Which company makes an “E56” 300 mg quetiapine tablet?
An “E56” marking typically identifies a specific strength/formulation as dispensed or packaged by a particular manufacturer, but the manufacturer name can’t be confirmed from the code alone. To identify the exact maker, you need one of these:
- The full imprint (letters/numbers exactly as on the tablet), and whether it includes any other characters (for example, line breaks or an additional number)
- The country of labeling or the pharmacy label (often shows manufacturer/brand)
- A photo of the front and back of the tablet imprint
- The National Drug Code (NDC) on the bottle/box (best option)
If you share the exact imprint text (every character) and the NDC from the bottle, I can tell you which manufacturer corresponds to that specific “E56” 300 mg quetiapine product.
Is “E56” always quetiapine 300 mg, and is it the same everywhere?
Tablet imprints like “E56” are not universally standardized worldwide. The same imprint can be assigned to different products in different countries, and “300 mg quetiapine” could also refer to different formulations (for example, immediate-release vs extended-release), which may use different imprint codes.
How to quickly find the manufacturer from your pill bottle
Look on the bottle or carton for:
- NDC number
- Manufacturer name (labeled as “Manufactured for…” or similar)
- Lot number and expiration date
If you provide the NDC, I can map it to the manufacturer more reliably than imprint codes.
Do you mean quetiapine IR or XR?
“Quetiapine 300 mg” can be sold as different dosage forms depending on the market. The imprint usually reflects that dosage form, so manufacturer identification depends on knowing the exact product type on your label.
If you’re trying to verify safety (why imprint codes matter)
Quetiapine is a prescription medicine with dosing that must match the exact formulation. If the pill imprint does not match your prescription label or the bottle’s NDC, don’t take it until a pharmacist confirms it.
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Reply with the exact imprint as written on the tablet (including any line/extra characters) and the NDC from the bottle, and I’ll identify the manufacturer for that specific “E56” 300 mg quetiapine.