"stronger" well I don't know about that. Maby more mg's(and the fact that human grade will have exactly what it is supposed to batch to batch because of regulations,and that would not be the case with the vetrinary versions. However some of the vet preparations have tested out real well . Some say that the ones made for human consumption have patended "delivery"systems, but I've read the ingredience and I didn't see anything besides binders/fillers. Maby Huck will reply on this because he is the one that would know. Also, as a side not be very wary of BTG's, there are some excellent fakes out there. I know I've had some. i kept the bottle and one pill and compaired it some some real ones that I found and could absolutly not tell them apart bottle or pill(only results), therfore it's my recommendation to stay away from the BTG's unless direct from the pharmacy