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Tetracycline Hydrochloride: Brands, Price & Uses in Bangladesh
Tetracycline Hydrochloride is a broad-spectrum tetracycline-class antibiotic used to treat a range of bacterial and certain non-bacterial infections.
About Tetracycline Hydrochloride
Indications of Tetracycline Hydrochloride
Tetracycline Hydrochloride is a broad-spectrum tetracycline-class antibiotic used to treat a range of bacterial and certain non-bacterial infections. Because bacterial resistance to tetracyclines is common, it should be used only when the infecting organism is proven or strongly suspected to be susceptible.
Established / FDA-labeled uses
- Infections caused by susceptible strains of Gram-positive and Gram-negative organisms, including respiratory tract infections, skin and soft tissue infections, and urinary tract infections.
- Rocky Mountain spotted fever, typhus fever and other rickettsioses.
- Chlamydial infections, including psittacosis, lymphogranuloma venereum, and uncomplicated urethral, endocervical, or rectal infections.
- Relapsing fever (Borrelia), brucellosis (usually combined with an aminoglycoside), tularemia, cholera, and granuloma inguinale.
- Syphilis and gonorrhea in patients who are allergic to penicillin.
Guideline-supported / adjunct uses
- Moderate to severe inflammatory acne vulgaris, as an adjunct to topical therapy.
- As part of multidrug combination regimens for Helicobacter pylori eradication in peptic ulcer disease.
- Adjunctive therapy in intestinal amoebiasis (used together with an amoebicide).
Tetracycline Hydrochloride is not effective against viral infections and inappropriate use increases the risk of drug-resistant bacteria.
Dosage & Administration of Tetracycline Hydrochloride
Adult Dosage (by indication)
| Indication | Typical Adult Dose |
|---|---|
| General susceptible bacterial infections | 250-500 mg orally every 6 hours (up to 500 mg four times daily for severe infections) |
| Uncomplicated gonorrhea | 500 mg four times daily for at least 7 days (per treating physician's regimen) |
| Syphilis (penicillin-allergic patients) | 500 mg four times daily for 15-30 days as directed by physician |
| Brucellosis | 500 mg four times daily for 3 weeks, combined with streptomycin/an aminoglycoside |
| Moderate to severe acne (adjunct) | 250-500 mg once or twice daily, tapered as directed |
| H. pylori eradication | 500 mg four times daily as part of a combination regimen, per treating physician |
Pediatric Dosage
Only for children over 8 years of age (see Pediatric Use and Contraindications): 25-50 mg/kg/day in 4 divided doses, not to exceed the adult dose.
Administration Instructions
- Take Tetracycline Hydrochloride on an empty stomach, at least 1 hour before or 2 hours after meals, for optimal absorption.
- Swallow capsules/tablets with a full glass of water, and remain upright (sitting or standing) for at least 30 minutes after dosing to reduce the risk of esophageal irritation or ulceration.
- Do not take with milk or other dairy products, antacids, or supplements containing calcium, iron, zinc, or magnesium; separate these by at least 2 hours before or after the dose, as they significantly reduce drug absorption (chelation).
- Take Tetracycline Hydrochloride exactly as prescribed by your physician; do not stop, extend, skip doses, or share this medicine with others without medical advice, and complete the full prescribed course even if symptoms improve early.
Side Effects of Tetracycline Hydrochloride
Common Side Effects
- Nausea, vomiting, diarrhea, abdominal discomfort, and loss of appetite
- Photosensitivity (exaggerated sunburn reaction) with sun or UV light exposure
- Glossitis, stomatitis, and dysphagia
Less Common but Serious Effects
- Esophageal irritation or ulceration (see Precautions and Warnings for prevention)
- Clostridioides difficile-associated diarrhea/colitis, ranging from mild to severe
- Intracranial hypertension (pseudotumor cerebri) presenting as headache and visual disturbance
- Hypersensitivity reactions: rash, urticaria, angioedema, and rarely anaphylaxis or serum sickness-like reactions
- Hematologic effects: hemolytic anemia, thrombocytopenia, neutropenia, eosinophilia
- Hepatotoxicity (rare, more often with high intravenous doses)
- Permanent tooth discoloration and enamel hypoplasia when used in young children or during pregnancy (see Contraindications)
Contraindications of Tetracycline Hydrochloride
Tetracycline Hydrochloride is contraindicated in:
- Patients with known hypersensitivity to Tetracycline Hydrochloride or any other tetracycline-class antibiotic.
- Pregnancy (all trimesters), due to well-established risk of permanent fetal tooth discoloration and inhibition of bone growth.
- Children under 8 years of age, due to the well-established risk of permanent tooth discoloration, enamel hypoplasia, and effects on bone growth — except in specific special circumstances (e.g., anthrax post-exposure prophylaxis) when directed by a physician who has weighed the risks and benefits.
Frequently Asked Questions about Tetracycline Hydrochloride
What is Tetracycline Hydrochloride used for?
Tetracycline Hydrochloride is a broad-spectrum antibiotic used to treat various bacterial infections such as respiratory and urinary tract infections, chlamydial infections, rickettsial infections (e.g., Rocky Mountain spotted fever), and as an adjunct for moderate to severe acne, among other susceptible bacterial infections. It should only be used for infections confirmed or strongly suspected to be caused by susceptible bacteria.
Can I take Tetracycline Hydrochloride with milk or dairy products?
No. Dairy products, as well as antacids and supplements containing calcium, iron, zinc, or magnesium, bind to Tetracycline Hydrochloride in the gut and significantly reduce its absorption, making the medicine less effective. Take Tetracycline Hydrochloride at least 1 hour before or 2 hours after such foods or products, separated by at least 2 hours from any mineral supplements or antacids.
Is Tetracycline Hydrochloride safe during pregnancy?
No. Tetracycline Hydrochloride is contraindicated during pregnancy because it crosses the placenta and can cause permanent discoloration of the baby's teeth, enamel defects, and inhibition of bone growth. It should not be used during pregnancy unless a physician determines it is absolutely necessary and no safer alternative is available.
Can children take Tetracycline Hydrochloride?
Tetracycline Hydrochloride is contraindicated in children under 8 years of age because it can cause permanent tooth discoloration and affect bone growth. It may only be used in this age group in specific circumstances directed by a physician. In children over 8 years, it may be used at a weight-based dose determined by the physician.
What precautions should I take while on Tetracycline Hydrochloride?
Take Tetracycline Hydrochloride exactly as prescribed and complete the full course even if you feel better. Take it on an empty stomach with a full glass of water, remain upright for at least 30 minutes afterward, avoid dairy products/antacids/mineral supplements within 2 hours of dosing, and use sun protection since Tetracycline Hydrochloride can cause photosensitivity (exaggerated sunburn).
What should I do if I miss a dose or accidentally take too much Tetracycline Hydrochloride?
If you miss a dose, take it as soon as you remember unless it is almost time for the next dose — do not double up. If you suspect you or someone else has taken too much Tetracycline Hydrochloride, stop the medication and seek immediate medical attention or contact a poison control center right away, as overdose requires prompt medical evaluation.
Disclaimer
The information provided is accurate to the best of our knowledge, but it does not replace professional medical advice. We cannot guarantee its completeness or accuracy, and the absence of specific information about a drug should not be taken as an endorsement. We are not responsible for any consequences arising from this information, so please consult a healthcare professional for any concerns or questions.