Start with the words on the blister pack: find the medicine name, strength and form, then look for the expiry wording and batch or lot number. Before opening a pocket, find any printed opening words, arrow, tab or diagram and read the matching instruction on the carton or leaflet. The foil may carry only part of this information, so keep the supplied pieces together when checking a detail.
Which words identify the medicine?
Read the complete printed name, strength and form together. The brand name and active-ingredient name may both appear, and their order can vary. Compare the blister with its carton and dispensing label. NHS Specialist Pharmacy Service guidance on label design emphasizes clear medicine identification and explains why color or appearance alone is an unreliable guide.
For example, the fictional line "Example Medicine - 5 mg - tablets" contains a name, a strength and a form. The "5 mg" describes the product strength; it does not tell a particular person how much or how often to take it. If you have only a cut-off strip and cannot read its full name, use the complete supplied pack or ask the dispensing pharmacist to identify it.
What do medicine blister pack labels mean?
Look for a short word or abbreviation beside each number before interpreting it. The table below separates identification, date, batch and opening information. Some details may appear only on the carton or leaflet. As one regional example, UK rules for blister-pack labeling specify fields that include product identity, strength/form, expiry and batch number; layouts differ across products and markets.
| Marking or wording | How to interpret its role |
|---|---|
| Medicine name, strength and form | Identification details to match with the carton and dispensing label. Strength is not the personal dosing instruction. |
| EXP, expiry date or similar date wording | The date-related information for that product. Read the accompanying wording and supplied instructions. |
| Batch or lot number | A production identifier. Read it as a separate field from the expiry date. |
| Opening text, arrow or numbered diagram | A prompt to find and follow that presentation's specific opening instructions. |
| Storage statement or leaflet reference | Look for the exact direction on the carton, label or leaflet. NHS storage guidance advises following the instructions for the individual medicine. |
A small strip may not show the whole name or every date detail. MHRA's July 2026 guidance, section 6 discusses repeated foil information and batch/expiry details at strip ends. Read the full strip and its matching carton when a single pocket leaves a field incomplete.
How can you tell expiry from batch?
Read the word next to the code. "EXP" or other expiry wording points to a date; "batch" or "lot" identifies a production batch. A batch code can contain both letters and numbers, so a string of digits alone is not enough to tell you which field you are reading.
Date formats and accompanying words matter. NHS guidance on medication expiry dates explains that a month-and-year date can be interpreted differently depending on its wording. A separate pharmacy-applied use or discard instruction may also be present. Read both labels in context, and ask the pharmacist when the printing is faint or its meaning is unclear.
How do you follow the opening instruction?
First find the complete opening direction on the pack, carton or leaflet. "Push through" points to pressure from the pocket side; "peel" points to lifting a designated tab or corner. Arrows and numbered pictures may show the order of steps. Match the symbol to its words before acting, because one arrow by itself may not explain the whole sequence.
Opening designs vary. NHS SPS guidance on difficulty opening blister or foil packs notes that some packs are peelable and recommends pharmacy advice when opening is difficult. If you cannot find the starting point or the printed method does not work for you, show the supplied pack to the pharmacist and ask for a demonstration or suitable assistance.
A quick reading check
- Match: Read the full name, strength and form with the carton and dispensing label.
- Locate: Find expiry wording and the batch/lot identifier as separate details.
- Follow: Read the pack-specific opening instructions and any storage directions.
- Clarify: Take the supplied pack to the dispensing pharmacist when a word, date or opening step is unclear.
The medicine blister pack label gives you clues to what product is in the pack, how its dates and codes are marked, and where to find its opening method. For a question about your particular medicine or personal directions, use the supplied dispensing information and ask a pharmacist or prescriber.
For teams developing medicine packaging
SED Pharma provides a manufacturing-side view of blister presentations. Packaging teams can explore the blister packing equipment range or share a de-identified pack layout and intended presentation for an initial equipment discussion. Medicine-specific label or opening questions should go to the dispensing pharmacy.
SED Pharma tablet blister packaging equipment.
Optional background for manufacturing readers: equipment basics and the oral solid dosage production line overview.