How long does reconstituted MOTS-c last?

What the 28 day window actually measures

The table on this page gives one number for a refrigerated vial mixed with bacteriostatic water: 28 days. That figure is a handling convention for multi-dose vials, and what it tracks is the preservative in the water, not the peptide.

Bacteriostatic water contains a preservative whose job is to hold back microbial growth after the stopper has been punctured more than once. Preservative effectiveness is finite. The 28 day figure is the period over which a repeatedly accessed, cold vial is conventionally treated as still in-window. It is not a claim that the contents are potent on day 28 and inert on day 29, and it is not a purity test.

So the window answers a narrower question than most people ask of it. It does not tell you what is actually in your vial, whether the peptide survived shipping, or whether any of it does anything.

Why room temperature costs so much

The two wet-storage rows are the ones worth staring at. Refrigerated gives 28 days. Room temperature gives 2 days. Same vial, same water, same peptide.

That gap exists because preservative effectiveness falls away far faster when warm, and because warmth favors anything that got into the vial during a puncture. Cold does not make a vial sterile. It slows the processes that make an initially clean vial stop being clean.

The practical reading is that the refrigerator is not a nice-to-have step. It generates almost the entire window. A vial living on a counter is being handled under the short row of that table, whatever the label says.

The clock starts at mixing, not at first use

This is the most common counting error. The window runs from the day water was added to the powder, not the day the first dose came out. Mixing a vial and leaving it untouched in the fridge for two weeks does not bank those two weeks. It spends them.

Write the mixing date on the vial itself, not on a note in a phone. The object is what you pick up in poor light weeks later.

Time out of the fridge is cumulative in the same way. A vial that sits on a counter between doses does not get a fresh 2 day allowance each time. Every warm stretch draws down the same preservative capacity the 28 day figure assumes stayed cold. There is no formula here for converting warm hours into lost days, because we do not have one that would be honest.

Powder is the stable form, so mix late

The third row is the reason to think about vial size before storage. Unmixed powder, refrigerated, is stable for months to years. Wet, the same material is a 28 day object. Reconstitution starts the short clock, so it is worth doing as late as possible.

MOTS-c is sold in 5 mg and 10 mg vials, and the water volumes people use are 1, 2 and 3 mL. Adding more water spreads the same powder thinner, which changes how many syringe units correspond to a given amount of peptide. It does not change the 28 day window at all. The window is set by the preservative and the temperature, not by dilution.

What vial size does change is whether you finish the vial inside the window. Listings show amounts of 5 mg and 10 mg. A vial holding more total peptide than you will get through means the remainder sits past the window. Solve that before mixing, not after. For dry powder, the vendor date is the only anchor you have.

What we cannot tell you

We hold no reliable human pharmacokinetic data for MOTS-c. This site makes no claim about its half life, how long it takes to clear, or whether it accumulates with repeated administration. If a source gives you a confident half life figure for this compound, ask what human data it came from.

Storage windows and biological duration get confused constantly. The 28 days describes a glass vial in a fridge. It says nothing about how long the compound persists after administration.

MOTS-c is not approved by any regulator for human use. This page has no medical review. It does not tell you what dose to use, what to expect, whether it is safe, or whether it works.

What we do not know

We hold no reliable human pharmacokinetic data for MOTS-c, so this site makes no claims about its half life, how long it takes to clear, or how it accumulates. The arithmetic below concerns concentration and volume only.

This page answers arithmetic and handling questions. It does not tell you what dose to take, what to expect, or whether anything is appropriate for you, and there is no medical review behind it.

Common questions

Does the 28 days start when I first draw a dose?

No. The window is counted from the day water was added to the powder. Storage time before first use is spent, not banked. Date the vial at mixing so the count is unambiguous later.

I left my mixed vial out overnight. Is it ruined?

This site cannot tell you that. The table shows room temperature storage carries a 2 day window rather than 28 days, so warm time draws down the same capacity the longer figure assumes. There is no honest conversion from hours out of the fridge to days lost.

Does using more water make a mixed vial last longer?

No. Whether you use 1, 2 or 3 mL, a refrigerated vial in bacteriostatic water carries the same 28 day handling window. The window is set by the preservative and temperature, not by dilution. More water only changes how many syringe units correspond to a given amount of peptide.

Can I freeze a reconstituted MOTS-c vial to extend the window?

The data here covers refrigerated and room temperature storage for mixed vials, and refrigerated storage for dry powder. No figure is given for frozen solution, so no window is stated. Freeze-thaw handling is a separate question this page does not answer.

How long does the unmixed powder keep?

Months to years when kept refrigerated, which is why dry powder is the stable form. Use the vendor date as your reference point. That range describes dry peptide in good conditions and is not a guarantee for any individual vial.

Should I buy the 5 mg or the 10 mg vial?

That depends on how much you get through inside the 28 day window, which this page cannot answer for you. The relevant arithmetic is whether the total peptide in the vial will be gone before the window closes. This site does not recommend doses or amounts.