Health · official-source review · reviewed 2026-10-10
An opened medicine keeps its printed date, and the opened date can end months earlier.
Compare the printed expiry date with the label's months-after-opening rule, and mark the date to use first.
Anyone organizing a home medicine cabinet after opening a new package.
Use the source document or official route that applies to your situation. This guide does not contact another person or verify external information.
Find the printed expiry date and the months-after-opening rule on the package.
Write the open date on the package with a marker when you open it.
Compute the discard date from the open date. Then compare it with the printed date.
Write the earlier date on the package. Use that date as the household rule.
Store medicines as the label says. Use a take-back option for disposal when one is available.
You open a package on 2026-10-01 with a 6-month rule and a printed date of 2027-01-15. The date to use first is the printed date, 2027-01-15.
Use your own source and details. The example is not a record about a real person or organization.
U.S. Food and Drug Administration · reviewed 2026-10-10
What this source supports: Patients should plan refills ahead of time to avoid running out of essential medications over weekends and holidays.
Source limit: Pharmacy lead times vary; call your pharmacist well before you run out.
These sources support the statements above. They do not show that every person needs this guide. They do not show a specific result.
This guide compares two dates from the package in your hand. It does not judge a medicine's safety or condition.
Pharmacy lead times vary; call your pharmacist well before you run out.
Use current instructions from the responsible organization. This guide is a planning aid, not an official decision or a substitute for qualified advice.
Compare the printed expiry date with the label's months-after-opening rule, and mark the date to use first.
This App compares two dates from the package in your hand. It does not judge a medicine's safety or condition.
You enter every number yourself. The sources support the method and the limits. They do not produce a result for your specific case. Keep the original documents next to the sheet you build.
The App computes the worked example with your own numbers, in your browser.
APP 1
Compare the printed expiry date with the label's months-after-opening rule, and mark the date to use first.
Free · no account · no upload
Open Opened-Medicine Discard Date CheckThe App runs in this browser. It does not send or save entries. Copy, download, or print only when you choose.
This guide uses short, direct instructions as an ASD-STE100-style writing target. It is not a formal certification.
Companion App: Opened-Medicine Discard Date Check. It runs in this browser and does not upload your entries.
This guide is edited for clarity and checked against the sources it links. It is not a substitute for official instructions or qualified advice. A linked source does not show that every person needs this guide.