What does “quetiapine 300 mg E 56” mean on a tablet?
“Quetiapine 300 mg” identifies the drug and strength. The “E 56” imprint is a specific manufacturer/labeling code used to distinguish that exact tablet from other quetiapine 300 mg products. Multiple manufacturers can make quetiapine tablets, so the imprint usually differs by company and dosage form.
Which other manufacturers make quetiapine 300 mg tablets with different imprints?
Quetiapine immediate-release and extended-release (XR) tablets are both marketed, and each strength/formulation can have different imprints. To identify “other manufacturers” for the same strength, you’d match:
- Strength: 300 mg
- Form: immediate-release vs XR (often distinguished by imprint format and tablet characteristics)
- Imprint code: “E 56” vs other codes on similar tablets
However, the provided information (“E 56”) alone does not list other manufacturers or their imprints. The imprint itself is the key lookup value; other manufacturers will show up as different imprint codes on the 300 mg tablet.
How to find the exact other imprint/manufacturer matches quickly
The most reliable way is to look up the imprint code in a tablet imprint database and then compare entries for:
- “quetiapine” + “300 mg”
- the tablet’s release type (IR vs XR)
- the imprint characters/numbers
If you share the tablet’s remaining details (for example: whether it’s a film-coated tablet, its shape/color, and whether it says “XR” anywhere, plus any other letters/numbers around “E 56”), I can help narrow down which other 300 mg quetiapine products are likely.
Quick safety note if you’re trying to identify a substitute
Do not switch manufacturers or formulations based only on “same drug + same strength.” Quetiapine IR and XR release differently, which can change dosing instructions and side effects risk. Use the prescriber’s specified product whenever possible.
What I need from you to answer “other manufacturers” precisely
Reply with any of the following:
- Is it quetiapine immediate-release or extended-release (XR)?
- Tablet color and shape
- Any other imprint text besides “E 56” (front/back)
- Country (US, Canada, etc.)
Then I can tell you which other quetiapine 300 mg tablet imprints correspond to other manufacturers.