Important: Tesamorelin is weight-neutral and not a weight-loss drug (see our full tesamorelin guide). The FDA-approved version, Egrifta, is a prescription medicine; research-grade tesamorelin is sold for laboratory research use only (not for human consumption). This page compares research suppliers on price and quality — it is not medical advice or a purchase recommendation for personal use.
If you're sourcing tesamorelin for research, two numbers decide a good buy: purity (backed by a current, lot-specific COA) and price per mg. The research-chemical market is unregulated, so both vary widely. Below is our live pricing across vetted vendors, plus the criteria we use to rank them.
Is tesamorelin legal to buy?#
Tesamorelin sits in the standard research-peptide space: it is not a controlled substance, but the FDA-approved product (Egrifta) is prescription-only, while research-grade tesamorelin is sold strictly for laboratory research. There's no prescription for research-grade material because it isn't being sold as a drug — reputable vendors label it "research use only, not for human consumption." Treat that line as a real legal and safety boundary.
Tesamorelin vendors compared (US)#
Several vendors we track carry tesamorelin, and the live table above ranks them all by today's cost per mg. These are the two we recommend for US researchers, ranked on testing transparency, payment protection, and track record:
Peptide Supply Co. — best overall (our #1)#
Peptide Supply Co. is our top-rated US source and carries tesamorelin. It publishes public, per-batch HPLC COAs (consistently 99%+ purity) on a no-login Lab Results page, ships same business day with tracked, discreet US delivery, and — unusually for this market — accepts credit cards and crypto (plus Zelle). Cards mean real buyer protection. Confirm its current tesamorelin price in the live table above.
Elyria Bio — lot-verifiable COAs#
Elyria Bio carries tesamorelin, with certificates from ILS Laboratories and BTLabs; the ILS certificates carry lot identifiers you can check against the lab's own records rather than taking the vendor's word for it. It accepts Venmo, Cash App, X Money, crypto and card. One practical warning: a card payment shows up on your statement as FLOW GRADE, not Elyria Bio. The honest caveat: it is a newer vendor, and we have not re-run its certificates ourselves, so treat its purity figures as vendor-published.
Check where a vendor ships before you order. Our tracker lists every vendor that carries tesamorelin, and not all of them ship to the US. Confirm the shipping region on the vendor's own site before you build a cart.
How we compared — and what to look for#
The market is unregulated, so the burden of verification is on you. Before buying tesamorelin from any vendor:
- Demand a current, lot-specific COA — HPLC purity (ideally ≥98%) plus an identity method (MS) confirming it's actually tesamorelin. A generic or stale certificate is a dealbreaker.
- Compare cost per mg, not sticker price — tesamorelin is commonly sold in 10 mg vials, and multi-vial pricing changes the per-mg math.
- Weigh payment protection — card payment gives you chargeback recourse; peer-to-peer apps (Venmo, Zelle, Cash App, PayPal Friends & Family) and crypto do not.
- Check shipping origin and policy — US-domestic, tracked, discreet; confirm reshipping/refund terms.
Tesamorelin price: what to expect#
Research-grade tesamorelin is typically sold as a 10 mg vial, and per-mg cost varies meaningfully between the budget and premium vendors. Rather than quote numbers that drift, we let the live table above normalize everything to current cost per mg so you compare like for like. As a rule, factor in payment protection and COA quality — the lowest per-mg price isn't a bargain if it's peer-to-peer-only with an unverifiable certificate.
Egrifta vs research-grade tesamorelin#
These are not the same product, and conflating them is a compliance trap:
- Egrifta (and Egrifta SV/WR) is the FDA-approved prescription drug, manufactured to pharmaceutical standards and dispensed for a specific medical indication (visceral fat in HIV-associated lipodystrophy). It requires a prescription and is dispensed through pharmacies.
- Research-grade tesamorelin is the same molecule sold by research-chemical suppliers for laboratory use only — not manufactured, labeled, or sold as a medicine, and not for human consumption.
Don't treat a research-grade vendor as a source of the approved drug, and don't apply Egrifta's clinical dosing to research material as if it were a treatment.
Frequently asked questions
Where can I buy tesamorelin?
From research-chemical suppliers that provide a current, lot-specific COA. Compare live cost-per-mg in the table above; Peptide Supply Co. is our top-rated US vendor. Check that a vendor ships to your country before ordering.
How much does tesamorelin cost?
It's usually sold as a 10 mg vial, with per-mg cost varying between budget and premium vendors. Use the live table to compare current cost per mg rather than sticker price.
Is research-grade tesamorelin the same as Egrifta?
It's the same molecule but not the same product. Egrifta is the FDA-approved prescription drug; research-grade tesamorelin is sold for laboratory research use only and is not a medicine.
Do you need a prescription to buy tesamorelin?
You need a prescription for Egrifta (the approved drug). Research-grade tesamorelin is sold without a prescription for research use only — which also means no clinical oversight comes with the purchase, so COA verification matters.
What should a tesamorelin COA show?
A recent, lot-specific certificate reporting HPLC purity (ideally ≥98%) and an identity confirmation by mass spectrometry, ideally from a named third-party lab.