Anyone have any experience bringing powdered food supplements into the UK?

I was hoping to bring some maca root power back with me as it's so cheap here.

Will I be grilled or subjected to special searches? Should I pack it in my checked or hand luggage? Am I allowed to bring it into the UK.
Is it simply not worth the hassle? Although it's in labelled packages it's a, ahem, golden brown powder...

I'm flying via Paris which might make things slightly more complicated I suppose as they'll be on high alert.

Posted By: Worzel Scrimmage, Aug 9, 00:56:05