Clindamycin: Comprehensive Overview
Is It Right for You?
A complete guide to Clindamycin — what it treats, how it works, dosages, side effects, and when a clinician may prescribe it following an online consultation.
What Is Clindamycin?
Clindamycin is an orally and topically administered lincosamide antibiotic with broad activity against Gram-positive bacteria and anaerobic organisms. It is available generically and supplied as 75 mg, 150 mg, and 300 mg capsules for systemic use, as a 1% topical solution, gel, or lotion for dermatological use, and as a 2% vaginal cream for bacterial vaginosis. Clindamycin is notable for its excellent tissue penetration, achieving high concentrations in bone, abscesses, and soft tissues, making it particularly valuable for infections in these compartments where many antibiotics penetrate poorly. Its most clinically important risk is the development of Clostridioides difficile (C. diff) infection, which can cause life-threatening pseudomembranous colitis.
What Conditions Does Clindamycin Treat?
Clindamycin is prescribed for:
relief of sneezing, itchy and runny nose, nasal congestion, and itchy, watery eyes caused by seasonal allergens such as grass, tree, and weed pollens.
year-round nasal and eye allergy symptoms caused by persistent allergens such as house dust mites, pet dander, and mould spores.
While Clindamycin is effective for treating various infections, it should be used cautiously in patients with a history of gastrointestinal issues or hypersensitivity to the drug.
How Does Clindamycin Work?
Clindamycin inhibits bacterial protein synthesis by binding to the 50S ribosomal subunit, blocking peptide bond formation and preventing elongation of the growing peptide chain. This action primarily inhibits bacterial growth, although bactericidal effects can occur at higher concentrations.
Dosages & Administration
The correct dose depends on the type and severity of infection, age, weight, and kidney function. Always follow your clinician's instructions. The table below is for general reference only.
Administration Tips
Always follow your clinician's instructions. Clindamycin capsules should be swallowed whole with a full glass of water and the patient should remain upright for at least 30 minutes after ingestion to prevent severe oesophageal irritation.
Side Effects of Clindamycin
Clindamycin is generally well tolerated, but some side effects may occur.
- Diarrhoea
- Nausea
- Abdominal discomfort
- Clostridioides difficile infection — a serious risk associated with antibiotic use.
Patients should be informed about the risk of C. diff infection and the importance of reporting any significant gastrointestinal symptoms.
Drug Interactions
Clindamycin may interact with other medications, including neuromuscular blockers and macrolide antibiotics. Always inform your clinician about all medications you are taking.
As with other antibiotics, co-amoxiclav may theoretically reduce the efficacy of hormonal contraceptives. Use an additional contraceptive method during treatment and for 7 days after completing the course.
Important Warnings
Serious hypersensitivity reactions including anaphylaxis and severe skin reactions (Stevens-Johnson Syndrome) have been reported with azithromycin. Some reactions have recurred following re-exposure despite initial cessation. If a severe reaction occurs, do not re-take azithromycin without specialist allergy assessment.
Acute pulmonary reactions (lung inflammation) can occur, typically within the first week of treatment. Symptoms include sudden onset shortness of breath, cough, and fever. Chronic pulmonary reactions are rarer but can occur with prolonged use and may present with gradual breathlessness. Stop taking nitrofurantoin and seek immediate medical attention if you develop any breathing difficulties during treatment.
Speak to a Clinician About Treatment
Getting advice no longer means sitting in a waiting room. Through The GP Service, you can consult with a licensed clinician in minutes — from home, on your lunch break, or wherever works for you. If treatment is clinically appropriate, your clinician can issue a prescription during the consultation. A consultation does not guarantee a prescription.
The treatment you need, when you need it.
Clindamycin FAQs
Yes. A licensed clinician can assess your symptoms via a telehealth consultation and prescribe flucloxacillin if it is clinically appropriate. Prescriptions are typically sent to your preferred pharmacy the same day, often within minutes of your visit.
Take the missed dose as soon as you remember. If it is almost time for your next dose, skip the missed one and continue as normal. Never take a double dose to make up for a missed one. For malaria prophylaxis, consistency is especially important – if you miss a dose, take it as soon as you remember and continue daily.
Hyoscine butylbromide tablets are suitable for children aged 6 years and over. The dose for children aged 6 to 12 is typically 10 mg up to three times daily. It should not be used in children under 6 years. A clinician should assess and prescribe for paediatric use.