Hot Stuff was a protein powder with token amounts of everything thrown into it. Some say the early original batch had a bit of steroids thrown in.
Ultimate Orange was Caffeine, Carb powder, and Ma Huang. It might of had Grapefruit extract also, but those were the big 3. The secret I think was that the dosages weren't really all that standardized, it was like you opened a few Diet Fuel bottles, uncapped the the pills, dumped them in the jug, and hoped for the best.
It was the best non-protein OTC supp of the 90's.