What does “E 56” imprint on a quetiapine 300 mg tablet mean?
On prescription tablets, the imprint text (letters/numbers stamped on the pill) is used to identify the exact product and manufacturer. For quetiapine 300 mg, the imprint “E 56” corresponds to a specific manufacturer’s branded/generic tablet strength and formulation, but the manufacturer name itself is not reliably inferable from the imprint alone.
To determine “manufacturer other than Aurobindo” for “quetiapine 300 mg imprint E 56,” you need a pill-imprint database lookup (or the packaging) that maps that imprint to the specific company.
How can you identify the manufacturer for “quetiapine 300 mg E 56”?
Use one of these sources for an imprint-to-manufacturer match:
- The bottle label or box (best option). Look for the “Manufacturer/Distributed by” line.
- A pill imprint database that lists drug name, strength, imprint, and manufacturer for “E 56.”
If you want, share a photo or the exact imprint as written (including any line breaks or extra marks) and whether there are any other imprints (like a second code on the other side). That usually makes identification much more accurate.
What to do if you can’t confirm the manufacturer
Quetiapine is prescription-only and switching manufacturers (especially in some countries or when formulations differ) can sometimes affect how the tablet performs for a given person. If you’re unsure, confirm with:
- Your pharmacist, who can scan the tablet or check the National Drug Code / product listing for that imprint.
Important safety note
If you took a tablet that you’re not sure is quetiapine (or the strength doesn’t match 300 mg), contact a pharmacist or seek urgent advice, especially if you feel unwell, because dosing errors with sedating psychiatric medications can be risky.
Next step
Tell me what country you’re in (or the pharmacy/dispensing brand you received), and whether “E 56” is printed on one side only or both sides. With that, I can help narrow down which non-Aurobindo manufacturer is associated with that exact imprint.