Thiopurine Drugs Repositioned as Tyrosinase Inhibitors[v1] Preprints.org Glutathione IV Therapy Benefits, Uses, and What to Expect Tu Clnica Hispana Familiar Glutathione: Uses, Dosage, Side Effects Vinmec Tyrosinase inhibitors are key ingredients for addressing hyperpigmentation issues like post inflammatory hyperpigmentation (PIH) and post inflammatory erythema (PIE). To understand how they work, it's helpful to know that PIH is a dark spot