Lipoderm-Y contains only Yohimbine HCl and Caffeine Anhydrous.
Lipoderm-Ultra, however, contains Yohimbine HCl, Caffeine, Octopamine HCl, SesaThin, Synephrine, ALCAR, Ascorbyl Palmitate, and Lecithin.
If you're looking into topical fat loss products, I would suggest also looking into
Avant Research's Napalm, which can be stacked with a Lipoderm or used solo.