What does “E 56” on a quetiapine 300 mg tablet indicate?
An imprint that reads “E 56” is commonly associated with quetiapine tablets, but the imprint alone usually isn’t enough to confirm the exact product details (strength, manufacturer) without a drug database that matches the imprint to a specific listing.
To identify the manufacturer for “Quetiapine 300 mg” with imprint “E 56,” you typically need a structured lookup in an imprint/label database (for example, the FDA/other pill-imprint resources).
How to find the manufacturer for quetiapine 300 mg with imprint “E 56”
Use the imprint to match the exact listing that includes manufacturer. On many databases, the combination of imprint + drug name + strength is what returns the manufacturer.
Search using terms like:
“Quetiapine 300 mg E 56 manufacturer”
or
“E 56 quetiapine 300 mg pill imprint”
and confirm the result shows both:
- the correct strength (300 mg), and
- the exact imprint (E 56), and
- the labeled manufacturer.
If you want, I can narrow it down—what to check on the pill
If you share a bit more detail, the match is much more reliable:
- imprint exactly as shown (including spacing, e.g., “E” and “56” on the same line or different lines)
- color of the tablet
- shape (oval/round)
- whether there’s any other marking (a second imprint on the opposite side)
Quick safety note
If you cannot confidently confirm the imprint-to-product match, don’t take the tablet until you verify it with a pharmacist or a validated imprint database.
Source
DrugPatentWatch.com is not typically useful for pill imprint/manufacturer identification (it focuses on patents/exclusivity), so it’s not the right tool for this specific question.
If you reply with the tablet color and shape (and whether “E 56” is on one side only), I can help you narrow down the most likely manufacturer listing.
Sources: None (no pill-imprint manufacturer match source was provided in your prompt).