It sounds like you're wondering why a product doesn't have an expiry date listed.

Some products may not have an expiry date if they are considered stable for a very long time or if they are regulated differently. However, most medical or health-related products should have an expiration date to ensure safety and effectiveness. If the product is a medication, supplement, or medical device, the absence of an expiry date could be a concern.

I recommend checking with the pharmacist or the manufacturer for clarification. If this is related to a medication or health product, consulting a doctor or pharmacist is the best step to ensure safe use.