Measuring dopamine in postmortem tissue requires careful consideration of the isolation procedures used, as exposure to oxygen, metal ions, or specific enzymes can induce oxidation of the catechol ring and result in the production of dopamine quinones (Graham et al., 1978
But the benefits go beyond just skin brightening
Zeevalk GD, Manzino L, Sonsalla PK, Bernard LP
Safety and side effects: A meta-analysis of multiple studies in COPD patients showed no significant adverse effects at doses ranging from 600 mg to 3g/day.[ref] Studies in healthy adult athletes go up to 20g/day (not recommending this, just including it for safety).[ref] Conversely, in Parkinsons patients, there was a high number of adverse events at 6g/day of NAC
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