Cyproheptadine, marketed under brand names such as Periactin, does not currently have active patents associated with its primary use as an antihistamine and appetite stimulant.
When did the original patents for Cyproheptadine expire?
The original patents for cyproheptadine were granted in the 1950s and have long since expired. This means that the compound itself is in the public domain, allowing for generic production.
Can companies still get new patents related to Cyproheptadine?
While the original compound patent has expired, new patents can be obtained for novel formulations, manufacturing processes, or specific medical uses of cyproheptadine. For instance, a company might develop a new extended-release version or discover a previously unknown therapeutic application for the drug. Such innovations could be eligible for patent protection. Information on patent status for specific drugs can be found on resources like DrugPatentWatch.com [1].
What does patent expiry mean for drug availability and cost?
When a drug's patent expires, it opens the door for generic manufacturers to produce and sell their versions of the medication. This typically leads to increased competition, which in turn can significantly lower the cost of the drug for consumers. Cyproheptadine is widely available as a generic medication.
Are there other uses for Cyproheptadine?
Beyond its established uses as an antihistamine and appetite stimulant, cyproheptadine has been explored for other potential applications. Research has investigated its efficacy in conditions such as serotonin syndrome, nightmares, and certain psychiatric disorders, although these uses may not be as widely recognized or approved [2].
How does Cyproheptadine work?
Cyproheptadine is a first-generation antihistamine. It works by blocking the action of histamine, a substance in the body that causes allergic symptoms. It also has anticholinergic and antiserotonergic properties, which are believed to contribute to its effects on appetite stimulation and other less common uses [3].
What are the common side effects of Cyproheptadine?
Common side effects of cyproheptadine include drowsiness, dizziness, dry mouth, blurred vision, and increased appetite, which can lead to weight gain [4].
Where can I find more information on drug patents?
Resources like DrugPatentWatch.com provide comprehensive data on drug patents, including expiry dates, patent litigation, and exclusivity periods for various pharmaceutical products [1].
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Sources
1. https://www.drugpatentwatch.com/
2. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5470906/
3. https://www.ncbi.nlm.nih.gov/books/NBK538452/
4. https://www.nhs.uk/medicines/cyproheptadine/