A naturally occurring hormone (not actually a peptide) that regulates the sleep-wake cycle; sold alongside peptides on this platform despite belonging to a different chemical class. Widely available over-the-counter with a well-established safety profile. Compare Melatonin prices from $52 across 20 indexed vendors, with per-mg pricing and third-party COA verification.
| Vendor | Dose | Price | Per mg | Lab COA |
|---|---|---|---|---|
| AD Peptide | 10 mg | $52 | $5.2/mg | — |
| VendorPep | 10 mg | $53.47 | $5.35/mg | — |
| HK Qiangtai | 10 mg | $54 | $5.4/mg | — |
| GanZhu Peptide （Verna） | 10 mg | $55 | $5.5/mg | — |
| Tanran Peptide | 10 mg | $55 | $5.5/mg | — |
| Zhuoyue Peptide | 10 mg | $57.85 | $5.79/mg | — |
| PLY Lab | 10 mg | $60 | $6/mg | — |
| CGL Peptide | 10 mg | $60 | $6/mg | — |
| ZhuoYan lab | 10 mg | $60 | $6/mg | — |
| MKM Peptides | 10 mg | $65 | $6.5/mg | — |
| HMMpeptide (Molly) | 10 mg | $65 | $6.5/mg | — |
| HHM Peptide | 10 mg | $65 | $6.5/mg | — |
| HMM Peptide | 10 mg | $65 | $6.5/mg | — |
| LylaHM peptide(Heman peptide) | 10 mg | $65 | $6.5/mg | — |
| TRANMOO | 10 mg | $68 | $6.8/mg | — |
| MT Meipept | 10 mg | $70 | $7/mg | — |
| XH-Peptides | 10 mg | $70 | $7/mg | — |
| ROP Peptide | 10 mg | $72 | $7.2/mg | — |
| RL Peptide | 10 mg | $75 | $7.5/mg | — |
| LKZ Peptide | 10 mg | $80 | $8/mg | — |