Glutathione for skin lightening Dr Naphisabet Wanniang GLUTATHIONE INJECTIONS I.M vs SubQ for Growth Hormone, the old adage of what's best? At therapeutic doses, I.M may produce a slightly higher and earlier CMax for GH level. But the overall exposure (AUC) Glutathione Injections: Side Effects & Benefits Intramuscular Injection: Sites, Techniques, and Tips Transcend offers injectable administration forms for many of its medications, but did you know that there are different methods of injection administration? Intramuscular (injection into the muscle) vs Subcutaneous (injection into subcutaneous