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.
Males and females, mice and humans, all make estrogen from testosterone, thanks to an enzyme called aromatase. Women have a lot more estrogen in the circulation, of course. Aromatase is familiar to many women with breast cancer. Breast cancer growth driven by estrogen is thwarted by giving women drugs known as aromatase inhibitors, which prevent the conversion of testosterone to estrogen.