Yes, the skin brightening and pigmentation removal effects of glutathione tablets show different results based on individual skin types, personal habits and genetic makeup
In some cases, people may also experience reactions linked to the side effects of glutathione IV drip, especially when treatments are taken excessively or from unregulated sources
To learn more about the benefits, risks, and differences of compounded medication substitutes you may visit the FDA Drug Shortage List & FDA Compounding Substitutions Information Page
Drug Testing and Analysis, 7(1), 31-38
But for most purposes (like weekly maintenance injections), IM is the preferred route at home because its simpler (the vitamins absorb quickly from muscle into the bloodstream over a few hours)