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.
To complicate matters, fat cells are loaded with aromatase, an enzyme required for the biosynthesis of estrogen. The higher your percentage of body fat, the more estrogen you can produce and the fatter you will be unless you control your diet and use supplements and exercise to lower estrogen production. As you reduce stored body fat, your estrogen conversion will lessen as well.