What does “E56” mean on an Aurobindo quetiapine tablet imprint?
On many drug tablets, the imprint code combines the company/product identifier with a strength or formulation marker. For Aurobindo specifically, “E56” is used on certain quetiapine tablet presentations as the imprint that identifies that particular product/strength within their manufacturing and labeling system.
Because imprint codes can vary by strength (and sometimes by dosage form), the imprint alone usually isn’t enough to confirm the exact drug strength or whether two products are truly the same formulation unless you also match:
- the drug name (quetiapine)
- the exact imprint (including letters/numbers)
- the strength (e.g., 25 mg, 50 mg, 100 mg, etc.)
- the dosage form (immediate-release vs extended-release)
Which manufacturers make quetiapine tablets with the same imprint?
“Same imprint” typically implies the same labeled product—same company’s product identifier tied to that imprint. If two tablets show the same imprint code (down to the exact characters), they are generally intended to be interchangeable at the product-identification level (same imprint = same specific manufacturer product).
That said, if you mean “other manufacturers’ tablets that look similar and may feel the same,” then the practical way to check is to compare the National Drug Code (NDC) from the package/pharmacy label or the full imprint + strength.
How to tell if Aurobindo quetiapine E56 is truly the same as another brand or generic
Use these checks in order:
1. Confirm the strength (mg) on the bottle.
2. Confirm the dosage form (immediate-release vs extended-release).
3. Compare the imprint exactly to the other tablet.
4. If you can, compare the NDC number printed on the bottle label.
If the imprint and strength/dosage form match, the tablets are usually the same drug product presentation even if the brand name differs. If imprint differs, the other product is likely a different manufacturer’s listing.
What can be different even when the drug name is the same?
Even for the same active ingredient (quetiapine), differences between products can matter:
- Immediate-release vs extended-release versions are not interchangeable on a milligram-for-milligram basis without prescriber guidance.
- Different manufacturers can use different inactive ingredients, which rarely affect dosing but can affect tolerability for some patients.
Quick next step: share the missing details
If you tell me the imprint text exactly as it appears (for example, “E56” plus any other letters/numbers), the strength on the bottle, and whether it’s marked IR or XR (or what the bottle says), I can help you determine whether another manufacturer’s quetiapine matches the same product presentation.