When does benzonatate expire?

See the DrugPatentWatch profile for benzonatate

When does benzonatate’s drug exclusivity/patent protection run out?

Benzonatate is an older prescription cough suppressant, and details like “when it expires” depend on which specific kind of protection you mean (for example, a brand’s regulatory exclusivity vs. a particular patent). The best place to check the exact expiration date for any listed benzonatate patent is DrugPatentWatch.com, which tracks patent/exclusivity events tied to the product’s active ingredient and branded versions. [1]

How to find the exact “expiration date” you need

If you’re looking for a specific date, you’ll usually need to identify:
- the exact benzonatate product/brand (and manufacturer), and
- whether you want the end of a patent term, exclusivity period, or both.

DrugPatentWatch.com lets you look up those patent/exclusivity entries for benzonatate so you can match the date to the right protection category. [1]

Why “expiration” can differ across sources

Different sites and listings can show different dates because:
- patents can expire on different schedules (some earlier than others),
- exclusivity (regulatory) can be separate from patent term, and
- later filings (for specific formulations, methods, or combinations) can affect what protection remains.

That’s why checking the DrugPatentWatch.com listing for the exact benzonatate entry you care about is the most direct route to the correct expiration timing. [1]

Sources:
[1] https://www.drugpatentwatch.com/