Whey protein isolate from grass-fed, undenatured sources, and some plant-based protein powders (that contain cystine) Vitamin C-rich foods, like oranges, kiwi, strawberries, bell peppers, as vitamin C helps recycle glutathione and enhance its synthesis Antioxidant-rich foods, such berries, spinach, avocados
Digestive Diseases and Sciences, 52 (9), 2387-2395
If it remains cloudy or contains visible particles after gentle swirling, it may indicate a problem with the peptide or contamination
3Aminoglycosides gentamicin, tobramycin, amikacin They can cause renal tubular toxicity, reducing magnesium reabsorption in the thick ascending limb of the loop of Henle