Vial duration

Liraglutide vial duration calculator

Estimate how many weeks one 6 mg Liraglutide vial covers at your dose and weekly cadence.

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Last updated: May 13, 2026

Vial (mg)

Dose (mg)

Doses / week

Total doses

Lasts

0.7 weeks

Liraglutide weeks-of-supply at common cadences

How long one 6 mg Liraglutide vial covers at a 1.2 mg per dose, for three weekly cadences. Total doses per vial: 5.

Doses per week	Total doses per vial	Weeks of supply
6	5	0.8
7	5	0.7
8	5	0.6

Math weeks-of-supply assumes every dose draws cleanly. Stability typically caps a reconstituted vial at 4–6 weeks of refrigerated use regardless of how much liquid remains.

Worked example

How long one Liraglutide vial lasts, the long version

Total doses in the vial: floor(6 ÷ 1.2) = 5. The floor matters — a partial dose at the bottom doesn't count.
Cadence: 7 doses per week for Liraglutide at this example step.
Math weeks-of-supply: 5 ÷ 7 = 0.7 weeks of liquid in the vial.
Stability ceiling: most reconstituted peptides are typically used within 4–6 weeks of refrigerated storage. Whichever number is smaller is the one that binds your refill date.
Doubling the dose roughly halves both numbers — and titration usually closes the gap between "math weeks" and "stability weeks" without you noticing.

Scenarios people actually run into

Three things that come up logging Liraglutide

Math says one 6 mg Liraglutide vial covers 0.7 weeks at 1.2 mg per dose. Stability typically caps a reconstituted vial at 4–6 weeks. Whichever number is smaller is the date on your refill calendar.
Titration up doubles the dose and halves the vial. A 12-week-on-paper vial becomes a 6-week vial the day you step up — order the next vial the same day you take the step.
Shipping windows are the silent third constraint. If your supplier runs 1–3 weeks, the refill order has to leave at least that long before "math weeks" or "stability weeks," whichever is binding.

Same-category neighbor

Liraglutide next to Semaglutide

Both sit in the GLP-1 bucket — here's the vial duration math side by side on each one's example vial.

	Liraglutide	Semaglutide
Vial	6 mg	5 mg
Cadence	7/wk	1/wk
Weeks of supply	0.7	20.0

Want the full breakdown? Semaglutide reference →

Liraglutide is a modified version of a hormone your gut naturally produces called GLP-1, which is involved in appetite and blood sugar. People use it to support weight management and help regulate blood sugar levels, often in conjunction with diet and exercise. Studies, such as the SCALE trial, reported that participants using Liraglutide saw a greater reduction in body weight compared to a placebo group. This page explains what Liraglutide is, how people use it, and how to track a daily dosing protocol in the Peptide Pilot app.

Planning Liraglutide vials in real life

Liraglutide is the only daily GLP-1 in widespread use, and that single property — daily versus weekly — changes everything about vial planning. A 6 mg vial that lasts 5 weeks for a weekly peptide lasts 5 days for liraglutide. Most users buy in 4-vial or 6-vial packs precisely because the 30-day refill rhythm needs that many to stay smooth.

Stability is friendlier than the math suggests. A reconstituted liraglutide vial is typically used within 4 weeks of refrigerated storage — and at daily 1.2 mg doses, a 6 mg vial empties in 5 days, well inside that window. The constraint here is supply rather than stability. Plan vial counts around your titration target, not your starter dose.

Storage and shelf life for Liraglutide

Proper storage of Liraglutide is critical to maintain its effectiveness. Before you mix it, the lyophilized (powdered) form should be stored in the refrigerator, typically between 36°F to 46°F (2°C to 8°C). It’s important to keep it away from the freezer compartment, as freezing can damage the peptide molecule. You should also protect it from light by keeping it in its original box or a dark container. Unreconstituted vials stored this way are stable for a long time, and you can usually find the specific expiration date printed on the vial or its packaging. Following these guidelines ensures that the peptide is at its full potential when you are ready to prepare it for your protocol.

Once you reconstitute the Liraglutide powder with bacteriostatic water, the storage rules change slightly, and the clock starts ticking on its shelf life. The mixed solution must be kept in the refrigerator, just like the powder. Do not ever freeze reconstituted Liraglutide. After its first use, a reconstituted vial or a pre-filled pen is typically good for about 30 days when stored properly in the fridge. It’s always a good practice to write the date of reconstitution on the vial itself so you can keep track. Over time, the peptide will slowly degrade in the solution, losing its potency. Using it beyond the recommended window might mean you are not getting the dose you think you are, so it's wise to discard any remaining solution after about a month.

How the Liraglutide vial duration calculator works

A 6 mg liraglutide vial covers 5 days at the 1.2 mg dose step. That's it — daily dosing burns through vials fast. At 3 mg (the weight-management target), one vial is 2 days. Refill cadence is more like a prescription refill than a monthly order.

The formula is two divisions. Total doses per vial equals vial mg divided by dose mg, rounded down. Weeks of supply equals total doses divided by doses per week. With a 6 mg vial of Liraglutide, a 1.2 mg dose, and 7 dose per week, the vial covers 5 doses, or about 0.7 weeks of supply.

The three inputs that move the answer: vial mg (set when you bought the vial), dose mg (set by your protocol step), and doses-per-week (set by the peptide's half-life). Once a vial is reconstituted it also has a stability ceiling — most lyophilized peptides reconstituted in BAC water are typically used within four to six weeks of refrigerated storage, so a vial that mathematically lasts twelve weeks may not last twelve weeks in practice.

One practical question that comes up when starting a peptide protocol is, “How long will my vial last?” This calculator is designed to give you a clear answer based on your specific vial and dosing plan. Knowing your vial’s duration helps with planning your future purchases and ensures you don’t run out unexpectedly, which is especially important for a daily peptide like Liraglutide where consistency is key. To use it, you’ll enter the total amount of peptide in the vial, the dose you plan to take, and how many doses you administer per week. The calculator then projects how many days or weeks of injections your vial will provide.

Let’s apply this to our ongoing Liraglutide example. You have a 6 mg vial and are taking 7 doses per week (once daily). If you are on a maintenance dose of 1.2 mg per day, the calculation would be straightforward. You would get a total of 5 full doses from the vial (6 mg total ÷ 1.2 mg/dose = 5 doses). In this scenario, your vial would not even last a full week. This highlights how quickly Liraglutide can be depleted, especially at higher doses. If your daily dose was the starting 0.6 mg, the vial would provide 10 doses (6 mg ÷ 0.6 mg/dose), lasting you a week and a half.

The titration schedule is a major factor in how long your first vial lasts. At the beginning of a protocol, when your doses are low, a single vial will last much longer than it will when you reach your higher maintenance dose. For instance, a 6 mg vial would cover the first week at 0.6 mg/day (4.2 mg used) and leave a small amount for the beginning of the next week. This calculator is particularly useful for forecasting how your peptide supply will be consumed as you step up your dose. It allows for better financial planning and helps you time your re-orders, ensuring a smooth and uninterrupted protocol.

Common Liraglutide vial-planning mistakes

Miscalculating the dose when reconstituting a vial.
Using the peptide past its 30-day expiration after reconstitution.

Frequently asked questions about Liraglutide vial duration

How does the Liraglutide vial duration calculator estimate weeks of supply?

It floors total doses (vial mg ÷ dose mg) then divides by doses per week. For this Liraglutide example — a 6 mg vial, 1.2 mg per dose, 7 dose/week — that's floor(6 ÷ 1.2) ÷ 7 = about 0.7 weeks. Flooring matters: a partial dose left in the vial doesn't count. Liraglutide users typically order 4-6 vials per refill cycle to avoid the daily refill anxiety smaller orders create.

Should I plan refills around the math, or around stability?

Whichever runs out first. Math says Liraglutide at the example dose lasts the calendar weeks shown above. Stability says most reconstituted peptides are typically used within 4–6 weeks of refrigerated storage regardless of how much liquid is left. If the math says 12 weeks but stability caps at 5, plan around 5 — and reconstitute the next vial with less water so you finish it in the stability window. Liraglutide users typically order 4-6 vials per refill cycle to avoid the daily refill anxiety smaller orders create.

Does titrating the Liraglutide dose up shorten vial life?

Yes, often dramatically. Doubling the dose halves the doses-per-vial. The calculator shows real-time how a step-up changes the weeks-of-supply line, so you can re-time refill orders before a titration event rather than discovering the gap mid-protocol. Liraglutide users typically order 4-6 vials per refill cycle to avoid the daily refill anxiety smaller orders create.

What if I take Liraglutide less often than the default cadence here?

Drop the doses-per-week field. With 7 dose/week the example vial lasts about 0.7 weeks; halving the cadence roughly doubles that, but you'll hit the stability ceiling first. A vial that mathematically covers 16 weeks rarely covers 16 weeks in practice. Liraglutide users typically order 4-6 vials per refill cycle to avoid the daily refill anxiety smaller orders create.

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