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 ( Why Is Glutathione Added as a Push? Glutathione IV Power Subcutaneous injection: Definition and what to expect How to Give Yourself a Shot (SubQ) Olympia Pharmaceuticals Is subcutaneous (sub q) glutathione injection safe and effective as a supplement for asthma management? How to Inject Peptide Based Medications (Subcutaneous Method) Hone Health