Warfarin and Green Tea: Moderate risk interaction. Can be taken together with caution. Green tea has Vitamin K. Excess can reduce Warfarin effect.

Drug InteractionModerate RiskAI-VerifiedCategory · food

Can I take Warfarin with Green Tea?

Warfarin and Green Tea can generally be taken together with precautions. Green tea has Vitamin K. Excess can reduce Warfarin effect.

Brand names: Warfarin - Coumadin, Jantoven (US), Marevan (UK, Australia)

WarfarinMEDICINE AGreen TeaMEDICINE B
Can be combined
With medical supervision

Quick verdict

Yes - Warfarin and Green Tea can usually be combined.

What to do: Consistent moderate green tea intake is okay. Don't suddenly increase.

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How They Interact

The science in one sentence

Green tea has Vitamin K. Excess can reduce Warfarin effect.

How to Use Smartly

Simple rules that protect you

  • Consistent moderate green tea intake is okay. Don't suddenly increase.
  • Always tell your doctor/pharmacist about ALL medicines you take - prescriptions, OTC, supplements, and herbal products.
  • Keep a current medicine list with doses and timings - photo on your phone is enough.
  • Read medicine labels for timing (with food / empty stomach) before combining.
  • Even 'safe' combinations need monitoring - note any unusual symptoms in the first few days.
  • Use GoDavaii AI to double-check before adding any new medicine, supplement, or desi ilaaj.
AI-Verified · Cross-checked against 93,000+ interaction database

Not medical advice

Individual responses vary based on dose, timing, health conditions, and other medicines. Always consult your doctor or pharmacist before combining medicines. For emergencies, call 112.

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