******************
OK. Maybe there are a few other OTC supplements that have some benefit, but as far as plant sterols are concerned, they are ineffective in the human body. Sterols were promoted heavily in the 80s' but quickly fell by the wayside simply because they didn't work. They didn't work then and putting them in a bottle with a new label isn't going to make them work now. Tribulus is a sterol that has hormonal effect in insects.
******************
i don't think so.
With ANY HERBAL one must first be sure to get a standardizeds, assayed % active ingredients product.
Many tribulus around are NOT even standardized for saponins ( not to mention protodioscin )= you're buying hay, hence that product isn't a fair representation of the herb chemicals.
Just think ginseng, st.john's worth, ephedra & many others before saying herbals are bogus.
Of course if your herb is poorly grown/harvested etc & contains no active chemicals...