Subcutanous injection self administration South Tees Hospitals NHS Foundation Trust 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 ( IV Nutrient Therapy Chicago Vitamin Infusion Drip Benefits of Glutathione Injections Lexington SC and Columbia SC 10 Pack Glutathione Intramuscular Shot ELIXR IV Therapy How Glutathione IV Therapy Supports Natural Detoxification AZ IV Medics