知乎，让每一次点击都充满意义 —— 欢迎来到知乎，发现问题背后的世界。 L-DOPA is often a immediate precursor of dopamine – it's the compound that dopamine is produced from. It will get converted to dopamine because of the enzyme aromatic amino acid decarboxylase (AADC or AAAD), which is active the two from the bloodstream and inside the brain [1]. https://brucen777alw0.evawiki.com/user