He sold supplements that were spiked with real drugs. His sexual enhancer contained viagra and some other supplements contained other things.
Halodrol was a steroid sold as a prohormone.
Thyro tabs contained T3 or T4 or both.
Novedex XT is ATD, a pharmaceutical/synthetic aromatase inhibitor.
Plasmajet contained levitra.
Detonate had "dendrobex", which was actually ETHamphetamine, a methamphetamine analog (100% illegal).
Maybe I'm forgetting something, but Gaspari's profits came mostly from drug-laced products.
Lotsa interesting discussion about Gaspari and others in the supplement industry in this thread:
http://www.thermolife.com/forum/f23/gaspari-implosion-begins-2446.html