Below is a quick‑reference guide to the most widely‑known generic manufacturers of quetiapine fumarate (the generic drug that is sold under the brand name Seroquel). The list covers the United States and several major international markets; many of the same companies also supply generic quetiapine in other countries.
| Region | Major Generic Manufacturers (FDA‑approved/EMA‑listed) | Typical Generic Trade Names (U.S.) | Notes |
|--------|--------------------------------------------------------|------------------------------------|-------|
| United States | Viatris (formerly Mylan) | Quetiapine | First generic approved in 2011. Offers both immediate‑release (IR) and extended‑release (XR) tablets. |
| | Teva Pharmaceuticals | Quetiapine | One of the largest generic producers worldwide. Offers IR and XR. |
| | Sun Pharmaceutical Industries | Quetiapine | Indian company with a U.S. subsidiary; offers IR tablets. |
| | Lupin Ltd. | Quetiapine | Supplies IR tablets; active in U.S. and EU markets. |
| | Cipla Ltd. | Quetiapine | Offers IR tablets; active in the U.S. and EU. |
| | Natco Pharma | Quetiapine | U.S.‑based subsidiary; supplies IR tablets. |
| | Glenmark Pharmaceuticals | Quetiapine | Offers IR tablets; U.S. presence. |
| | Zydus Cadila (now Zydus) – U.S. subsidiary | Quetiapine | Supplies IR tablets. |
| | Other smaller U.S. manufacturers (e.g., Mylan‑Viatris affiliates, Bausch‑Hansen, etc.) | Various generic names | Many U.S. pharmacies source quetiapine from these suppliers. |
| European Union | Teva Pharma | Quetiapine | EU‑listed generic; IR tablets. |
| | Viatris (Mylan) | Quetiapine | EU‑listed generic; IR tablets. |
| | Lupin Pharma | Quetiapine | EU‑listed generic. |
| | Cipla | Quetiapine | EU‑listed generic. |
| | Zydus, Natco, Glenmark | Quetiapine | EU‑listed generics. |
| India (and other developing‑market countries) | Zydus Cadila | Quetiapine | Major local producer. |
| | Cipla | Quetiapine | One of the largest Indian generic manufacturers. |
| | Lupin | Quetiapine | Strong Indian presence. |
| | Sun Pharma | Quetiapine | Global generic portfolio. |
| | Natco Pharma | Quetiapine | Active in Indian and overseas markets. |
| | Glenmark | Quetiapine | Indian‑based, also exports. |
| | Zydus Cadila | Quetiapine | Another major Indian player. |
Quick facts about generic quetiapine
| Fact | Detail |
|------|--------|
| Dosage forms | 25 mg, 50 mg, 100 mg, 200 mg, 300 mg tablets (IR and XR). |
| Common generic trade names (U.S.) | Queti, Quetiapine, Quetiapine fumarate (often just “Quetiapine”). |
| Availability | Widely available in community pharmacies across the U.S., EU, and many other countries. |
| Regulatory status | Approved by FDA (U.S.) and EMA (EU) as bioequivalent to brand‑name Seroquel. |
| Pricing | Generics are typically 20‑50 % of the brand price, depending on the market and payer agreements. |
How to find the right supplier
1. Check your local drug database – the FDA’s Orange Book (U.S.) lists approved generic manufacturers. The EU’s Public Assessment Reports (PAC) provide similar information.
2. Ask your pharmacist – they usually have up‑to‑date information on which generics are in stock from which manufacturers.
3. Consult your prescriber – if you have a preference for a particular manufacturer (e.g., due to prior experience or insurance coverage), let them know.
Final note
Generic quetiapine is highly bioequivalent to brand‑name Seroquel, so the therapeutic effect should be essentially the same regardless of the manufacturer. If you have specific questions about a particular brand name, formulation (IR vs. XR), or insurance coverage, let me know and I can dig deeper!