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 ( How to Inject Peptide Based Medications (Subcutaneous Method) Hone Health How to Give Yourself a Shot (SubQ) Olympia Pharmaceuticals Glutathione IV Therapy: What You Need to Know COEM Subcutaneous injection: Definition and what to expect Why Is Glutathione Added as a Push? Glutathione IV Power