Peptide Injection Sites
Where to inject matters. This visual guide shows you all the common injection sites for subcutaneous and intramuscular peptide injections.
Injection Site Body Map
The colored circles show common injection sites. Green markers are for subcutaneous (SubQ) injections, blue markers for intramuscular (IM) injections.
Subcutaneous (SubQ)
- Lower abdomen (left)
- Lower abdomen (right)
- Outer thigh (left)
- Outer thigh (right)
Intramuscular (IM)
- Deltoid (left)
- Deltoid (right)
- Ventrogluteal (left)
- Ventrogluteal (right)
SubQ vs IM — When to Use Each
Subcutaneous (SubQ)
Injected into the fat layer just below the skin. This is the most common method for peptides.
- Best for: Most peptides (BPC-157, CJC-1295, semaglutide, etc.)
- Needle: 29–31 gauge insulin syringe
- Depth: ~¼ inch (pinch fat, 45° angle)
- Pain level: Minimal
Intramuscular (IM)
Injected directly into muscle tissue. Used for faster absorption or specific peptides.
- Best for: Some GH peptides, larger volume injections
- Needle: 23–25 gauge, 1–1.5 inch
- Depth: Full needle length into muscle
- Pain level: Moderate
Site Rotation
Always rotate your injection sites. Injecting in the same spot repeatedly can cause:
- Lipodystrophy (changes in fat tissue)
- Scar tissue buildup
- Reduced absorption
- Increased pain and irritation
A simple rotation pattern: left belly → right belly → left thigh → right thigh → repeat. Keep at least 1 inch between injection sites.
Detailed Technique Guides
Ready to learn the specific injection technique? Continue here:
- Subcutaneous (SubQ) Injection Guide — Belly and thigh technique with step-by-step instructions
- Intramuscular (IM) Injection Guide — Deltoid and glute technique for IM injections