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 *
16 current listings · Affiliate partnerSign-in required
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. Note: as of October 5, 2026 the storefront requires creating an account before products can be viewed, and the affiliate parameter is dropped at that redirect, so links below land on their registration page.
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
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| Compound | Vial size | Price | Stock | Updated | Link |
|---|---|---|---|---|---|
| 5-Amino-1MQ | 5mg | $34.99 | In stock | 2026-09-28 | View ↗ |
| BPC-157 | 10mg | $37.99 | In stock | 2026-08-15 | View ↗ |
| Cagrilintide | 5mg | $39.99 | In stock | 2026-09-28 | View ↗ |
| GHK-Cu | 1 vial | $34.99 | In stock | 2026-07-08 | View ↗ |
| IGF-1 LR3 | 1mg | $49.99 | In stock | 2026-09-28 | View ↗ |
| KPV | 10mg | $34.99 | In stock | 2026-09-28 | View ↗ |
| Melanotan 2 | 10mg | $29.99 | In stock | 2026-09-28 | View ↗ |
| MOTS-c | 10mg | $39.99 | In stock | 2026-09-28 | View ↗ |
| NAD+ | 500mg | $44.99 | In stock | 2026-09-28 | View ↗ |
| PT-141 | 10mg | $39.99 | In stock | 2026-08-17 | View ↗ |
| Selank | 10mg | $39.99 | In stock | 2026-07-08 | View ↗ |
| Semax | 10mg | $34.99 | In stock | 2026-09-28 | View ↗ |
| SLU-PP-332 | 25mg | $79.99 | Out of stock | 2026-09-28 | View ↗ |
| TB-500 | 1 vial | $44.99 | In stock | 2026-07-08 | View ↗ |
| Tesamorelin | 10mg | $69.99 | In stock | 2026-07-08 | View ↗ |
| Thymosin Alpha-1 | 10mg | $44.99 | In stock | 2026-09-28 | View ↗ |