Hi,
I take a 500 mg Vit C with my Coumadin every night. I also take a Centrim Multi vit every morning.
The key here is "Every" Remember consitancy is the key with taking Coumadin. If you take something that has Vit K, or something that may effect the INR, as long as what ever it isyou take, is taken regulary, then your Coumadin can be adjusted to compensate for it.
I take 5 mg of Coumadin daily. I also take.
325 mg enteric Aspirin
50 mg Atenolol ( beta blocker)
400 IU Vt E
1000 mg Vit "C" ( 500 morning, 500 evening)
Centrum Multi Vit
I home test weekly, and my INR stays mostly between 2.5 and 3.5, a very comfortable range for me.
Rob