Frequently asked

Bitcoin (mainnet and Lightning), Ethereum, USDT and USDC across Tron, Polygon, Base, and other major networks — plus a rotating set of L2s shown live at checkout. Stablecoins are the simplest choice for first-time buyers: the price you see is the price you pay, no volatility between confirm and settle. See On-Chain Settlement for the full thinking.

Lightning and most stablecoin rails (USDT-TRC20, USDC on Polygon or Base) confirm in under a minute. On-chain Bitcoin averages 10–15 minutes. The moment the network confirms, your order moves to fulfillment — same-day if placed before 2 PM EST, next business day after.

Yes — before it ships. Email [email protected] with your order number. We'll send the refund directly to a wallet address you specify, in the asset you originally paid with or a stablecoin if you prefer. Once a tracking number is issued, the order can no longer be cancelled.

No. Guest checkout is supported — you only need an email for order confirmation and tracking. Accounts are optional and give you order history, faster repeat checkout, and COA lookup.

Every batch has an independent COA from Janoshik Analytical or Bioviridian. You can look up any batch at pepidyn.com/coa using the batch number on your vial label. The link is also included in your order confirmation email.

Target purity is ≥99% for all SKUs, verified by HPLC-MS. The COA reports actual purity for each batch (typically 99.2-99.8%). If a batch falls below 99% we don't release it for sale.

Solid-phase peptide synthesis (SPPS) in GMP-aligned facilities. After synthesis, products are purified by reverse-phase HPLC, lyophilized, and packaged in sealed glass vials under inert atmosphere.

Lyophilized peptides are stable at 2-8°C (refrigerated) for 24+ months from manufacture date. Room temperature transit (up to 4 weeks) does not affect potency. After reconstitution, store at 2-8°C and use within 30 days.

Bacteriostatic water (BAC water) is sterile water containing 0.9% benzyl alcohol as a preservative. It's the standard solvent for reconstituting lyophilized research peptides. We sell 30ml vials of BAC water as an ancillary SKU.

No. Reconstitution and dosing are research-design decisions made by qualified investigators. We supply the compound and its identification data — protocols are outside our scope. Industry reference protocols are publicly available in peer-reviewed literature.

Both are USDT (Tether), but on different blockchains. TRC20 USDT is on the Tron network — lower fees (under $1) and faster. ERC20 USDT is on Ethereum — higher fees but more widely supported. Use whichever your wallet supports.

No. Outer packaging is plain — no Pepidyn branding, no peptide-related markings, no identifiable return address. The customs declaration is generic. Only inside the package do you see the branded boxes.

Most of the world. See Shipping for the full list of regions, carriers, and restrictions.

Rare but possible internationally. We send a one-time free reshipment if customs intercepts your order. After two seizures, we work with you to find a different route or refund.

Email [email protected] within 7 days with your order number. We file a carrier claim and ship a replacement immediately at no cost. Insurance is included on every order.

Pepidyn products are sold for in vitro laboratory research only under the standard Research Use Only framework — the same framework used by Sigma-Aldrich, Cayman Chemical, and Tocris. They are not DEA-controlled substances. Local regulations vary by jurisdiction; you confirm at checkout that you're a qualified researcher. See our Research Disclaimer for the full statement.

No. FDA-approved peptides (Sermorelin, Tesamorelin, PT-141) require a valid prescription dispensed through a licensed pharmacy. For clinical use, talk to your physician — for research, browse the catalog.