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.
Aromatase is an enzyme that converts testosterone to estrogen. The supplements that block estrogen do not block estrogen production directly. Instead, these supplements block the aromatase enzyme. This action also boosts the production of testosterone naturally without the use of steroids. Novadex XT and 6-OXO are estrogen blockers that function by blocking the aromatase enzyme.