Who makes this, and the rules it follows.

1. Who makes this

VialClock is built and maintained by Indra Poudel, an independent software developer. He also builds theVialClock iOS app.

2. Why it exists

Search for how to convert a peptide dose into syringe units and you mostly find vendor sites selling the compound, forum posts quoting a units figure with no concentration attached, and calculators that give a number with no working.

The arithmetic itself is not hard. Vial amount divided by liquid volume gives a concentration; a dose divided by that concentration gives a volume; a U-100 syringe is graduated so one unit is 0.01 ml. What is hard is doing it under pressure, with a label in one hand, and catching your own mistake. Every tool here shows its working so you can check it rather than trust it.

3. Editorial policy

These rules are applied to every page, and you should hold us to them:

• Arithmetic only. The calculators operate on numbers you enter. They do not fill in a dose for you and do not suggest one.
• Regulatory status is stated, not buried. Where a compound is not approved for human use, the page says so plainly, usually in its own section.
• Approved doses are cited, not restated. For an approved medicine the prescribing information is the authority. This site links to it rather than reprinting a figure that may be out of date by the time you read it.
• No invented statistics. If an incidence rate or a storage window is not something we can point to a source for, it is not given a number.
• No prices without a source. Undated prices read as current and go stale invisibly, so figures we cannot date are removed rather than left to rot.

4. What this site will not do

• Recommend a dose, a frequency, a protocol, a compound or a supplier.
• Tell you whether a compound is safe or appropriate for you.
• Sell, broker or link to anywhere selling any of the substances discussed.
• Carry advertising, or accept payment to cover a compound or present it favourably.

Nothing on this site is sponsored. There are no affiliate links. The only thing sold anywhere is a subscription inside the iOS app, and no part of the website is written to push it.

5. Sources we use

Regulatory and dosing claims are cited to the primary source, and the page says what each source is being cited for. In practice that means:

• DailyMed, run by the U.S. National Library of Medicine, for current prescribing information.
• Drugs@FDAfor approval status and history.
• The FDA's bulk drug substances pagesfor what may and may not be used in pharmacy compounding.
• The World Anti-Doping Agency prohibited listfor status in tested sport.

Every cited link carries the date it was last checked. Regulatory pages move, and a citation nobody has opened in a year is not much of a citation.

6. Corrections

If something here is wrong, tell us and it gets fixed. Arithmetic errors are treated as urgent and go out the same day where possible.

This has already happened. An early version of the reconstitution calculator told you to add water when a dose overflowed the syringe and to remove water when it fell under two units. Both were backwards, since syringe units scale with the liquid volume. It was found in an audit, corrected, and the correction is recorded in the public commit history.

7. The app

VialClock for iOSdoes what a stateless website cannot: it remembers. Which vial, mixed when, how many doses are left, which site you last injected, and what you logged. The calculators are free in the app, as they are here.

8. Contact

hello@vialclock.com. A person reads it, usually within two working days. See also the support page.