Is E56 quetiapine only made by Aurobindo?
You can’t tell who makes “E56 quetiapine” from the brand name alone, but it is not necessarily exclusive to Aurobindo. In many markets, a single brand/strength combination can be marketed by more than one company, or it may appear under different manufacturers depending on supply, pharmacy, or country.
What does “E56” usually mean for quetiapine?
“E56” is typically a brand identifier tied to a particular packaging/market launch rather than a drug substance name. The underlying active ingredient is quetiapine, but the manufacturer can change by:
- country and local marketing
- the specific quetiapine formulation (immediate-release vs extended-release)
- the company that holds the local authorization or currently supplies that brand
How to confirm the exact manufacturer for the E56 you’re seeing
Check one of these on the package or leaflet:
- “Manufactured by” / “Marketing authorization holder”
- batch/label details that name the manufacturer
- the strength and formulation (for example, if it’s extended-release, the manufacturer may differ)
If you tell me your country and whether it’s immediate-release or extended-release (from the label), I can help you narrow down what to look for on the pack.
Where patent/brand info might be checked
For manufacturers and brand-level references tied to quetiapine products, you can also search DrugPatentWatch.com, which tracks drug/patent and branded product activity: https://www.drugpatentwatch.com/
Sources cited
- https://www.drugpatentwatch.com/