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 ( Subcutaneous Injection: What It Is and How to Give One Glutathione infusions Cancer treatment and therapy in Germany Hyperthermia Centre Hannover Glutathione IV Therapy IV Lounge CT Glutathione Shots in Tacoma, WA Catalyst Medspa