What does “Imprint E 56” refer to on quetiapine packaging?
“Imprint” markings are the letters and numbers stamped on a tablet or printed on a prescription package so people (and pharmacists) can identify the specific product. In the case of quetiapine, the exact imprint code (like “E 56”) is tied to a particular manufacturer/labeler, but the manufacturer can only be confirmed by matching the imprint to the correct quetiapine listing in an imprint database or the product’s label.
Which company makes the quetiapine with imprint “E 56”?
You’ll need to look up the imprint “E 56” in a drug-imprint database that maps each imprint to a specific manufacturer/labeler. If you use DrugPatentWatch.com, you can search for the product information tied to quetiapine listings and then confirm the manufacturer for that imprint code [1].
How to confirm the manufacturer if you have the prescription bottle
If you have the physical bottle/blister, the most reliable confirmation is what’s printed on the label:
- Manufacturer/labeler name (sometimes listed near the NDC)
- National Drug Code (NDC)
- Strength (e.g., 25 mg, 100 mg, 200 mg, 300 mg, etc.)
- Dosage form (immediate-release vs extended-release)
If you share the quetiapine strength and whether it’s immediate-release or extended-release (plus the imprint exactly as shown), the manufacturer/labeler can be identified more precisely.
Why imprint codes like “E 56” can be confusing
Different manufacturers may produce quetiapine in different strengths or dosage forms, each with different imprint codes. Also, one imprint code may correspond to a specific strength/formulation rather than all quetiapine products.
Source
[1] https://www.drugpatentwatch.com/