Does bendamustine expire?
The printed date covers the sealed pack. Once bendamustine is opened, mixed or diluted, its label sets a second and usually much shorter limit — quoted below, per product.
Shortest limit on any bendamustine label: 2 hours
“Sodium Chloride Injection, USP, the final admixture is stable for 24 hours stored under refrigerated conditions at 2°C to 8°C (36°F to 46°F) or for 2 hours when stored at room temperature (15°C to 30°C or 59°F to 86°F) and room light.”
That applies to the product it is printed on, not to every form of bendamustine — check which one you have against the list below.
What the labels say
“Sodium Chloride Injection, USP, the final admixture is stable for 24 hours stored under refrigerated conditions at 2°C to 8°C (36°F to 46°F) or for 2 hours when stored at room temperature (15°C to 30°C or 59°F to 86°F) and room light.”
On the label for TREANDA · DailyMed
“Sodium Chloride Injection, USP, the final admixture is stable for 24 hours when stored refrigerated (2°C to 8°C or 36°F to 46°F) or for 3 hours when stored at room temperature (15°C to 30°C or 59°F to 86°F) and room light.”
On the label for Bendamustine Hydrochloride · DailyMed
“Sodium Chloride Injection, USP, the final admixture is stable for 24 hours stored under refrigerated conditions at 2°C to 8°C (36°F to 46°F) or for 3 hours when stored at room temperature (15°C to 30°C or 59°F to 86°F) and room light.”
On the label for bendamustine hydrochloride · DailyMed
“Sodium Chloride Injection, USP, the final admixture is stable for 24 hours stored under refrigerated conditions at 2° to 8°C (36° to 46°F) or for 3 hours when stored at room temperature (15° to 30°C or 59° to 86°F) and room light.”
On the label for Bendamustine · DailyMed
“Sodium Chloride Injection, USP, the final admixture is stable for 24 hours when stored refrigerated (2° to 8°C or 36° to 46°F) or for 3 hours when stored at room temperature (15° to 30°C or 59° to 86°F) and room light.”
On the label for BENDAMUSTINE HYDROCHLORIDE · DailyMed
“In the event that 5% Dextrose Injection, USP is utilized, the final admixture is stable for 24 hours when stored refrigerated (2°C to 8°C or 36°F to 46°F) or for only 3 hours when stored at room temperature (15°C to 30°C or 59°F to 86°F) and room light.”
On the label for Bendeka · DailyMed
“Sodium Chloride Injection, USP, the final admixture is stable for 24 hours when stored refrigerated (2°C to 8°C or 36°F to 46°F) or for 6 hours when stored at room temperature (15°C to 30°C or 59°F to 86°F) and room light.”
On the label for Bendeka · DailyMed
“The partially used vials are stable for up to 28 days when stored in its original carton under refrigeration (2°C to 8°C or 36°F to 46°F).”
On the label for Bendamustine Hydrochloride · DailyMed
“After first use, store the partially used vial in original carton at 2°C to 8°C (36°F to 46°F), and then discard after 28 days.”
On the label for Bendamustine Hydrochloride · DailyMed
“After first use, store the partially used vial in the original carton at 2°C to 8°C (36°F to 46°F) and then discard after 28 days.”
On the label for VIVIMUSTA · DailyMed
“The partially used vials are stable for up to 28 days when stored in its original carton under refrigeration (2° to 8°C or 36° to 46°F).”
On the label for BENDAMUSTINE HYDROCHLORIDE · DailyMed
“After first use, store the partially used vial in original carton at 2° to 8°C (36° to 46°F), and then discard after 28 days.”
On the label for BENDAMUSTINE HYDROCHLORIDE · DailyMed
How the label says to keep bendamustine
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 Safe Handling and Disposal Bendamustine hydrochloride injection is a hazardous drug.”
- “Store bendamustine hydrochloride injection in refrigerator, 2ºC to 8ºC (36ºF to 46ºF).”
- “Retain in original carton until contents are used to protect from light.”
- “Store bendamustine hydrochloride injection at recommended refrigerated storage conditions (2°C to 8°C or 36°F to 46°F).”
- “When refrigerated the contents may freeze.”
- “Retain the partially used vial in original package to protect from light and store refrigerated (2°C to 8°C or 36°F to 46°F) if additional dose withdrawal from the same vial is intended.”
- “After first use, store the partially used vial in original carton at 2°C to 8°C (36°F to 46°F), and then discard after 28 days.”
- “16 HOW SUPPLIED/STORAGE AND HANDLING Safe Handling and Disposal Bendamustine hydrochloride is a hazardous drug.”
Frequently asked questions
Does bendamustine 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 2 hours on some bendamustine products, and that is the number quoted on this page.
Can I still use bendamustine 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 bendamustine 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 bendamustine
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.