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How to Store KLOW: Refrigeration and Shelf Life

Whether KLOW needs refrigeration, how long powder and mixed vials keep, and what to do if a vial got warm.

Medically reviewed by Juan Pablo Frías, MD · · DisclosureFour-peptide blendUpdated

For the FDA-approved product, the label and package insert are the authority on storage. The notes below are for vials of powder that are mixed before use.

Storage at a glance

Quoted from published stability studies, with the source for each row. These are for each ingredient of KLOW; none was tested for the blend.

KLOW storage conditions
ConditionWhat the source saysSource typeSource
KPV: Acid, alkali and hydrogen peroxide stress conditions (aqueous solution)KPV degrades mainly to lys-pro-diketopiperazine under these stress conditions; the paper reports no shelf-life or storage-temperature data in its abstract.Stability studyBiomedical chromatography 2015, PMID 25298219

Unmixed powder

Freeze-dried (lyophilized) powder is the form most vials ship in. Sourced conditions for KLOW are in the table above; anything they do not cover is unverified.

  • Keep vials sealed, dry and out of direct light and heat until use.
  • Check the label for a lot number and an expiry date. A vial with neither tells you nothing about its age.

After mixing

Once mixed with bacteriostatic water, peptide vials are usually kept in the refrigerator and used within a limited time. Sourced conditions for KLOW are in the table above; anything they do not cover is unverified.

  • Write the mixing date on the vial.
  • Swab the rubber top with alcohol before every draw.
  • Do not freeze a mixed vial unless the product information says you can.

If it got warm or looks wrong

Do not use a vial that: looks cloudy, has particles or has changed colour (unless the product information says that is expected), or has a damaged seal.

How much potency KLOW loses after a temperature slip is covered only as far as the stability rows above go. When in doubt, ask a pharmacist.

Common questions

Does KLOW need to be refrigerated?

Follow the storage instructions on the approved product's label. Compounded or research versions should come with their own instructions; if they don't, ask the pharmacy.

How long is KLOW good for after mixing?

That depends on the product and how it was mixed. We publish a shelf life only from a manufacturer or a stability study; the sourced conditions are on this page.

More on KLOW

DosageDoses used in published studies, with the source for each.Blend calculatorSplit a blend vial into per-peptide amounts and units.Side effectsWhat labels and studies report, and what is unknown.ResultsStudy outcomes and when they were measured.PricePrice per mg and per week from dated listings. No vendor links.Legal statusFDA, compounding and WADA status with dates.

Sources

  1. 1Stability-indicating HPLC assay for lysine-proline-valine (KPV) in aqueous solutions and skin homogenates.Biomedical chromatography : BMC · 2015PMID 25298219Accessed 2 Oct 2026

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