Dexamethasone kanchan patent expiry?

Do you mean the patent expiry for the basic dexamethasone molecule, or for a specific salt/ester (e.g., dexamethasone sodium phosphate) or a particular formulation/product? And which country or region are you interested in?

Here’s a quick, general answer you can use as a starting point:
- For the basic molecule dexamethasone, patent protection has long expired in virtually all major markets. The compound is now off-patent and available as a generic in most places.
- Some older patents may exist on specific salts, esters, formulations, delivery methods, or manufacturing processes. Those can still have country-specific expiry dates, though many of them are also long expired or have been superseded by generics.
- Regulatory exclusivities (data exclusivity, pediatric exclusivity, etc.) are separate from patent protection and typically do not apply to the old, well-established dexamethasone molecule itself, but can matter for new products.

If you want precise expiry dates, please tell me:
- The country/region you care about (e.g., US, EU, India, etc.)
- Whether you’re asking about the basic dexamethasone molecule or a specific salt/ester or a particular product formulation

I can then look up the current patent status for the exact scope you need (and provide the relevant patent family numbers and expiry dates).