What an LL-37 dose actually costs

Cost per dose is not price divided by milligrams

The obvious way to price a peptide is to divide what you paid by the milligrams in the vial. That number is usually wrong, because milligrams are not what leaves the vial. Doses are. If the vial contents do not divide cleanly into your dose, the remainder sits there, paid for and never drawn.

The correct denominator is whole doses. Everything left after the last complete dose is stranded product, and its cost spreads across the doses that did come out.

This site holds no pricing information for LL-37 and will not print a figure in dollars. What it computes is the denominator. Once you have the whole dose count for a given vial at a given dose, the division is yours to do with whatever you actually paid.

What the table on this page shows

The table covers a 0.25 mg dose against the two vial sizes LL-37 is commonly sold in, 5 mg and 10 mg. Three things are worth pulling out of it.

First, neither vial strands anything at that dose. Both show zero stranded and zero waste, so the full contents convert into complete doses and the effective cost per dose is simply the vial price over the whole dose count, with no penalty added.

Second, the 10 mg vial yields exactly twice the doses of the 5 mg vial. That is what even division produces. Neither size is more efficient on a waste basis here. If one works out cheaper per dose, that comes from the seller's pricing, not the arithmetic.

Third, and this generalizes: even division is a property of the pairing, not of the compound. The table addresses 0.25 mg. It says nothing about the other dose amounts that appear in listings, and the clean result should not be assumed to carry over to them.

Reconstitution volume does not change the cost

LL-37 is sold as a dry powder and mixed with bacteriostatic water before use. Listings commonly show 1 mL, 2 mL or 3 mL. It is easy to assume more water means more doses. It does not. The vial holds a fixed mass of peptide and water adds nothing to it.

What volume changes is concentration, and therefore how many syringe units one dose occupies. More water gives a more dilute solution and a larger draw for the same milligram amount. Less water gives a smaller draw. The whole dose count is identical either way, so cost per dose is identical too.

The reason to care about volume is measurement, not economics. A dose landing on a very small number of syringe units is harder to draw consistently, and inconsistency shows up as product lost rather than delivered. That is a real cost, but not one this page can quantify.

What is not known about LL-37

LL-37 is not approved by any regulator for human use. There is no approved label, which means no agreed dose, no agreed schedule, and no reviewed safety profile to compare a listing against.

We hold no reliable human pharmacokinetic data for LL-37. This site makes no claim about its half life, how long it takes to clear, or whether it accumulates with repeated use. Any cost model assuming a dosing frequency assumes something nobody here can verify. The arithmetic on this page concerns concentration, volume and division only.

This page also does not tell you what dose to take, what to expect, whether it is safe, or whether it works. There is no medical review behind this site and those are clinical questions.

Running the number yourself

Take the whole dose count for your vial size at 0.25 mg. Divide the price you paid, including shipping, by that count. That is your cost per dose with stranded product accounted for, because at this dose there is none.

For a dose the table does not cover, the method is the same but the remainder may not be zero. Count the complete doses that fit, ignore the remainder as usable product, and divide the full vial price by complete doses only. The remainder was paid for and stays in the numerator.

Compare vial sizes on cost per whole dose, never cost per milligram. Cost per milligram flatters the larger vial whenever it strands more product.

What we do not know

We hold no reliable human pharmacokinetic data for LL-37, 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 a 10 mg LL-37 vial cost less per dose than a 5 mg vial?

Not because of waste. At a 0.25 mg dose both divide evenly, 40 whole doses from the 10 mg and 20 from the 5 mg, with nothing stranded in either. Any per dose saving on the larger vial comes purely from how the seller prices it.

Does mixing with 3 mL instead of 1 mL give me more doses?

No. The vial holds a fixed mass of peptide and water does not add to it. Moving from 1 mL to 2 mL or 3 mL changes concentration and the syringe units per dose, but the whole dose count and the cost per dose are unchanged.

Why measure waste in doses rather than milligrams?

A partial dose left in a vial is not usable product. Milligrams that cannot be assembled into a complete dose are paid for and discarded, so they belong in the price rather than the quantity. Dividing by whole doses puts that cost where it falls.

How often would I use a vial?

This site cannot say. We hold no reliable human pharmacokinetic data for LL-37, so we make no claim about half life, clearance or accumulation, and nothing here implies a frequency. Without one, the math gives cost per dose but not cost per week.

Is 0.25 mg the correct LL-37 dose?

This page does not answer that. The figure is used because it appears in product listings, and it is an input to the division, not a recommendation. LL-37 is not approved by any regulator for human use and there is no medical review behind this site.