nobody can tell

There is no ultimate proof that a drug or procedure that is said to improve ones chances or symptoms, does not have part or all improvements experienced to be a placebo effect. This is because psychologically the thought of assistance can have such a massive effect in relieving an eliment of stress. There is absolutely no proof that it is the drug itself, non at all. Which in a way is a most possitive thing, the mind and body are so interlinked it is quite incredible