which is better glutathione or kojic acid vs Glutathione: for Skin Lightening in Pakistan? One range. Multiple benefits. Kojic
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Hepatology 43 , S45S53 (2006)
More research is therefore needed to evaluate the long-term safety and effects of GSH supplementation and to make recommendations on the chronic use of glutathione in people suffering from gastric disease

Additionally, the therapy may help to reduce symptoms of certain medical conditions, such as chronic fatigue syndrome or fibromyalgia

J Inflamm Res 14:20792090

Vitamin C Antioxidant that supports immune cell function and tissue repair during infection recoveryachieves higher blood levels than oral supplements

You need to query it and get it re-tested
