Where to buy MOTS-c.

You can buy MOTS-c from research-supply vendors online, and that's the only route open to you. No pharmacy stocks it, and almost no compounder will prepare it. Where to buy MOTS-c is really a question about which vendor rather than which channel, so this guide concentrates on the three checks that separate them.

MOTS-c

Referenced in this guide

Batch-matched COAHPLC + mass specResearch use only

The MOTS-c referenced throughout this article, supplied as a research compound with a certificate of analysis matched to the lot you receive — the check this site argues you should hold any supplier to.

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Where can you buy MOTS-c?

MOTS-c comes from research-supply vendors online, and effectively nowhere else. MOTS-c isn't an approved drug in any country, which closes the prescription channel outright and makes compounders decline. We'd rather set that expectation up front than let you find out at checkout.

• Doctor's prescription: Not available. MOTS-c isn't an FDA-approved drug, so there's no product for a prescriber to name.
• Compounding pharmacy: Theoretically possible, in practice rare. The FDA hasn't evaluated MOTS-c under the 503A bulk-substances framework, so the status is ambiguous. Most compounders won't touch it.
• Research-supply vendor: The standard channel and the one you'll use. Lyophilized powder under Research Use Only labeling. No prescription.

So your real decision is between vendors inside one channel. The rest of this guide is about telling them apart.

Which research-supply vendors to shortlist

Six vendors, ordered the way our supplier comparison orders them — on what each one will show you rather than what it claims — with every column pulled from the vendor's own storefront on 13 August 2026; there is no verified MOTS-c price anywhere in that set, so pricing is benchmarked on BPC-157 across the same vendors and no price column appears here.

Only the first three name their testing lab in their own site copy; on the rest you have to open the PDF and read the letterhead. Stock varies by compound, so confirm a vendor actually lists MOTS-c before you compare — what these columns describe is disclosure practice, and that is the part that travels across every compound a vendor sells. Disclosure: this site earns a commission on purchases made through its links, and Peptriva is one of the vendors it links to. Every column above is a document you can open or a page you can load yourself.

We hold no verified CAS number for MOTS-c, so the identity check is the mass instead: the certificate should report a molecular weight of 2174.6 g/mol and disclose methionine sulfoxide as a separate impurity, because oxidation at the two methionines is the failure this compound is prone to.

What is MOTS-c, exactly?

MOTS-c is a 16-residue peptide. Our reference sequence is Met-Arg-Trp-Gln-Glu-Met-Gly-Tyr-Ile-Phe-Tyr-Pro-Arg-Lys-Leu-Arg, and we check every CoA against it.

Here's what makes it unusual. Synthetic MOTS-c is chemically identical to a peptide your own body produces, encoded inside mitochondrial DNA. It circulates in blood, and its concentration drops measurably with age.

The discovery paper came from Changhan Lee and Pinchas Cohen's lab at USC in 2015. That paper is still the anchor for most of what follows.

That endogenous origin matters for sourcing. The 16-mer sequence is locked in, and it isn't subject to vendor reinterpretation.

A 2024 iScience paper identified a protein called CK2 as MOTS-c's direct binding partner in muscle. A natural variant called K14Q reduces that binding, and carriers show higher sarcopenia and diabetes risk, per Kumagai and colleagues. The sequence is real biology, not marketing.

What should you check before buying MOTS-c?

Check MOTS-c for the full 16-residue sequence, a mass-spec peak at 2175.6, a price inside the $50–$120 band, and explicit methionine-oxidation disclosure. The standard eight vendor criteria apply too. Four are sharper here.

1. Sequence verification: the 16-mer matters

MOTS-c is 16 amino acids encoded in the human mitochondrial 12S rRNA. A third-party tested CoA should list the sequence in full.

We'd cross-reference it against the original 2015 Cell Metabolism paper or the UniProt database entry. Both are public and free.

If a vendor sells “mitochondrial peptide” with no sequence, or a partial one, or a modified variant, the material doesn't correspond to the molecule in the published literature.

2. The exercise-mimetic claim outpaces the human evidence

“Exercise mimetic” is the most heavily used MOTS-c marketing line. The gap between what that phrase implies and what's been demonstrated in humans is the second-biggest red flag we see.

The mechanism is real in rodents. Exogenous MOTS-c improves exercise capacity and metabolic markers in young and aged mice. Acute high-intensity exercise also raises plasma MOTS-c in human subjects, per Woodhead and Merry.

What doesn't exist is a published randomized human trial showing synthetic MOTS-c produces the outcomes the marketing implies. Copy calling it a “workout replacement” is selling rodent data to human buyers.

3. Pricing that reflects the synthesis

MOTS-c is 16 residues with no modifications. Two methionines, two tryptophans and three arginines make synthesis a little harder than a plain 16-mer.

Expect $50–$80 per 5 mg and $80–$120 per 10 mg. Below $40 per 5 mg, ask why. Above $25 per mg, you're paying retail markup.

The HPLC purification step is what separates crude MOTS-c from a clean reference compound. Crude material carries deletion impurities and oxidation products, and that step is the first thing a cheap vendor skips.

4. Storage: methionine oxidation is the killer

Two methionines sit at positions 1 and 6, and they oxidize when air hits them. That's the single most important storage consideration for MOTS-c. Cold-chain shipping matters more here than for most simpler peptides.

Lyophilized MOTS-c, sealed and stored at −20°C, is stable for years. Reconstituted at 2–8°C, it's rated for 30 days.

Repeated freeze-thaw cycles speed up oxidation. A credible CoA quantifies methionine sulfoxide as a separate impurity, not just total purity. Pre-reconstituted product shipped warm is the highest-risk format you can buy.

What does MOTS-c cost in 2026?

MOTS-c costs $50–$80 for a 5 mg vial and $80–$120 for 10 mg. That's more per mg than the cheapest research peptides, and the two methionines and three arginines are why. The 2026 retail map:

• 5 mg vial: $50–$80, or $10–$16/mg. Most common size.
• 10 mg vial: $80–$120, or $8–$12/mg. Better per-mg value.
• 20 mg vial: $140–$200, or $7–$10/mg. Best per-mg economics.
• Multi-vial discounts: 10–20% off for 3-pack or 6-pack purchases.

Below $40 per 5 mg vial, ask why. The cheap end usually means skipped HPLC purification, or old stock with elevated oxidation.

Is MOTS-c legal to buy?

Yes. MOTS-c is legal to buy as a research reference compound. It isn't FDA-approved and it isn't EMA-approved either. We found no regulator anywhere that has cleared it. It sells under Research Use Only labeling at 21 CFR § 809.10(b)(9).

MOTS-c has not received a 503A categorization. That's meaningfully different from BPC-157, which got Category 2 in 2023, closing the compounding route for it. The FDA simply hasn't evaluated MOTS-c under that framework yet.

The WADA status is the line to watch. MOTS-c is not currently listed on the WADA Prohibited List. But WADA has flagged mitochondrial-derived peptides as a class of emerging interest.

The 2024 K14Q variant paper documented muscle effects in humans. That's exactly the kind of finding anti-doping agencies track. If you compete, assume MOTS-c could move onto the list on short notice.

What are the red flags when buying MOTS-c?

The MOTS-c red flag we weigh heaviest is pre-mixed liquid shipped warm, because the two methionines oxidize on air exposure and nothing on the vial shows it. Six more:

• Pre-reconstituted MOTS-c shipped without cold chain. The methionines oxidize on air exposure. Pre-mixed product at ambient temperature has a much shorter usable window than lyophilized powder, and oxidation damage is not detectable without analytical testing.
• “Exercise mimetic” or “workout replacement” copy. Real in mice. Unproven in humans. Vendor copy that frames MOTS-c as a validated human therapy is selling rodent data.
• No methionine oxidation disclosure on the CoA. A flat “≥98% purity” figure does not indicate whether the remaining impurity is oxidized methionine or another species. A credible CoA quantifies methionine sulfoxide as a separate impurity.
• Capsules, sublingual sprays, or transdermal patches. Not validated in published research. The lyophilized powder form reconstituted in aqueous solution is the format used across the peer-reviewed literature.
• Mass-spec not matching 2175.6 [M+H]⁺. A mass at 2191.6, which is 16 Da heavier, means oxidation has already happened.
• Internal QC only, no third-party ISO 17025 lab. An outside accredited lab on the report is the standard.
• “MOTS-c Plus,” “Stabilized,” or “MOTS-c Acetate” variants. The standard 16-mer is what the published biology applies to. Branded variants are marketing.

MOTS-c

10 mg ≥99% pure Lyophilized

Standard 16-mer mitochondrial-derived peptide. The same reference compound used across the 2024 CK2 binding study and the broader USC Cohen lab MOTS-c literature. COA with HPLC trace, mass-spec, and methionine oxidation disclosure ships with every order.

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Frequently asked questions

Can you get MOTS-c from a pharmacy or a compounding pharmacy?

No, and almost never. MOTS-c isn't approved, so no pharmacy stocks it and no prescriber can name it. Compounding is technically unresolved rather than banned, because the FDA hasn't categorized MOTS-c under 503A. In practice most compounders decline. Research-supply vendors are the working route.

Is MOTS-c legal to buy in the USA?

Yes, as a research reference compound. It isn't FDA-approved, it has no 503A categorization, and it isn't on the WADA Prohibited List so far. Selling it for human consumption is illegal. Buying it as research material is not.

How much should third-party tested MOTS-c cost?

Typical third-party verified pricing runs $50–$80 per 5 mg vial, $80–$120 per 10 mg, and $140–$200 per 20 mg. Below that range, lower purity or oxidized material is more likely. Above it, you're paying retail markup rather than synthesis cost.

Is the “exercise mimetic” claim real?

Real in mice. Unproven in humans. The 2015 discovery paper and the 2021 BBA review document the rodent effects, and acute exercise does raise endogenous MOTS-c in human blood.

But no human trial of synthetic MOTS-c administration has been published. The mechanism is genuine. The human data isn't there yet.

How does MOTS-c compare to other mitochondrial peptides?

MOTS-c and humanin are the two best-characterized mitochondrial-derived peptides, both from the USC Cohen lab. SS-31, also called elamipretide, is different: a synthetic four-residue peptide with completed Phase III trials, some positive and some negative.

MOTS-c has cleaner endogenous biology than SS-31 but no human trial record. SS-31 has a thinner mechanism story and real human data. See SS-31 vs MOTS-c.

What should a MOTS-c Certificate of Analysis show?

The full 16-aa sequence. HPLC purity ≥98% with a chromatogram. Mass-spec at [M+H]⁺ 2175.6. Water content 2–8% by Karl Fischer titration, a standard chemistry test for trace water. Counterion content, usually trifluoroacetate.

And critically, explicit methionine sulfoxide disclosure as a separate impurity, with an ISO 17025-accredited lab named on the report.

How should MOTS-c be stored?

The methionines oxidize, and that's the storage consideration unique to MOTS-c. Lyophilized at −20°C and sealed, it's stable for years. Reconstituted at 2–8°C, it's rated for 30 days.

Avoid repeated freeze-thaw cycles, because each one speeds up oxidation. Air exposure above refrigerator temperature destroys it faster than the typical peptide.