lining after childbirth)
– Pelvic inflammatory disease (PID) when combined with other antibiotics
– Certain cases of bacterial vaginosis (using vaginal suppositories)

• Respiratory Tract Infections
– Pneumonia (lung infection), including community-acquired types
– Lung abscesses
– Bronchitis and other lower respiratory infections when anaerobes are suspected

• Dental and Oral Infections
– Periodontal (gum) infections
– Tooth abscesses
– Prevention of infection before certain dental procedures in people allergic to penicillin

• Bloodstream Infections (Septicemia)
Clindamycin may be part of combination therapy to clear bacteria from the blood.

• Other Uses
– Acne vulgaris (topical clindamycin gel or lotion)
– Malaria (in combination with quinine for certain strains)
– Prophylaxis (prevention) of endocarditis in high-risk dental procedures if penicillin can’t be used

Forms and Dosing

• Oral capsules or liquid: Commonly prescribed for mild to moderate infections.
• Intravenous (IV) infusion: Used in the hospital for serious or life-threatening infections.
• Topical gel or lotion: Applied to the skin for acne or minor skin infections.
• Vaginal suppositories: Used for bacterial vaginosis.

Your doctor will choose the form and dose based on:
– The type and severity of infection
– Your age, weight and kidney function
– Any other medical conditions or medications

Common side effects

Most people handle clindamycin well, but you may experience:

• Gastrointestinal upset
– Diarrhea (can be mild or, rarely, severe)
– Nausea or vomiting
– Abdominal pain

• Skin reactions
– Rash, itching or hives

• Yeast infections
– Overgrowth of fungi in the mouth or vagina

Less common but serious:

• Clostridioides difficile–associated diarrhea (often called C. diff colitis).
– Symptoms: severe, persistent diarrhea; abdominal cramps; fever.
– If you develop these symptoms, stop clindamycin and seek medical help immediately.

Precautions and Contraindications

Before taking clindamycin:

• Tell your doctor about:
– Any allergies (especially to lincomycin or lincosamide antibiotics)
– Current medications (including over-the-counter, herbal and supplements)
– History of gastrointestinal diseases, especially colitis
– Pregnancy or breastfeeding plans

• Use with caution if you have:
– Liver or kidney disease (doses may need adjustment)
– A history of antibiotic-associated diarrhea

Antibiotic Resistance

Using antibiotics when they’re not needed or not finishing a full course can contribute to resistant bacteria. Always take clindamycin exactly as prescribed, even if you feel better before it’s finished.

When to Talk to a Doctor

Clindamycin can treat many serious infections, but antibiotics aren’t without risk. Always seek medical advice if you experience:

• Signs of a severe allergic reaction
– Difficulty breathing, swelling of the face or throat, hives

• Severe or bloody diarrhea
• High fever or new symptoms while on treatment
• No improvement within 48–72 hours of starting therapy
• Any symptom that feels life-threatening or serious

You might also consider doing a free, online symptom check, using the doctor approved Ubie Symptom Checker.

It’s important to remember that this information is for general guidance. Speak to a doctor about anything that could be life threatening or serious. Your healthcare provider can confirm whether clindamycin is right for your specific condition, adjust the dose as needed, and monitor you for side effects.

Bottom Line

What is clindamycin used for? It’s a versatile antibiotic against many skin, bone, abdominal, pelvic, respiratory, dental, and bloodstream infections. It comes in oral, injectable, topical, and vaginal forms. While effective, clindamycin carries risks—most notably antibiotic-associated diarrhea—so use it exactly as your doctor directs. If you have new or worsening symptoms, severe side effects, or any concerns, speak with your healthcare provider right away. And remember: for a quick, free, doctor-approved check of your symptoms, try the Ubie Symptom Checker.