glutathione in infants is safe for lactating mothers Breastfeeding: The Multifaceted Impact on Child Development and Maternal Well-Being Glutathione for Lactating Moms: Safety – Glutathione - Wikipedia

Oral glutathione supplements are considered generally safe but results may be inconsistent due to absorption issues

N.ZeraK

We observed that carnosine alone as well as carnosine in combination with glucose resulted in healthier animals when on a glucose-fed bacteria diet

PubMed.gov

Despite the indiscriminate inclusion of RCTs judged satisfactory on mechanistic grounds, without considering the basis for treatment or legitimacy, each report concluded that active treatment reduced pain, especially using the micronutrient combination (39), and that although side-effects in up to 19% were usually mild ( eg headache, nausea, allergy, constipation, diarrhoea), they did cause some patients to withdraw from the trial

[3] Some enzymes have even achieved catalytic perfection , meaning they are so efficient that nearly every collision with their substrate leads to catalysis