Mechanism comparison
| Anabolic Steroids | Peptides | |
|---|---|---|
| Mechanism | Androgen receptor activation | Variable (GH, IGF-1, ghrelin, etc.) |
| Onset | Days to weeks | Weeks to months |
| Effect on lean mass | Large (10-30 lbs in cycle) | Modest (2-8 lbs typical) |
| HPTA suppression | Significant | Class-dependent, generally less |
| Liver toxicity | Oral steroids significant; injectable less | Generally none |
| Cardiovascular | Lipid panel changes, hypertrophy | Mostly favorable |
| Legal status (US) | Controlled substances (Sched III) | Some FDA-approved; others research-only |
Different goals different tools
For maximal lean mass gain in shortest time, steroids produce larger effect sizes. For recovery, longevity, sleep, body composition with cleaner profile, peptides often preferred. Many advanced users combine both classes.
Are peptides safer than steroids?
Generally yes, but depends on which peptide. GH-stimulating peptides have insulin resistance concerns.
Can I combine peptides and steroids?
Common practice. GH peptides commonly stacked with TRT.