Pindrop

Medication Storage Calculator

How long a medication keeps once it is opened or reconstituted, refrigerated or at room temperature, with the actual date to discard it by.

Stored

Discard by

Fri, September 11, 2026

56 days remaining in a 56-day window

Storage note. 56 days after first use regardless of storage. Keep below 86°F (30°C) at room temp.

What this calculator does

A sealed vial and a punctured one are two different clocks. Once a medication is opened or reconstituted, its usable life is measured in days or weeks, and it depends on whether you keep it in the fridge or at room temperature. This calculator holds the common guidelines for GLP-1 pens, testosterone vials, HCG, and reconstituted peptides, and turns them into a real date.

Pick the medication, the day you opened or mixed it, and how you store it. The result is the date to discard by and how many days are left. Some products, like oil-based testosterone, do not have a fixed post-opening window and instead follow the printed expiry; the calculator says so rather than inventing a number.

Reading the result

The discard date is the headline. The counter turns to a warning inside the last week and flips to expired once the date has passed. Every entry carries a storage note with the specifics, like keeping single-dose pens out of the fridge once they warm up. These are general shelf-life guidelines; your pharmacy label and product insert always win when they disagree.

Common questions

How long does reconstituted semaglutide or tirzepatide last?
Compounded, self-mixed versions are commonly used within about 28 days when kept refrigerated, though it varies by source and diluent. Brand pens have their own limits set by the maker. When in doubt, go by the shorter timeframe and watch for cloudiness or color change.
How long can Ozempic stay out of the fridge?
After first use, an Ozempic pen can sit at room temperature up to 86°F or stay refrigerated for 56 days, then you discard it. Before first use, keep it in the fridge. Mounjaro has different rules, so check its own label instead of assuming they match.
How long can Mounjaro be left out of the fridge?
Mounjaro is different from Ozempic, so do not assume they match. Its pens and vials are commonly cited as good at room temperature, up to 86°F, for around 3 weeks, then you use or toss them, with the fridge as the default before that. Because these limits change by product and version, follow the exact time on your carton.
How long do reconstituted peptides last?
Once mixed with bacteriostatic water and refrigerated, most peptides are commonly used within 2 to 4 weeks, and some hold longer. The benzyl alcohol in bac water is what buys you that time. Keep them cold, out of light, and do not freeze unless the peptide is known to handle it.
How long is HCG good after mixing?
Reconstituted HCG kept in the fridge is commonly considered usable for about 30 to 60 days. Keep it cold and do not freeze it. Potency fades gradually, so use it sooner rather than letting it sit.
Does testosterone need to be refrigerated?
No. Testosterone in oil is stable at room temperature and does not need the fridge, just keep it out of direct heat and light. If it gets cold and turns cloudy, warming the vial in your hands clears it. Cold storage can actually make the oil thick and harder to draw.

Pindrop is a calculation tool, not medical advice. Confirm your dose and protocol with a licensed healthcare provider.