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 ( Injectable Glutathione PUSH Med B12 + Lipo B + Skinny Shot + Glutathione Greenville, SC PUSH Med IV Bar, IV Lounge Glutathione IV Add On Vitamin Therapy Next Health Glutathione Push DermKing Institute