Injectable peptides require reconstitution, sterile technique, syringes and refrigeration and compounded injectables carry documented impurity and sterility concerns
According to WebMD, to treat B12 deficiency: Injecting 0.2 mcg/kg of vitamin B12 into the muscle or under the skin once daily for 2 days, followed by a 1000 mcg injection daily for 2-7 days and another 100 mcg injection weekly for 4 weeks thereafter has been used
Springer, New York, NY, pp 167180 Floh L, Toppo S, Orian L (2022) The glutathione peroxidase family: discoveries and mechanism
Improved Skin Elasticity: Glutathione boosts collagen production and enhances skin elasticity, leading to firmer, smoother, and younger-looking skin
Common injection sites include the thigh, shoulder, and buttocks
Glutathione is an antioxidant made in cells