Tetracycline
Generic Name: Tetracycline
Uses & Medical Indications
Treatment of various bacterial infections, acne
Acne vulgaris, Respiratory tract infections, Syphilis, Chlamydia
Work Mechanism & Pharmacology
Patient Overview of Work Mechanism
Tetracycline halts bacterial reproduction by blocking bacterial cells from manufacturing the essential proteins they require to survive.
Clinical Mechanism of Action (MoA)
Broad-spectrum polyketide antibiotic that binds reversibly to the bacterial 30S ribosomal subunit, preventing the docking of charged aminoacyl-tRNA to the mRNA-ribosome complex and inhibiting bacterial translation.
Dosage & Administration Guidelines
500 mg twice daily or 250 mg four times daily
Avoid in children under 8 years
Use lower end of dosage range
2000 mg/day
Reduce dose and/or increase interval
Use with caution
Side Effects & Safety Warnings
Nausea, vomiting, diarrhea, photosensitivity
Esophageal ulceration, hepatotoxicity, intracranial hypertension
Hypersensitivity to tetracyclines
Tooth discoloration in children <8 yrs, photosensitivity
Interactions (Drugs, Food & Alcohol)
Antacids, iron supplements, oral contraceptives, penicillin
Dairy products decrease absorption
May decrease efficacy
Pregnancy & Breastfeeding Safety
Avoid; can cause fetal harm (tooth discoloration, bone growth suppression)
Excreted in milk, use not recommended
Patient Counseling & Practical Advice
Take on an empty stomach with a full glass of water. Avoid dairy, antacids, and prolonged sun exposure.
Take as soon as remembered; skip if almost time for next dose.
Renal, hepatic, and hematopoietic function in long-term therapy
When to Seek Urgent Medical Attention
Seek immediate emergency medical care (call emergency services or proceed to the nearest emergency department) if you experience signs of a life-threatening allergic reaction (anaphylaxis: facial, lip, tongue, or throat swelling causing airway obstruction), severe cutaneous blistering with skin peeling, sudden intense chest pain, or symptoms of overdose.
Content for Tetracycline was synthesized from standardized public health monographs, official pharmacopoeias, and health authorities:
- Central Drugs Standard Control Organization (CDSCO) — National List of Essential Medicines
- World Health Organization (WHO) — Model List of Essential Medicines
- Indian Pharmacopoeia Commission (IPC) — Indian Pharmacopoeia Drug Monographs
- National Health Service (NHS) — Medicines A to Z Clinical Guidelines
The information provided on this website is for educational purposes only and is not intended as a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of a qualified healthcare provider with any questions you may have regarding a medical condition.