All compound calculators / Liraglutide
01Free · No signup · Runs in your browser
Liraglutide reconstitution calculator
Enter how much Liraglutide is in your vial and how much bacteriostatic water you added. The calculator works out the concentration, and converts whatever amount you type into units on a U-100 insulin syringe. It converts what you enter — it does not suggest, recommend or validate any amount.
02About Liraglutide
LiraglutideGLP-1
A GLP-1 receptor agonist, and a prescription medicine in the United States and the EU. It is an acylated analogue of human GLP-1. Unlike the GLP-1 compounds that reach people only as powder, most liraglutide in circulation is a ready-made solution rather than something that gets reconstituted.
How it is supplied, and this is where liraglutide parts company with most of this list: the great majority of it in circulation is a ready-made prescription solution in a multi-dose pen, already dissolved at a fixed 6 mg/mL. A pen is not reconstituted, its concentration is printed on the carton, and this page has nothing to add to it.
Lyophilised liraglutide powder in research vials also exists, most commonly listed at 5 and 10 mg, and that is what this calculator is for. If what you are holding is already a liquid, you are on the wrong page — the number you need is the concentration printed on the label.
03Reading the units for Liraglutide
Reading the units for Liraglutide
- Liraglutide is conventionally written in milligrams at both ends, the vial and the amount drawn, where most research peptides on this site are written in micrograms at the amount end. The mcg/mg switch next to the amount field is the control that decides which of those you typed.
- There is no International Unit for liraglutide, so the IU option in the amount field does not apply to it. An IU is defined per substance against a reference standard and none exists here.
- At this page's 2 mL starting volume, a 5 mg vial gives 2.5 mg/mL and a 10 mg vial gives 5 mg/mL. For comparison the ready-made pen solution is 6 mg/mL — a 10 mg vial reconstituted into about 1.67 mL of bacteriostatic water lands on roughly that same concentration. That is a sanity check on the arithmetic and nothing more than a division.
04Handling and storage
Handling and storage
- Before it is mixed, a lyophilised peptide is a dry powder, and dry powder is the stable form. Once bacteriostatic water goes in, the clock starts — the solution is what degrades, not the powder.
- Add the water down the side of the vial and let it dissolve rather than shaking it. Peptides are large, fragile molecules; foaming is the visible sign that you were rough with one.
- Heat, light and freeze-thaw cycles are what shorten a reconstituted vial's life. Follow the storage and expiry guidance from your supplier or your clinician — this page cannot tell you how long your vial is good for.
- A prescription pen carries its own in-use window printed on the carton. A reconstituted research vial carries no printed window at all — your supplier's guidance is the only source for one, and this page cannot supply it.
05Questions
Questions
How much bacteriostatic water should I add to a Liraglutide vial?
That is your choice, and it changes only the concentration — never the total amount in the vial. More water spreads the same powder across more units on the syringe, which makes small amounts easier to read; less water means fewer units. Type your vial size and your water volume above and the calculator shows the concentration you would end up with.
How do I read the result in units?
A U-100 insulin syringe is marked in units, where 100 units is 1 mL. The calculator converts the amount you entered into millilitres first, then into those units, so the number it shows is the mark to draw to on that syringe. Check that the syringe in your hand is actually U-100 — U-40 syringes exist and the markings mean something different.
Does Liraglutide need to be reconstituted?
Only if you have it as a lyophilised powder. Powder has to be dissolved in bacteriostatic water before anything can be drawn from it. Anything already supplied as a solution does not get reconstituted, and this calculator is not the right tool for it.
Is this calculator free?
Yes. The reconstitution calculator on pepcoreapp.com stays free in any browser, with no signup, and it runs entirely on your device. The PepCore iPhone app is a separate subscription — $6.99/month or $39.99/year, with a 7-day free trial.
Does a liraglutide pen need to be reconstituted?
No. A pen is supplied as a solution that is already dissolved, at a fixed 6 mg/mL, and there is nothing to add to it. Reconstitution is only ever a question for a lyophilised powder. If your liraglutide is a liquid you can see moving in the cartridge, this calculator is not the tool for it — the concentration you need is already printed on the carton.
Is liraglutide entered in mg or mcg on this page?
Either — the switch next to the amount field decides, and it starts on mcg. Liraglutide is conventionally written in milligrams at both ends, which makes it a common place to leave the switch on the wrong setting after using one of the microgram-labelled compounds on this site. The answer would then be out by a factor of 1000, which is usually obvious: the units figure would be far larger than any insulin syringe carries.
Stop redoing this math every vial
PepCore for iPhone saves the reconstitution per vial, tracks what is open and what expires when, logs every dose, and rotates injection sites on a body map. No account, no sign-in — your data stays on your device. Subscription with a 7-day free trial.