Does cisatracurium expire?
The printed date covers the sealed pack. Once cisatracurium is opened, mixed or diluted, its label sets a second and usually much shorter limit — quoted below, per product.
Shortest limit on any cisatracurium label: 21 days
“Upon removal from the refrigeration, use within 21 days even if re-refrigerated.”
That applies to the product it is printed on, not to every form of cisatracurium — check which one you have against the list below.
What the labels say
“Upon removal from the refrigeration, use within 21 days even if re-refrigerated.”
On the label for Cisatracurium Besylate · DailyMed
How the label says to keep cisatracurium
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.
- “Refrigerate cisatracurium besylate injection, USP at 2° to 8°C (36° to 46°F) in the carton to preserve potency.”
- “Protect from light.”
- “Upon removal of the unused vial from refrigeration to room temperature storage conditions (25°C/77°F), use cisatracurium besylate injection, USP within 21 days, even if re-refrigerated.”
- “Store cisatracurium besylate injection with the cap and ferrule intact and in a manner that minimizes the possibility of selecting the wrong product (2.”
- “Store these diluted cisatracurium besylate injection solutions either in a refrigerator or at room temperature for 24 hours without significant loss of potency.”
- “Store this diluted cisatracurium besylate injection solution under refrigeration for no more than 24 hours.”
- “Refrigerate Cisatracurium Besylate Injection, USP at 2° to 8°C (36° to 46°F) in the carton to preserve potency.”
- “Store cisatracurium besylate injection with the cap and ferrule intact and in a manner that minimizes the possibility of selecting the wrong product ( 2.”
Frequently asked questions
Does cisatracurium 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 21 days on some cisatracurium products, and that is the number quoted on this page.
Can I still use cisatracurium 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 cisatracurium 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 cisatracurium
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.