Are There Any Interactions Between Warfarin, L-Theanine And Choline?

Posted on Thu, 27 Oct 2016

Question: This will take a little time to type OK? I am currently taking medications of Metoprolol, Diltiazem, Warfarin and Pravastatin for Atrial Fibrilation. Will dietary supplements of L-theanine 150 mg, Choline 150 mg, Phenylpiracetam 50 mg Noopept 15 mg daily affect any of my medications?

Answered by Dr. Ilir Sharka (1 hour later)

Brief Answer:
I would explain as follows:

Detailed Answer:
Hello!

Thank you for asking on HCM!

Regarding your concern, I would explain that the main interactions in your current therapy are:

a-Between warfarin adn L- theanin. Green tea decreases effects of warfarin by pharmacodynamic antagonism. So it may decrease the effects of warfarin.

b-While warfarin and choline both increase anticoagulation. So, choline can increase the effects of warfarin, by increasing your risk of bleeding.

So, they should be used with caution, by a close monitoring of INR. Combination may decrease warfarin efficacy.

There are no significant interactions between these supplements and diltiazem or metoprolol.

Hope to have been helpful!

Kind regards,

Dr. Iliri

Note: For further queries related to coronary artery disease and prevention, click here.

Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar