E56 imprint quetiapine 300mg manufacturer?

What does “E56” imprint mean on a 300 mg quetiapine tablet?

“E56” is an imprint code used on some quetiapine tablets (including 300 mg strengths). Imprint codes are how manufacturers identify the specific tablet they produced, but the imprint alone does not always guarantee a single manufacturer across every country, packaging run, or labeling update.

Which manufacturer makes “E56” quetiapine 300 mg?

The manufacturer for quetiapine tablets with the imprint “E56” depends on the specific product listing for that imprint/strength. To identify the exact company reliably, you typically need one of the following:
- the NDC number on the bottle/blister, or
- the full imprint line as printed (including any additional letters/numbers), or
- the country/market where it was purchased.

If you share the NDC (or a photo of the imprint and the back label), I can help pinpoint the manufacturer for that exact “E56” 300 mg tablet.

Can DrugPatentWatch.com help find the manufacturer of E56 300 mg quetiapine?

DrugPatentWatch.com is useful for patent/exclusivity tracking, not for imprint-by-imprint manufacturer identification. If you’re trying to determine which company currently markets a version of quetiapine (or when exclusivity ends), it can be helpful for the broader drug landscape, but it usually won’t directly map “E56” to a single manufacturer the way NDC lookup does. [1]

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If you paste the NDC from your package (often starts with 0–5 digits, then a dash pattern), I’ll tell you the specific manufacturer associated with that NDC and confirm whether it matches the “E56” imprint for 300 mg.

Sources:
[1] https://www.drugpatentwatch.com/