Hydroxyzine paten?

Do you mean the patent status of hydroxyzine?

Here’s a quick overview:

- Hydroxyzine is an old drug (first developed mid-20th century) used as an antihistamine for allergies, anxiety, sedation, and itching. It comes mainly as two salt forms: hydroxyzine hydrochloride (brand name Atarax) and hydroxyzine pamoate (brand name Vistaril).

- The original patents on hydroxyzine and its common salt forms have long expired in most major markets, and the drug is now widely available as a generic. That means generics for hydroxyzine hydrochloride and hydroxyzine pamoate are common.

- There can be newer patents in specific niches, such as:
- formulation patents (e.g., a particular sustained‑release or injectable form)
- method-of-use patents (a unique medical use)
- combination products

But these are country‑specific and often limited in scope; they may or may not still be in force depending on jurisdiction and timing.

If you want precise patent numbers and expiry dates for a particular country or for a specific salt, I can help you look them up. Please share:
- country or region (US, EU, other)
- salt form (hydrochloride vs pamoate)
- whether you’re interested in the active‑ingredient patent, use patents, or a specific formulation

Tips to look them up yourself:
- Google Patents or Espacenet: search “hydroxyzine hydrochloride patent” and “hydroxyzine pamoate patent,” then filter by status/date.
- In the US, you can also check USPTO Patent Center for status and active claims.
- For European patents, check the European Patent Office (EPO) databases.

If you’d like, tell me the jurisdiction and salt form and I’ll help assemble a targeted overview.