Calcimasi-Xt Tab
Tatvamasi Life Science - Tablet - 10 S
₹220
Prescription required
Prescription requiredTatvamasi Life ScienceAntibiotic
Rifamasi-400 mg Tablet
RIFAXIMIN-400MG
Rifamasi-400 mg Tablet is used for this medicine is used in the treatment of bacterial infection, gut infection, skin infection and dental infection.
Medically reviewed by Dr. Balaji Krishnan, MBBS · Updated September 2026
₹380₹38.00 per tablet
Licensed pharmacyPharmacist-verified orderDelivered across India
Key details
Salt: RIFAXIMIN-400MG
Available variants: tablet 400 mg 10`S
Best price: ₹380 (₹38.00 per tablet)
Prescription: Required
Manufacturer: TATVAMASI LIFE SCIENCE
Ordering notes
Standard delivery across India. No same-day delivery nationally.
Chennai express delivery is possible and chargeable. Learn more
Returns & refunds: orders can be cancelled before dispatch; after dispatch, returns depend on the item category. Read the full policy
Composition of Rifamasi-400 mg Tablet
Rifamasi-400 mg Tablet contains RIFAXIMIN-400MG. It belongs to the Antibacterial agent class of medicines.
Uses of Rifamasi-400 mg Tablet
- This medicine is used in the treatment of bacterial infection
- gut infection
- skin infection and dental infection.
Key benefits
- Targets infections that other antibiotic groups do not reach
How Rifamasi-400 mg Tablet works
Rifaximin kills or stops the growth of the bacteria causing your infection.
How to take Rifamasi-400 mg Tablet
Swallow the tablet whole with a glass of water. Do not chew, crush or break it unless your doctor has told you to. Take it with or just after food. Taking it at about the same time each day helps you remember. Follow the dose and the duration written on your prescription.
Take it exactly as your doctor prescribed. Do not change the dose or stop early on your own.
Missed dose and overdose
If you miss a dose
Take it as soon as you remember. If your next dose is almost due, skip the one you missed — never take two doses together to catch up.
If you take too much
An overdose of this medicine can cause vomiting, severe loose motions and nerve symptoms. Do not wait for symptoms to appear — go to the nearest emergency department and take the pack or strip with you.
Side effects of Rifamasi-400 mg Tablet
Most side effects of Rifamasi-400 mg are mild and settle as the body adjusts. Reported side effects include:
- Nausea
- Metallic taste
- Loose motions
- Stomach pain
- Headache
Stop the medicine and seek help immediately for a rash, swelling of the face or lips, wheezing or difficulty breathing. Tell your doctor about any side effect that persists or worries you.
Safety advice for Rifamasi-400 mg Tablet
| Pregnancy | Consult your doctor before using this in pregnancy. |
|---|---|
| Breastfeeding | Consult your doctor before using this while breastfeeding. |
| Alcohol | Do not drink alcohol while taking this medicine. |
| Driving | May cause drowsiness or affect your concentration. Do not drive until you know how it affects you. |
| Kidney | Consult your doctor if you have kidney disease. |
| Liver | Consult your doctor if you have liver disease. |
| Habit forming | No |
Warnings and precautions
Finish the whole course even after you feel better. Do not drink any alcohol while taking metronidazole, ornidazole or tinidazole, or for the period after the course that your doctor states — the combination causes severe flushing, vomiting and a racing heart. Report severe or watery loose motions during or after the course rather than treating them yourself. Tetracyclines stain developing teeth and are avoided in young children and in pregnancy. Antibiotics do not work against colds, flu or most sore throats, which are caused by viruses.
Do not take Rifamasi-400 mg if
Not for anyone with a known allergy to this medicine or to any ingredient in the pack.
Interactions with other medicines
Antacids, iron, zinc and calcium reduce the absorption of tetracyclines — separate them by a couple of hours. Tell your doctor if you take a blood thinner.
How to store Rifamasi-400 mg Tablet
Store below 30°C in the original pack, away from direct sunlight and moisture. Keep out of the reach of children.
Expert advice for Rifamasi-400 mg Tablet
Space the doses evenly and complete the course. Take tetracyclines with a full glass of water and stay upright for half an hour afterwards. Never use a leftover antibiotic, or someone else's, for a new illness.
Manufacturer and class
- Manufacturer:
- TATVAMASI LIFE SCIENCE
- Therapeutic class:
- Antibiotic
- Drug class:
- Antibacterial agent
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Rifamasi-400 mg Tablet FAQs
What is Rifamasi-400 mg Tablet used for?
Rifamasi-400 mg Tablet is commonly used for This medicine is used in the treatment of bacterial infection, gut infection, skin infection and dental infection. Always follow your doctor's advice, this information is for educational purposes and not a substitute for professional medical guidance.
What is the salt in Rifamasi-400 mg Tablet?
Rifamasi-400 mg Tablet contains RIFAXIMIN-400MG. If you are allergic to any of these active ingredients or excipients, do not take this medicine and speak to your doctor first.
How should I take Rifamasi-400 mg Tablet?
Swallow the tablet whole with a glass of water. Take it exactly as prescribed; do not change the dose or stop early without talking to your doctor.
How does Rifamasi-400 mg Tablet work?
Rifaximin kills or stops the growth of the bacteria causing your infection.
Is Rifamasi-400 mg Tablet a prescription medicine?
Yes. Rifamasi-400 mg Tablet is a prescription-only (Rx) medicine. Upload a valid prescription from a registered medical practitioner during checkout. We cannot dispense it without a valid Rx.
What are the common side effects of Rifamasi-400 mg Tablet?
The side effects reported most often with Rifamasi-400 mg are Nausea, Metallic taste, Loose motions, Stomach pain, Headache. Most are mild and settle as the body adjusts; tell your doctor if any of them persist or worry you, and stop the medicine and seek help at once for a rash, swelling of the face or lips, or difficulty breathing.
Can Rifamasi-400 mg Tablet be taken during pregnancy?
Consult your doctor before using this in pregnancy. Always tell your doctor if you are pregnant, planning a pregnancy or breastfeeding before starting Rifamasi-400 mg.
Can I drink alcohol while taking Rifamasi-400 mg Tablet?
Do not drink alcohol while taking this medicine.
What if I miss a dose of Rifamasi-400 mg Tablet?
Take it as soon as you remember.
Is Rifamasi-400 mg Tablet habit forming?
No. Rifamasi-400 mg Tablet is not known to be habit forming when taken as prescribed.
How much does Rifamasi-400 mg Tablet cost on PingMeDoc Pharmacy?
Rifamasi-400 mg Tablet starts at ₹380 on PingMeDoc Pharmacy. Available in tablet 400 mg 10`S. Final price is confirmed at checkout and may vary by variant and location.
Who manufactures Rifamasi-400 mg Tablet?
Rifamasi-400 mg Tablet is manufactured by TATVAMASI LIFE SCIENCE. PingMeDoc Pharmacy sources medicines only from licensed manufacturers and distributors.
How is Rifamasi-400 mg Tablet delivered?
Rifamasi-400 mg Tablet is delivered across India via our licensed pharmacy partners. Standard delivery timelines are confirmed at checkout. Chennai customers can opt for chargeable same-city express delivery.
Rifamasi-400 mg Tablet, Quick facts
- Salt
- RIFAXIMIN-400MG
- Form
- tablet
- Best price
- ₹380 (₹38.00 per tablet)
- Prescription
- Required (Rx)
- Brand
- TATVAMASI LIFE SCIENCE
- Manufacturer
- TATVAMASI LIFE SCIENCE
- Therapeutic class
- Antibiotic
- Drug class
- Antibacterial agent
- Habit forming
- No
- Variants
- tablet 400 mg 10`S
- Delivery
- Standard across India
References
The information on Rifamasi-400 mg Tablet is compiled from the manufacturer's prescribing information and the sources below, and is reviewed by a registered medical practitioner. It does not replace advice from your own doctor.
- PingMeDoc clinical monograph library — compiled from Indian package inserts, the Indian Pharmacopoeia
- CDSCO schedules and standard pharmacology references. Reviewed for patient readability. This is general information, not a substitute for your doctor's advice.
- Central Drugs Standard Control Organisation (CDSCO), Ministry of Health & Family Welfare, Government of India, approved drug and schedule listings.
- National List of Essential Medicines (NLEM) 2022, Government of India.
- Manufacturer's package insert / prescribing information for Rifamasi-400 mg Tablet.
- World Health Organization, ATC/DDD classification and Model Formulary for the active ingredient.
Next steps
Safety disclaimer
Product information is for general awareness and does not replace professional medical advice. Always follow a clinician's guidance and upload a valid prescription when required.