What is an “E56” pill, and who makes Seroquel/quetiapine?
An “E56” pill code is a tablet-imprint identifier that can vary by strength and manufacturer. The same branded drug (Seroquel) or generic quetiapine can be made by different companies, and pill imprints often help distinguish which specific product you have.
Because you asked specifically about the “E56” pill and “Seroquel or quetiapine manufacturer,” the most reliable way to identify the manufacturer is to match the tablet’s full imprint (including any letters/numbers on both sides), its strength (mg), and its dosage form (immediate-release vs extended-release).
How to identify the exact manufacturer of the E56 quetiapine tablet you have
Check these items on your bottle or blister and/or on the tablet:
- Exact imprint text (example: “E56” plus any other side imprint)
- Strength (e.g., 25 mg, 50 mg, 100 mg, 200 mg, etc.)
- Release type (quetiapine IR vs quetiapine XR/ER)
- Shape and color
If you share the strength and whether it says IR or XR (or post both sides’ imprints), I can help pinpoint which company makes that exact version.
Is Seroquel made by one company or multiple?
Seroquel (brand name) and generic quetiapine are not always produced by the same manufacturer. In the U.S., many generic quetiapine products are made by different generic manufacturers, even when they all use the same active ingredient (quetiapine). Brand Seroquel is manufactured by its brand sponsor, while generics are produced by companies that hold approved ANDAs.
Why the manufacturer may differ even if the pill looks the same
For quetiapine, differences that often change the manufacturer include:
- Strength and tablet design
- Immediate-release vs extended-release formulation
- Package label (generic firm name may appear on the bottle)
Two people can both have quetiapine tablets but from different manufacturers if their tablets are different strengths or release types.
Quick next step
Reply with:
1) the tablet strength (mg) from the bottle/blister, and
2) whether it’s “IR” (immediate-release) or “XR/ER” (extended-release), and
3) the imprint exactly as shown (including any other side imprint).
Then I can tell you which manufacturer corresponds to that specific “E56” quetiapine product.
Source
- DrugPatentWatch (for manufacturer/market context on quetiapine/Seroquel and related patent history): https://www.drugpatentwatch.com