When you first see or hear it, it's like an oxymoron.
DRUG;Dictionary.com defines a drug as "a chemical substance used in the treatment, cure, prevention, or diagnosis of disease or used to otherwise enhance physical or mental well-being."
HOLISTIC:identifying with principles of holism in a system of therapeutics, esp. one considered outside the mainstream of scientific medicine, as naturopathy or chiropractic, and usually involving nutritional measures.
What drug in holistic? Maybe you can find some sort of angle with it? The idea of being holistic is to be drug free, at least that's what i think the popular understanding is. So as is, that's the way I see it hitting a persons mind right off the bat.
I could be wrong but I think this would need development that perhaps with extra research may turn up something.
Is their a brand, juice extract or something that would fit this?
The plural is parked(2003), maybe it does good parked?