[rootedbox]

I would not mess with Saint Johns wart. It will make you feel happy and cheery; but side effects are brutal. And if you participate in other drugs it might have harsh side effects.

[chrisrxth]

Are you mainly referring to it being a CYP3A4 inhibitor?

[ak1394]

And it's been banned in EU in 2011.

[gabemart]

It's still available for sale from the biggest herbal supplement retailer in the UK [1]. That fact alone makes this claim seem unlikely.

[1] http://www.hollandandbarrett.com/shop/product/holland-barret...

[ta0n0n0]

A quick google search makes it sound more like all herbal medicines are now more strictly regulated but not banned.