Intramuscular vs Subcutaneous injections what's the difference? At KDR, we often use peptides and wellness injections like NAD, glutathione, and HCG, but they are not all administered the same way. Intramuscular injections ( My Glutathione IV Treatment at AustinMD in Cedar Park, Texas Austin MD Aesthetics & Wellness Do Glutathione Vitamin Shots Aid in Improving Energy Levels? FINETUNE MedSpa Glutathione IM Shot Top 8 with Elev8: 8 Reasons Why Glutathione Injections Are the Ultimate Wellness Boost in Kitchener Waterloo