T Bol is made by Thermolife, its a test booster, depending on your age would determine if this is required, younger guys under 21 do not need this, your bodys test tapers off in the thirtys. I have used test boosters before, not this one though as i am 38. Generally speaking the Thermolife brand products overall appear to be well trusted. Alot of test boosters dont do much bang for the dollar, its all relative to what is being spent against what you could be buying eg creatine, glutamine, protein or foods.
AZZA