Sourcing is the first and highest-leverage decision in a peptide brand. A cheap overseas vial looks like a margin win until a customs seizure, a purity complaint, or a spike in chargebacks takes down the brand — and often the payment account with it. Vet supply like the business depends on it, because it does.
Non-negotiables
- US manufacturing. Domestic supply avoids customs seizure risk and shortens lead times to days, not weeks.
- Independent COA on every batch. A Certificate of Analysis from a third-party lab, per batch — not a one-time sample. Purity and identity should be verifiable.
- Made-to-order capacity. Fresh production beats warehoused stock that has aged. We produce to order in about 7 days.
- Consistent fill and labeling. Uniform vials survive ad review and build customer trust.
Red flags
- No batch-level COA, or a single COA reused across products.
- Prices far below US norms — usually re-labeled overseas material.
- No lead-time transparency or minimum-order clarity.
Pricing and minimums
Wholesale should reward volume. Our vials are made to order past a 5-kit minimum with 20% off automatically — 135+ SKUs on the wholesale price list, better prices than overseas without the risk. See wholesale supply.
Sourcing is step one of a bigger build — see the full how to start a peptide brand guide.