Metronidazole + Tetracycline is a combination antibiotic used to treat bacterial infections.
This combination is commonly used for:
• Helicobacter pylori infection: Helps eradicate the bacteria linked to stomach ulcers, often alongside other medicines.
• Periodontal infections: Treats susceptible bacterial infections affecting the gums and supporting structures of the teeth.
• Mixed bacterial infections: Treats infections caused by susceptible anaerobic and other bacteria.
Nausea
Vomiting
Diarrhoea
Abdominal pain
Skin rash
Metronidazole + Tetracycline works through two separate mechanisms that stop bacteria from growing and multiplying.
Metronidazole enters bacterial cells, where its breakdown products damage bacterial DNA and lead to bacterial cell death.
Tetracycline enters bacterial cells and binds to the 30S ribosomal subunit, blocking protein synthesis. This prevents a broad range of bacteria from growing and multiplying.
Together, the two antibiotics provide broader coverage against susceptible bacteria than either antibiotic when used alone.

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Metronidazole + Tetracycline is available for oral use (tablets and suspension).
This medication is meant for use by adults and children above the age of 8 years.
Metronidazole + Tetracycline is contraindicated in individuals with known hypersensitivity to either component of the formulation.
It is also contraindicated for individuals with liver or kidney disease.
This combination may interact with anticoagulants (such as warfarin), immunosuppressants (like cyclosporine and tacrolimus), anticonvulsants (including phenytoin and carbamazepine), and other antibiotics (such as penicillins and cephalosporins).
If you miss a dose of Metronidazole + Tetracycline, take it as soon as you remember. If it is almost time for your next dose, skip the missed dose and continue with your regular schedule. Do not take a double dose to make up for the missed one.
Most side effects are temporary and generally harmless and resolve when discontinuing this medicine. However, if you experience any severe side effects or worsening of any of the symptoms, please consult your doctor.
To manage nausea or abdominal discomfort, try taking your doses with or after meals.
If you are experiencing a metallic taste in your mouth, rinsing with a saltwater solution may help.
For oral thrush, maintaining good oral hygiene can be beneficial.
Metronidazole + Tetracycline may cause dizziness or weakness. You should avoid driving or operating heavy machinery until you know how this medication affects you.
Metronidazole + Tetracycline is generally not recommended during pregnancy or while breastfeeding. It is essential to consult a doctor before using this medicine if you are pregnant or planning to conceive.
Patients with existing liver or kidney conditions should use Metronidazole + Tetracycline with caution.
It is advisable for individuals with neurological disorders to consult their doctor due to potential neurological side effects.
Avoid alcohol consumption during treatment and for at least three days after completing therapy with Metronidazole + Tetracycline to prevent adverse reactions.
Limit exposure to sunlight and UV rays; wearing protective clothing and applying broad-spectrum sunscreen can help reduce the risk of photosensitivity reactions associated with tetracycline.
Maintain adequate hydration throughout the treatment period to help manage potential gastrointestinal side effects.
Engage in regular dental hygiene practices such as brushing and flossing to prevent the development of oral thrush, especially if using this medication for extended periods.
Frequently asked questions
Yes, some people can have an allergic reaction to Metronidazole + Tetracycline. Symptoms of an allergic reaction include rash, itching, swelling, severe dizziness, and trouble breathing. If you experience any of these symptoms, stop taking the medicine and consult your doctor immediately.
The half-life of Metronidazole is about 8 hours while Tetracycline's half-life is between 6 to 12 hours. This means that most of the medicine should be cleared from your system within 48 hours after your last dose. However, this can vary depending on your metabolism, overall health, age, and dosage.
Metronidazole + Tetracycline tablets may contain lactose. If you are lactose intolerant or have a similar condition, you should consult your doctor before using this medicine.
Yes, it can be used in elderly patients. However, as kidney function decreases with age, dosage might need to be adjusted accordingly. Always consult your doctor for the appropriate dosage.
No, Metronidazole + Tetracycline is not a painkiller. It is an antibiotic used to manage bacterial infections.
No direct link has been established between Metronidazole + Tetracycline and menstrual cycle changes. However, underlying conditions or stress related to illness can influence menstrual cycles. If you notice significant changes, consult your doctor.
Dizziness and weakness are common side effects of Metronidazole + Tetracycline, which could be interpreted as sleepiness. If you experience extreme sleepiness, consult your doctor.
Metronidazole + Tetracycline is mainly used for treating bacterial infections and falls under the group of antibiotics.
Metronidazole + Tetracycline in other salts
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