Probably just another placebo effect subsidized, pseudoscientific attempt to make money off an incurable, chronic ailment such as drug abuse and dependance, not unlike patent medicine, cure all Snake Oil remedies of yesteryear.
Giving the patients a drug cocktail of something, anything that produces noticeable effects which might be interpreted as being the desired outcome or close to it reminds me of when, back in the old days, some fake ecstasy dealer would sell somebody some DXM pills (or whatnot) and then, when the customer would come back and demand their money back, simply ask, "Well, did you at least feel _something_?" Since they did feel something, even though not MDMA, they were more likely not to raise a ruckus. Remember Herbal Ecstacy [sic] way back in the mid-1990's? Some guy got rich by pressing ephedrine into butterfly stamped pills and marketing it as a legal alternative to Ecstasy.
But hey, if this program works for some people, then that's great.