Vyvanse and AdderallâA Comparison. Vyvanse and Adderall are both amphetamines, a type of stimulant medicine. They work in much the same way. They stimulate the nervous system and increase the amount of neurotransmitters such as dopamine and norepinephrine in the brain. Adderall has been around longer than Vyvanse.
Aromatase, also called estrogen synthetase or estrogen synthase, is an enzyme responsible for a key step in the biosynthesis of estrogens. It is CYP19A1, a member of the cytochrome P450 superfamily (EC 1.14.14.1), which are monooxygenases that catalyze many reactions involved in steroidogenesis.
The role of estrogen in men is poorly understood by most non-specialists, and not fully understood by any as yet. Bodybuilders were the first adaptors of aromatase inhibitors in men, of course. Word quickly spread about the ability to use doses of the relatively inexpensive and potent testosterone esters beyond limits previously imposed by aromatase-driven, estrogenic side effects.