Glutathione Injections: Benefits, Dosage, and Costs Hydrate IV Bar 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 ( IM Injections Revive at The Group Med Spa Glutathione Vitamin Injection ASAP IVs IV Hydration Experts of San Diego, Phoenix, Scottsdale, San Francisco