What does an “E56” imprint mean on a 300 mg quetiapine (Seroquel) tablet?
An “E56” pill imprint is used to identify a specific solid-dose product (by manufacturer/labeler and strength). The same strength of quetiapine can exist in multiple products made by different companies, and the imprint is how pharmacists and patients distinguish them.
To identify the manufacturer tied to the exact “E56” imprint and 300 mg strength, you’d need a pill database match for “E56” + “300 mg” + “quetiapine.” The most reliable way to confirm the manufacturer from the imprint is to check a live pill-imprint lookup for that exact imprint and strength.
How can I find the manufacturer for “E56” 300 mg quetiapine?
Use one of these approaches:
- Look up the pill imprint “E56” specifically and confirm it matches “quetiapine 300 mg” (not just “E56” alone).
- Check the full imprint (including any letters/numbers on both sides) and the tablet shape/color, because pill databases often require all those details to avoid mismatches.
- If you have the original prescription bottle, the manufacturer may also be listed there.
What should I check on the pill to avoid mixing up similar imprints?
Before relying on any imprint lookup, confirm:
- The imprint exactly as printed (E56 is common, but other imprints can be similar).
- The tablet strength (300 mg) and dosage form (immediate-release vs extended-release).
- Tablet color and shape (databases use these to disambiguate).
If you tell me the tablet’s color, shape, and whether the imprint is on one side or both, I can help narrow down what product “E56” most likely corresponds to.
Is “Seroquel” the same as quetiapine 300 mg?
“Seroquel” is a brand name for quetiapine. Other quetiapine products can have different imprints, even at the same 300 mg strength, because generics may come from different manufacturers and product configurations.
Quick safety note
Quetiapine products can include different release types (immediate-release vs extended-release), and switching between products can change dosing behavior. Make sure the imprint match is correct before taking the tablet as a substitute for a different quetiapine product.
If you share the pill’s color/shape and any imprint on the other side, I’ll help you pinpoint the manufacturer associated with the “E56” 300 mg quetiapine imprint.