How we make money: Some vendors listed are affiliate partners, meaning we earn a commission on sales referred through our links. Affiliate status does NOT influence a vendor's trust score — scores are calculated only from the objective criteria published below. Affiliate partners are marked with an asterisk (*).
Optimum Formula *
20 current listings · Affiliate partner
Southern California vendor with a published COA library and unusually broad checkout options — ACH, Venmo, Cash App, PayPal. Ships same-day before noon PST via FedEx 2-Day, backed by a late-delivery loyalty guarantee.
Coupon code: BHACK (applies at checkout on the vendor's site)
Trust score breakdown
Score computed only from these published objective criteria (Third-party COA / testing 32%, Ship reliability & speed 18%, Refund policy 12%, Reship policy 12%, Payment options 10%, Years active 6%, Support responsiveness 10%).
- Third-party COA / testing
- Published
- Ship reliability & speed
- 9/10
- Ships from
- United States
- Refund policy
- Yes
- Reship policy
- Yes
- Payment options
- ACH (Link Money), Venmo, Cash App, PayPal, Card-to-crypto
- Years active
- 1
- Support responsiveness
- 9/10
Current listings at Optimum Formula
Advertisement. The links below are paid affiliate links. If you buy through them we may earn a commission, at no extra cost to you. This does not affect the prices shown.
| Compound | Vial size | Price | Stock | Updated | Link |
|---|---|---|---|---|---|
| 5-Amino-1MQ | 5mg | $34.99 | In stock | 2026-09-07 | View ↗ |
| BPC-157 | 10mg | $37.99 | In stock | 2026-09-07 | View ↗ |
| Cagrilintide | 5mg | $49.99 | In stock | 2026-09-07 | View ↗ |
| GHK-Cu | 1 vial | $34.99 | In stock | 2026-09-07 | View ↗ |
| IGF-1 LR3 | 1mg | $49.99 | In stock | 2026-09-07 | View ↗ |
| KPV | 10mg | $44.99 | In stock | 2026-09-07 | View ↗ |
| Melanotan 2 | 10mg | $29.99 | In stock | 2026-09-07 | View ↗ |
| MOTS-c | 10mg | $44.99 | In stock | 2026-09-07 | View ↗ |
| NAD+ | 500mg | $54.99 | In stock | 2026-09-07 | View ↗ |
| PT-141 | 10mg | $39.99 | In stock | 2026-08-17 | View ↗ |
| Retatrutide | 30mg | $299.99 | In stock | 2026-08-17 | View ↗ |
| Retatrutide | 10mg | $119.99 | In stock | 2026-08-17 | View ↗ |
| Selank | 10mg | $39.99 | In stock | 2026-09-07 | View ↗ |
| Semaglutide | 5mg | $59.99 | In stock | 2026-09-07 | View ↗ |
| Semax | 10mg | $34.99 | In stock | 2026-09-07 | View ↗ |
| SLU-PP-332 | 25mg | $79.99 | Out of stock | 2026-09-07 | View ↗ |
| TB-500 | 1 vial | $44.99 | In stock | 2026-09-07 | View ↗ |
| Tesamorelin | 10mg | $69.99 | In stock | 2026-09-07 | View ↗ |
| Thymosin Alpha-1 | 10mg | $44.99 | In stock | 2026-09-07 | View ↗ |
| Tirzepatide | 60mg | $299.99 | In stock | 2026-09-07 | View ↗ |