Warfarin: how to take it safely
Marevan, Warfarin
Reviewed by Pharm. Abeeb Junior
What it is for
A blood thinner that prevents and treats blood clots.
How to take it
- Prescription medicine: take it exactly as your doctor or pharmacist told you.
- Swallow with water.
- Have your blood tests (INR) when asked. Take the exact dose your clinic gives you.
When to take it
Take it at the same time each evening.
Take it with
With or without food, but keep your diet steady.
What to avoid
- Big changes in green leafy vegetables, which contain vitamin K.
- Alcohol binges.
- Aspirin, ibuprofen and other medicines unless your doctor approves.
- Herbal products and new medicines without checking.
- Contact sports and risk of injury.
Possible side effects
Bruising, nosebleeds, bleeding gums.
Get help if
Black stools, vomiting blood, a bad fall or blow to the head, heavy bleeding or severe headache: get emergency help.
This is general information, not personal medical advice. Always follow your doctor's or pharmacist's instructions and read the leaflet that comes with your medicine. Medicines and doses can differ between products and people.