Cardiogen is a niche research peptide with two things a buyer should understand up front: the evidence behind it is thin and preclinical, and the products are lightly regulated. That combination makes COA quality the single most important purchase factor — more than price. This guide teaches you how to evaluate any Cardiogen vendor; it pairs with our Cardiogen dosing guide and reconstitution guide.
This is not a ranked vendor list — for that, see our Best Cardiogen Vendors comparison. This guide teaches you how to evaluate any vendor yourself.
Research-context information only. Cardiogen (the AEDR tetrapeptide) is an unapproved research compound not evaluated by the FDA. Human evidence is limited to absent. This article reports how it is sold, not medical or legal advice. Consult a licensed physician for personal medical decisions.
Understanding Cardiogen Pricing
Cardiogen is a synthetic tetrapeptide (Ala-Glu-Asp-Arg), short and relatively simple to synthesize, but low-volume — so it doesn't see the deep multi-vial discounts common on BPC-157 or retatrutide. It is sold mainly as 20 mg lyophilized vials.
Current Market Pricing (2026)
| Vial Size | Typical Price Range | Price Per mg | Best For |
|---|---|---|---|
| 20 mg | $50 - $70 | ~$2.50 - $3.50/mg | The standard format; better per-mg value |
The pattern: the 20 mg vial is the near-universal Cardiogen format. Because community doses are small, even one vial holds many doses — so the practical question is how much you'll use within ~28 days of reconstituting, not how many vials a course needs.
Cost Per Course at Community Doses
There is no trial-established dose, so this is illustrative using common community figures. The math below is a general reference for any 20 mg vial — not vendor-specific or usage-specific guidance. A 20 mg vial at a 1 mg/day community dose covers ~20 days.
| Community dose | Days per 20 mg vial | Vials per 20-day course |
|---|---|---|
| 0.2 mg/day (200 mcg) | ~100 days | <1 (one vial lasts months) |
| 1 mg/day | ~20 days | ~1 |
| 2 mg/day | ~10 days | ~2 |
For current vendor-specific pricing with exact $/mg breakdowns, see our Best Cardiogen Vendors comparison.
Among recommended vendors, Swiss Chems carries Cardiogen in the 20 mg format at roughly $2.88 per mg after their code, which is the lowest verified price in the field at the time of writing. Swiss Chems also stocks the widest span of the Khavinson bioregulator family — Testagen, Prostamax, Thymogen and Pinealon all land cheapest there on the same 20 mg format. Always confirm the lot-matched COA before ordering. Vendor links here are affiliate links — we may earn a commission if you buy through them, at no extra cost to you.
How to Verify Cardiogen Quality
Cardiogen is a short peptide whose lyophilized powder looks identical regardless of purity or even identity. With a niche compound and limited oversight, the COA is the only reliable check — and arguably matters more here than for mainstream peptides.
What a COA (Certificate of Analysis) Should Include
Identity Confirmation
- Mass spectrometry confirming the molecular weight expected for the Ala-Glu-Asp-Arg tetrapeptide
- Amino acid sequence verification
Purity Testing
- HPLC purity — look for 98%+ (ideally 99%+) purity
- HPLC chromatogram showing a single dominant peak
Contamination Testing
- Endotoxin levels (bacterial contamination)
- Residual solvent analysis
- Heavy metals screening
How to Verify a COA Is Legitimate
- Check that the COA lists the specific product and a batch/lot number — not a generic template.
- Confirm the lot number on the COA matches the vial you receive.
- Look for a named third-party lab, not just an in-house claim.
- Cross-check the test date — a COA should be recent, not years old.
- Be wary if the vendor cannot produce a COA for the exact lot on request.
Red Flags to Avoid
- No COA available, or only a years-old generic one
- COA lot number that doesn't match the shipped vial
- Purity claims with no HPLC chromatogram attached
- A vendor making strong human efficacy claims for Cardiogen — the evidence doesn't support them
- No batch traceability
- Vendor unwilling to answer testing questions
