Does epinephrine expire?
The printed date covers the sealed pack. Once epinephrine is opened, mixed or diluted, its label sets a second and usually much shorter limit — quoted below, per product.
Shortest limit on any epinephrine label: 4 hours
“Adrenalin diluted in 5 percent dextrose solutions or 5 percent dextrose and sodium chloride solutions are stable for 4 hours at room temperature or 24 hours under refrigerated conditions.”
That applies to the product it is printed on, not to every form of epinephrine — check which one you have against the list below.
What the labels say
“Adrenalin diluted in 5 percent dextrose solutions or 5 percent dextrose and sodium chloride solutions are stable for 4 hours at room temperature or 24 hours under refrigerated conditions.”
On the label for Adrenalin · DailyMed
“Epinephrine injection diluted in 5 percent dextrose solutions or 5 percent dextrose and sodium chloride solutions are stable for 4 hours at room temperature or 24 hours under refrigerated conditions.”
On the label for EPINEPHRINE · DailyMed
How the label says to keep epinephrine
Storage is the other half of the question: the stability behind any date assumes these conditions, and a medicine kept outside them ages faster than the calendar says.
- “16 HOW SUPPLIED/STORAGE AND HANDLING Epinephrine Injection USP, 1 mg/10 mL (0.”
- “Protect from light until ready to use.”
- “Protect from freezing.”
- “Store at room temperature, between 20° to 25°C (68° to 77°F).”
- “Protect from alkalis and oxidizing agents.”
- “16 HOW SUPPLIED/STORAGE AND HANDLING Epinephrine Injection USP, 1 mg/mL is a sterile solution containing 1 mg/1 mL epinephrine in a clear glass ampule.”
- “16 HOW SUPPLIED/STORAGE AND HANDLING How Supplied Epinephrine Injection USP, 0.”
- “and Handling Protect from light.”
Frequently asked questions
Does epinephrine expire?
Two different clocks apply and only one of them is the printed date. The date on a sealed pack is the manufacturer's guarantee for the unopened product. Once it is opened, mixed or diluted, the label imposes its own limit — as tight as 4 hours on some epinephrine products, and that is the number quoted on this page.
Can I still use epinephrine after the date on the box?
This page cannot tell you that, and nor can any page. The FDA's own shelf-life programme found 88% of tested lots stayed within specification at least a year past expiry — and concluded in the same breath that lot-to-lot variation means this can only be confirmed by testing each lot. What you can check at home is the in-use limit above and whether the product has been stored as the label requires. Ask a pharmacist about a specific pack; they will also dispose of what you no longer need.
Why do different epinephrine products have different limits?
Because they are different formulations. A suspension that gets mixed with water, a pen that gets carried at room temperature, and a sealed tablet do not behave alike, so each manufacturer's label sets its own limit and each is shown here with the product it belongs to. We never merge them into one number for the molecule.
More on epinephrine
Quoted from FDA labels for reference, not medical advice, and not a suggestion to use anything past its limit. If you are unsure whether a pack is still good, a pharmacist can tell you and can dispose of it safely.