What does “E 56 imprint” mean for quetiapine tablets?
An “E 56” imprint is used by tablet manufacturers to identify a specific drug product and strength. Imprint codes are tied to the manufacturer and formulation, so the same imprint may appear on quetiapine tablets made by a particular company at a particular time.
Which quetiapine manufacturer makes the “E 56” tablets besides Aurobindo?
I can’t determine the manufacturer tied to the “E 56” imprint from the information provided (and the exact imprint-to-company mapping can vary by strength, tablet design, and time of production).
To identify the non-Aurobindo manufacturer for “E 56” quetiapine, you’ll need one of these:
- The tablet strength shown on the bottle (e.g., 25 mg, 50 mg, 100 mg, 200 mg, etc.)
- A clear photo of the tablet showing both sides of the imprint
- The National Drug Code (NDC) number from the prescription label or bottle
- The exact wording on the bottle/manufacturer section
If you share the strength (and ideally the NDC or a photo), I can help pinpoint the manufacturer other than Aurobindo.
How can you quickly check the manufacturer on your prescription?
On most quetiapine bottles, the manufacturer name and/or NDC appears on the label. Look for:
- “Manufacturer” (or “Dispensed by” / “Distributed by”)
- NDC (usually formatted like 5 digits–4 digits–2 digits)
If you tell me the NDC number, I can identify which company made that specific product.
Does this change with tablet strength or “ER” vs immediate-release?
Yes. Quetiapine comes in different formulations (for example, immediate-release vs extended-release), and the imprint-to-manufacturer mapping is different across strengths and release types. So the strength and whether it says anything like “XR” (on the bottle or tablet) matter.
If you’re trying to avoid a specific manufacturer, what’s the safest next step?
Ask your pharmacist to confirm:
- Which manufacturer is on your specific dispensed lot (using the NDC)
- Whether they can dispense an alternative manufacturer if medically appropriate and available
- Whether the tablets are the same strength and release type as your prescription
Sources
No sources were provided in the prompt, and I don’t have enough data to reliably map “E 56” to a specific manufacturer without the tablet strength or NDC.