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Human research suggests glutathione supplementation may improve glutathione status and support antioxidant defenses, though questions remain regarding the relative absorption of different formulations.60 61 62 Liposomal products have become particularly popular because they may improve bioavailability.63 For a deeper dive into the science and our favorite products, see our guide to the best glutathione supplements

Repeated injections in one location can cause lipohypertrophy (thickened fatty tissue) or lipodystrophy, which affects peptide absorption and creates visible bumps

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