Hey there...this is an interesting product. Not "bad" by design, but it is hard for me to evaluate what doses of certain items have been used to verify mimicry of clinical trial data - in particular the Mucuna (and % L-Dopa in their product).
I think combination of GABA and niacin produce a wonderful pre-exercise GH-stimulus and most people learn about my protocol when coming on as advanced clients; the numbers are actually staggering.
I like Mucuna, but you can get 800mg (2 caps) of Now Foods Dopa Mucuna as low as $9.99 on the net (it's $12.99 at NP I believe but haven't checked this is a while). This way you can see what "high-dose" mucuna dosing; even upwards of 5 grams feels like (unfortunately...that's about 12 pills). I haven't really found any good mucuna powders.
If you're looking for "antioxidant prowess," why not look for NAC (600mg x 1 or 2 per day) + Vitamin C (I am still a fan of higher dosing here for those partaking in high-levels of oxidative activity - read: exercise, and you all should be, but no more than 500 mg per sitting to also avoid pro-oxidation. There is also a study to suggest the combo of NAC + Vit C raises testosterone which - when coupled with mucuna is really nice to add on to a purported GH boost.
Anyway, I am ok with this product...see nothing "negative" about it provided it doesn't sell for a lot of money as that is surely unnecessary.