MOTS-c dosage: there is no validated human dose

The honest answer to “how much MOTS-c should I take” is uncomfortable: nobody knows, because no one has done the study that would tell you. MOTS-c is a genuinely interesting mitochondrial-derived peptide, but its evidence base is almost entirely preclinical — cells and mice — and a preclinical evidence base cannot, by definition, hand you a human dose. Before treating any number on this page as a protocol, it is worth understanding why a real number does not yet exist. For the science underneath the molecule, start with the MOTS-c evidence monograph.

There is no validated human dose

State this plainly, because everything else follows from it: MOTS-c has never been studied in an adequately designed human therapeutic trial that established a dose, a schedule or a safety margin. The peptide was discovered and characterized in laboratory work, and the supportive efficacy data sit in animal models.^[1][3] No regulator has approved it for any indication, which means there is no manufacturer label, no titration guidance and no dose-finding study in people to anchor to. When a vendor or a forum quotes you a milligram figure, it is not citing a clinical dose — because none exists.

The doses that do exist are in mice, in mg/kg

The real dosing data lives in rodent studies, and it is expressed the way animal pharmacology always is: as milligrams per kilogram of body weight. In the discovery work, MOTS-c was administered to mice to demonstrate effects on insulin sensitivity and diet-induced obesity,^[1] and in the widely cited exercise-and-aging study, MOTS-c was dosed in mice to improve physical performance and counter age-related decline.^[3] Those experiments tell you the peptide is biologically active in an animal at a given mg/kg — they do not tell you what a person should inject.

Why mg/kg does not convert to a human protocol

It is tempting to take a mouse mg/kg figure, multiply by your body weight, and call it a dose. That is not how it works, and the reasons are not academic. Mice and humans differ enormously in metabolic rate, body-surface-to-mass ratio, peptide clearance and tissue distribution, which is why pharmacologists use species-scaling corrections rather than straight weight multiplication — and even those corrections only generate a starting point for a trial, not a therapeutic dose. A dose that moves a pathway in a mouse can be ineffective, or unsafe, in a person, and the only way to find out responsibly is the dose-escalation safety study that MOTS-c has never had. Reviews of the mitochondrial-derived peptide field are candid that these molecules remain early-stage and their translation to human therapy is unproven.^[4] Converting the animal numbers yourself skips precisely the step that protects you.

What the community ranges actually are

Search any peptide forum and you will find MOTS-c “protocols” — typically a few milligrams per week, sometimes split into smaller subcutaneous injections, often run in multi-week “cycles.” It is important to be precise about what these are: conventions that circulate among users, not findings from any study. They were not derived from human pharmacokinetics, they have no safety data behind them, and they vary from one vendor’s marketing copy to the next. Framing them as anything other than unvalidated, experimental self-dosing would be dishonest. They are what some people do; they are not what evidence supports.

Reconstitution: arithmetic, not a dosing endorsement

MOTS-c ships as a lyophilized powder that has to be reconstituted with bacteriostatic water before it can be drawn into a syringe, and people understandably want to know how to turn a vial size and a target amount into syringe units. That conversion is pure arithmetic — our peptide reconstitution calculator will do the mg-per-mL and insulin-unit math for any vial size you enter. But be clear about what that tool is and is not: it computes a volume from a number you supply. It does not validate that the number is safe or effective, because no evidence does. The math is trustworthy; the dose it is applied to is still a guess.

The honest bottom line

Reduced to what the evidence actually supports: MOTS-c has real, mechanistically grounded biology and real animal dosing data, but no established human dose and no human trial that defines one.^[2][5] The animal mg/kg figures do not convert into a personal protocol, and the ranges traded online are unvalidated conventions, not findings. Anyone who injects MOTS-c is, in plain terms, self-experimenting without a validated protocol on an unregulated product. If someone chooses to use it anyway, that decision — and the dose — should sit with a clinician who can supervise and monitor, not with a forum thread. For the broader read on this market, see our coverage of NAD+ precursors, where promising mechanism similarly outruns proven human benefit.