Warfarin 5 mg: uses, price & cheaper substitutes
Prescription required (Schedule H)
Common uses: Treating blood clots in the legs (DVT) and lungs (pulmonary embolism); Preventing stroke in atrial fibrillation (irregular heartbeat).
Listed MRPs range from ₹1.69 to ₹2.58 per tablet across 4 listings. Use only on a doctor's prescription.
Price comparison
| Brand | Manufacturer | Pack | MRP | ₹ / tablet | As on |
|---|---|---|---|---|---|
| Warfarin Tablets IP 5 mgJan Aushadhi | Jan Aushadhi (PMBJP) | 10 | ₹16.88 | ₹1.69 | 19 October 2026 |
| Cofarin 5 | East West Pharma | 10 | ₹21.66 | ₹2.17 | 19 October 2026 |
| Uniwarfin 5 | Torrent Pharmaceuticals Ltd | 10 | ₹22.58 | ₹2.26 | 19 October 2026 |
| Warf 5 | Cipla Ltd | 30 | ₹77.47 | ₹2.58 | 19 October 2026 |
MRPs as printed/listed on the date shown; actual price may vary.
Uses
- Treating blood clots in the legs (DVT) and lungs (pulmonary embolism).
- Preventing stroke in atrial fibrillation (irregular heartbeat).
- Preventing clots on mechanical heart valves.
- Preventing further clots in people with clotting disorders or after a mini-stroke (TIA).
How to take it
Take warfarin once a day at the same time, usually in the evening, with or without food. Your dose is set by regular INR blood tests – it may be a whole, half or different number of tablets on different days, so follow your anticoagulant record exactly. INR is checked every few days at the start and then every few weeks once stable; the dose is changed according to the result. Keep your diet steady (especially green leafy vegetables, which contain vitamin K), carry your anticoagulant card, and tell every doctor, dentist and chemist that you take warfarin. Do not stop unless your doctor tells you to. Get urgent help for any unusual bleeding, black stools, blood in urine or a severe headache.
Side effects
Common
- Bleeding more easily – gums, nosebleeds, bruising.
- Heavier periods.
- Mild nausea or stomach upset.
- Hair thinning (rare).
Serious
Stop and get medical help urgently if you notice any of these.
- Heavy or internal bleeding – blood in urine or stools, black tarry stools, vomiting blood – go to hospital.
- Sudden severe headache, confusion, weakness or slurred speech (possible brain bleed) – emergency.
- Painful purple skin patches in the first days (skin necrosis) – see a doctor urgently.
- Any head injury – get checked even if you feel fine.
Safety information
Alcohol
Avoid heavy or binge drinking. Alcohol changes how warfarin works and raises bleeding risk. An occasional small drink is usually acceptable if your INR is stable – ask your doctor.
Pregnancy
Warfarin can harm the unborn baby and is usually avoided in pregnancy, except in some heart-valve patients under specialist care. Tell your doctor immediately if you are pregnant or planning pregnancy. It is considered safe during breastfeeding.
Kidney problems
Tell your doctor about kidney disease; INR may need closer checking.
Liver problems
Liver disease increases warfarin's effect and bleeding risk; it may not be suitable or will need closer monitoring.
Children
Used in children only under a specialist with weight-based dosing and close INR monitoring.
Missed dose
Take it as soon as you remember the same day. If you only remember the next day, skip the missed dose – never double up. Note it in your record and tell your clinic if you miss doses often.
Interactions
- Painkillers like aspirin, ibuprofen, diclofenac (NSAIDs) – much higher bleeding risk; use paracetamol instead.
- Antibiotics (ciprofloxacin, metronidazole, azithromycin, co-trimoxazole) and antifungals (fluconazole) – raise INR; get it rechecked after a course.
- Amiodarone, statins, some antidepressants and acidity medicines (omeprazole) – can change INR.
- Rifampicin, carbamazepine, phenytoin – lower warfarin's effect.
- Vitamin K supplements, multivitamins, large amounts of green leafy vegetables, cranberry juice, grapefruit juice – affect INR; keep intake steady.
- Herbal products – St John's wort, ginkgo, garlic and fish-oil supplements; tell your doctor about any you take.
Frequently asked questions
What is Warf 5 used for?
Warf 5 is warfarin 5 mg, an oral blood thinner. It is used to treat and prevent blood clots in the legs and lungs, to prevent stroke in atrial fibrillation, and to protect mechanical heart valves.
What is INR and why do I need it checked?
INR measures how long your blood takes to clot. Warfarin's dose is adjusted to keep INR in a target range (often 2 to 3). Too low means clot risk; too high means bleeding risk. Tests are frequent at first and then every few weeks.
Can I take Warf 5 with alcohol?
Avoid heavy drinking and binges – they can push your INR up and cause bleeding. If your doctor agrees, a small, regular amount is less risky than occasional heavy drinking.
What foods should I avoid with warfarin?
You do not have to avoid green vegetables, but keep your intake of vitamin K foods (spinach, methi, broccoli, cabbage) steady from week to week. Avoid cranberry and grapefruit juice and sudden big changes in diet.
Can I take Dolo 650 or Combiflam with Warf 5?
Paracetamol (Dolo) in normal doses is the safest painkiller with warfarin. Combiflam contains ibuprofen, which raises bleeding risk – avoid it and other NSAIDs unless your doctor approves.
Warfarin vs Eliquis (apixaban) – what is the difference?
Both prevent clots. Warfarin needs regular INR tests and is affected by diet, but it is low cost and still the choice for mechanical heart valves. Apixaban and rivaroxaban need no INR monitoring but cost more and are not used for mechanical valves.
I missed my warfarin dose yesterday. What should I do?
Skip it and take today's dose as usual – never take two doses together. Make a note and inform your anticoagulation clinic if you miss doses often.
Do I need to stop Warf 5 before surgery or a tooth extraction?
Tell the surgeon or dentist well in advance. For many minor dental procedures warfarin is continued; for surgery it is often stopped a few days before, sometimes with a heparin injection as bridge. Never stop it on your own.
Is Warf 5 safe in pregnancy?
Warfarin can cause birth defects and is usually replaced with heparin injections in pregnancy. Tell your doctor the moment you suspect pregnancy. It is safe while breastfeeding.
Sources
- NHS – Warfarin (19 October 2026)
- NPPA Pharma Sahi Daam (ceiling prices) (19 October 2026)
- PMBI Jan Aushadhi Product & MRP List (19 October 2026)
Medyzen Editorial Team · Last updated
This page is general information, not medical advice. Do not start, stop or change a medicine without asking a doctor or pharmacist. Terms