daily requirement of glutathione Vitamin C and supplementation: a review their additive effects on exercise performance Glutathione: Uses, Dosage, Side Effects

Studies show that it promotes the healing of different tissues, including skin, muscle, bone, and tendons.[ref] A peptide is a short chain of amino acids linked together with peptide bonds

Muscle strength assessments For the assessment of muscle strength, participants performed 1 repetition maximum (1-RM) tests on the free-weight bench press and angled leg press exercises [16] prior to the first dose of supplement and beginning of the resistance-training program and after 4 and 8 weeks RT and supplementation

But robust, high-quality evidence for durable cosmetic skin-lightening from IV glutathione is lacking, and the FDA has not approved glutathione for skin lightening

However, the "safety" of a supplement always depends on the individual, the dose, and the quality of the product