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Bottom line: Healthy kidneys are capable of processing the amino acids in collagen, provided you maintain high fluid intake and do not drastically overconsume protein relative to your body's needs

Be cautious with unregulated sources

No peptide has been proven safer than the other for muscle growth

However, the NAC monotherapy arm (600 mg three times daily) showed a trend toward slower decline in forced vital capacity (FVC) that did not reach statistical significance compared to placebo (Martinez et al., N Engl J Med, 2014) [45]

Its important to consult a healthcare professional before starting glutathione supplements, especially if you have underlying health conditions or are on prescription medications