Intramuscular, subcutaneous, and intravenous injections explained Which glutathione methods are effective, IM or IV treatment, for detox and inflammation? 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) How to Give Yourself a Shot (SubQ) Olympia Pharmaceuticals Glow From Within: The Benefits of Glutathione, easy ways to improve your health