Rtetra 500mg Tablet

Written By Dr. Lipika Khurana, PGDHHM, BDS

Reviewed By Dr. Rajeev Sharma, MBA, MBBS

Last updated on 25 Nov 2025 | 03:05 PM (IST)

Rtetra 500mg Tablet is an antibiotic medicine used to treat bacterial infections in your body. It is effective in some infections of the lungs, urinary tract, eyes, and others. It kills bacteria, which helps to improve your symptoms and cure the infection.

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General Information

Contains

Tetracycline (500mg)

Marketer

Wanbury Ltd

Storage

Store below 30°C

The content is shown in English

Product introduction

Rtetra 500mg Tablet is also used to treat many sexually transmitted diseases. It should be taken on an empty stomach. You should take it regularly at evenly spaced intervals as per the schedule prescribed by your doctor. Taking it at the same time every day will help you to remember to take it. The dose of Rtetra 500mg Tablet will depend on what you are being treated for, but you should always complete a full course of this antibiotic as prescribed by your doctor. Do not stop taking it until you have finished, even when you feel better. If you stop taking it early, some bacteria may survive and the infection may come back.

Commonly seen side effects with Rtetra 500mg Tablet include vomiting, nausea, diarrhea, and skin reaction on exposure to sunlight (photosensitivity). Avoid excessive sun exposure and use sunscreen and protective clothing when outdoors. These are usually temporary and subside with the completion of treatment. Consult your doctor if you find these side effects bother or worry you.

Inform your doctor if you have any previous history of allergy to any antibiotic or liver or kidney problems before taking this medicine. You should also let your healthcare team know all other medicines you are taking as they may affect, or be affected by this medicine. Pregnant or breastfeeding women should consult their doctor before using Rtetra 500mg Tablet.

Uses of Rtetra Tablet

Bacterial infections

Benefits of Rtetra Tablet

Bacterial infections
Rtetra 500mg Tablet is an antibiotic medicine that can be used to treat many different infections caused by bacteria. It stops the growth of the bacteria causing the infection and clears the infection. Take it for as long as prescribed by the doctor and avoid skipping doses. This will make sure that all bacteria are killed and they do not become resistant.

How to use Rtetra Tablet

Take this medicine in the dose and duration as advised by your doctor. Swallow it as a whole. Do not chew, crush or break it. Rtetra 500mg Tablet is to be taken on an empty stomach.

How Rtetra Tablet works

Rtetra 500mg Tablet is an antibiotic that works by stopping the growth of bacteria that cause infections. It does this by blocking the bacteria’s ability to make proteins, which are essential for their survival and reproduction. Without these proteins, the bacteria can't grow or spread, and the body’s immune system can then fight off the infection more effectively. This action helps treat a wide range of bacterial infections, including those affecting the skin, respiratory tract, and urinary system.

Quick tips

Take Rtetra 500mg Tablet 1 hour before or two hours after food.
Do not take antacids or medicines containing zinc or iron at least 2 hours before or 6 hours after taking Rtetra 500mg Tablet.
Diarrhea may occur as a side effect but should stop when your course is complete. Inform your doctor if it doesn't stop or if you find blood in your stools.
Stick to simple meals, avoid rich or spicy food and drink plenty of water while taking this medicine.
Discontinue Rtetra 500mg Tablet and inform your doctor immediately if you get a rash, itchy skin, swelling of face and mouth, or have difficulty in breathing.
Rtetra 500mg Tablet may cause dizziness. Don't drive or do anything that requires mental focus until you know how Rtetra 500mg Tablet affects you.
Your doctor has prescribed Rtetra 500mg Tablet to cure your infection and improve symptoms.
It should be taken on an empty stomach.
Do not skip any doses and finish the full course of treatment even if you feel better. Stopping it early may make the infection to come back and harder to treat.
It may cause dizziness. Don't drive or do anything that requires mental focus until you know how Rtetra 500mg Tablet affects you.
Diarrhea may occur as a side effect but should stop when your course is complete. Inform your doctor if it doesn't stop or if you find blood in your stools.
It can lower the efficacy of birth control pills. Use an alternative method of contraception ( condom, diaphragm, spermicide) while taking this medication.
Inform your doctor if you are pregnant, planning to conceive or breastfeeding.
Do not take antacids or medicines containing zinc or iron at least 2 hours before or 6 hours after taking Rtetra 500mg Tablet.
Discontinue Rtetra 500mg Tablet and inform your doctor immediately if you get a rash, itchy skin, swelling of face and mouth, or have difficulty in breathing.

Safety advice

Alcohol

SAFE

Consuming alcohol with Rtetra 500mg Tablet does not usually cause any harmful side effects.

Pregnancy

CONSULT YOUR DOCTOR

Rtetra 500mg Tablet is not recommended during pregnancy as there is positive evidence of fetal risk based on animal studies. However, it may still be prescribed by a doctor in situations where the benefits outweigh the risks.

Breast feeding

SAFE IF PRESCRIBED

Rtetra 500mg Tablet may be safe to use during breastfeeding. Animal studies have shown low or no adverse effects to the developing baby; however, there are limited human studies.
Use of Rtetra 500mg Tablet is not harmful in short-term because milk levels are low. Prolonged or repeated use may cause staining of babies dental enamel or bone deposition of Rtetra 500mg Tablet.

Driving

SAFE

Rtetra 500mg Tablet does not usually affect your ability to drive.

Kidney

CAUTION

Rtetra 500mg Tablet should be used with caution in patients with kidney disease. Dose adjustment may be needed.
Use of Rtetra 500mg Tablet is not recommended in patients with severe kidney disease.

Liver

CAUTION

Rtetra 500mg Tablet should be used with caution in patients with liver disease. Dose adjustment may be needed.

Interaction with drugs

Taking Rtetra with any of the following medicines can modify the effect of either of them and cause some undesirable side effects

Life-threatening

Tretinoin (Oral Route)

Do not consume Tretinoin with Tetracycline.

Severe

Isotretinoin (Oral Route)

Do not consume Isotretinoin with Tetracycline.

Severe

Cholera Vaccine (Inactivated) (Oral Route)

Do not consume Cholera Vaccine (Inactivated) two weeks before and at least 10 days after consuming Tetracycline. Please consult your doctor. Tetracycline may reduce the efficacy of Cholera Vaccine (Inactivated).

Severe

Acitretin (Oral Route)

Do not consume Acitretin with Tetracycline.

Severe

Phenindione (Oral Route)

If concurrent use is essential, watch out for bleeding and consult your doctor immediately. They may monitor your treatment and adjust the doses as per the observations. Tetracycline may increase the effect of Phenindione.

Frequently asked questions

Can I drink milk while taking Rtetra 500mg Tablet?

No, you should avoid using milk and milk products while taking Rtetra 500mg Tablet. Consuming dairy products along with Rtetra 500mg Tablet can decrease its absorption from the stomach, which may lead to inadequate affect of this medicine.

How long after taking Rtetra 500mg Tablet can I eat?

It is best to wait for 2 hours after consuming Rtetra 500mg Tablet. Consuming food along with Rtetra 500mg Tablet may decrease its absorption from the stomach.

Can I take Rtetra 500mg Tablet with food if its causing stomach upset?

Yes, you can take Rtetra 500mg Tablet with food if its causing you stomach upset. However, avoid consuming milk and milk products 1 hr before and 2 hr after taking this medicine.

How long does Rtetra 500mg Tablet takes to work?

Usually, Rtetra 500mg Tablet starts working soon after taking it. However, it may take some days to kill all the harmful bacteria and make you feel better.

Can the use of Rtetra 500mg Tablet cause diarrhea?

Yes, the use of Rtetra 500mg Tablet can cause diarrhea. It is an antibiotic which kills the harmful bacteria. However, it also affects the helpful bacteria in your stomach or intestine and causes diarrhea. If diarrhea persists, talk to your doctor about it.

What is the dose of Rtetra 500mg Tablet?

The typical dose of Rtetra 500mg Tablet is 500 mg by mouth twice daily or 250 mg by mouth four times daily. You might need a higher dose for more severe infections or for infections that don't resolve with smaller doses. Always follow your doctor’s instructions while taking Rtetra 500mg Tablet and do not self-medicate.

Can I take Rtetra 500mg Tablet for treating flu or common cold?

Rtetra 500mg Tablet is an antibiotic used to treat bacterial infections and is not effective against viral infections such as the common cold, or flu. It is important to only use antibiotics when they are prescribed by a healthcare provider for a bacterial infection.<br>

Can I lie down after immediately taking Rtetra 500mg Tablet?

Lying down right after taking Rtetra 500mg Tablet can cause esophagus (food pipe) irritation, so don't take it immediately before going to bed.

Can I take oral contraceptives with Rtetra 500mg Tablet?

If you are taking any oral contraceptive pill at the same time as Rtetra 500mg Tablet, the effectiveness of the pill can be reduced if you have a bout of being sick (vomiting) which lasts for more than 24 hours. In such a case, ask your doctor for additional contraceptive measures.<br>

Can Rtetra 500mg Tablet be used to treat dental infections?

Rtetra 500mg Tablet may be used to treat dental infections caused by bacteria. However, it is important to consult with your dentist or healthcare provider to determine the most appropriate treatment for your specific condition. In some cases, other antibiotics or dental procedures may be necessary to fully treat a dental infection.

Fact Box

Chemical Class

Tetracyclines

Habit Forming

Therapeutic Class

ANTI INFECTIVES

Action Class

Bacterial Protein Synthesis Inhibitors- Tetracyclines

Related lab tests

Complete Blood Count

Peripheral Smear Examination

References

MacDougall C, Chambers HF. Protein Synthesis Inhibitors and Miscellaneous Antibacterial Agents. In: Brunton LL, Chabner BA, Knollmann BC, editors. Goodman & Gilman’s: The Pharmacological Basis of Therapeutics. 12th ed. New York, New York: McGraw-Hill Medical; 2011. pp. 1521-26.
Chambers HF, Deck DH. Tetracyclines, Macrolides, Clindamycin, Chloramphenicol, Streptogramins, & Oxazolidiones. In: Katzung BG, Masters SB, Trevor AJ, editors. Basic and Clinical Pharmacology. 11th ed. New Delhi, India: Tata McGraw Hill Education Private Limited; 2009. p. 796-99.
Briggs GG, Freeman RK, editors. A Reference Guide to Fetal and Neonatal Risk: Drugs in Pregnancy and Lactation. 10th ed. Philadelphia, PA: Wolters Kluwer Health; 2015. pp. 1339-142.
Chaves RG, Lamounier JA. Breastfeeding and maternal medications. J Pediatr (Rio J). 2004;80(5 Suppl):S189-98. [Accessed 29 Mar. 2019] (online) Available from:
Central Drugs Standard Control Organisation (CDSCO). [Accessed 28 Mar. 2019] (online) Available from:

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Tata 1mg's sole intention is to ensure that its consumers get information that is expert-reviewed, accurate and trustworthy. However, the information contained herein should NOT be used as a substitute for the advice of a qualified physician. The information provided here is for informational purposes only. This may not cover everything about particular health conditions, lab tests, medicines, all possible side effects, drug interactions, warnings, alerts, etc. Please consult your doctor and discuss all your queries related to any disease or medicine. We intend to support, not replace, the doctor-patient relationship.

Marketer details

Name: Wanbury Ltd
Address: Wanbury Limited , BSEL Techpark, 'B' Wing, 10th Floor, Sector 30-A, Opp. Vashi Railway Station, Vashi, Navi Mumbai - 400703, India.

Vendor Details

Country of origin: India

Lab tests offered by us

Why we need a prescription?

Rtetra 500mg Tablet

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General Information

Contains

Marketer

Storage

Product introduction

Uses of Rtetra Tablet

Benefits of Rtetra Tablet

How to use Rtetra Tablet

How Rtetra Tablet works

Quick tips

Safety advice

Alcohol

Pregnancy

Breast feeding

Driving

Kidney

Liver

Interaction with drugs

Tretinoin (Oral Route)

Isotretinoin (Oral Route)

Cholera Vaccine (Inactivated) (Oral Route)

Acitretin (Oral Route)

Phenindione (Oral Route)

Frequently asked questions

Can I drink milk while taking Rtetra 500mg Tablet?

How long after taking Rtetra 500mg Tablet can I eat?

Can I take Rtetra 500mg Tablet with food if its causing stomach upset?

How long does Rtetra 500mg Tablet takes to work?

Can the use of Rtetra 500mg Tablet cause diarrhea?

What is the dose of Rtetra 500mg Tablet?

Can I take Rtetra 500mg Tablet for treating flu or common cold?

Can I lie down after immediately taking Rtetra 500mg Tablet?

Can I take oral contraceptives with Rtetra 500mg Tablet?

Can Rtetra 500mg Tablet be used to treat dental infections?

Fact Box

Chemical Class

Habit Forming

Therapeutic Class

Action Class

Related lab tests

Complete Blood Count

Peripheral Smear Examination

References

Want to know more

Have issue with the content

Disclaimer

Marketer details

Vendor Details

Lab tests offered by us

Related/Popular tests