Tamoxifen and Caffeine

I’ve just read an article in Prima saying that 2-3 cups of caffeinated coffee a day helps make tamoxifen more effective.  Has aybody else heard this?  I’d given up caffeine because I thought it would help prevent my BC reoccuring but now I’m not so sure it was a good idea.

Sorry I havent, but would be interested to hear what anyone else has heard. amd66, not a big drinker of coffee though.