T2 (diiodothyronine)
Now this one had me genuinely stoked. Actually it still does. Unfortunately it just got yanked from the market so good luck finding it once the Biotest's supplies dry up. Was T2 new when Biotest released it? No, not really. It had actually been on the market for some time before in Syntrax's Lipokinetix product. For some reason, no one payed any attention to it though. Not too mention, Lipokinetix contained usnic acid (a protein uncoupler similar to an herbal DNP, a.k.a., Dinitrophenol) as well. Probably not the healthiest stuff on the planet. So what makes T2 so special you ask? It acts similarly to T3 in terms of boosting the metabolic rate and caloric expenditure, but with little to no shutdown of TSH when used in reasonable amounts. It seems to be a dieters dream-come-true. Unfortunately like many other effective products, all good things must come to pass when the FDA has something to say about it. The bottom line- it was just too darn close to being a drug. The pharmaceutical guys don't really like that too much. Bye bye T2. We'll miss you bud.