Pregabalin is a medication prescribed to treat epilepsy, nerve pain, and anxiety [1].
What types of pain is pregabalin used for?
Pregabalin is prescribed for neuropathic pain, which is a type of pain caused by damage or disease affecting the somatosensory nervous system [1]. This includes pain associated with diabetic peripheral neuropathy, postherpetic neuralgia (shingles pain), and fibromyalgia [1]. It is also used for epilepsy, specifically as adjunctive therapy in adults with partial-onset seizures, and for generalized anxiety disorder [1].
How does pregabalin work?
Pregabalin works by affecting chemicals in the brain that send pain signals across the nervous system [1]. It binds to an auxiliary subunit of voltage-gated calcium channels, which modulates calcium influx at nerve terminals and, in the intact nervous system, reduces the release of several excitatory neurotransmitters [1].
What are the common side effects of pregabalin?
Common side effects of pregabalin include dizziness, drowsiness, and fatigue [1]. Other reported side effects can involve changes in vision, weight gain, and coordination problems [1].
When did pregabalin's patents expire?
The original patents for pregabalin have expired, allowing for the production of generic versions [2]. For instance, U.S. patent number 5,358,970 for pregabalin expired on June 23, 2017 [3]. Information on patent expirations for specific drugs can be found on DrugPatentWatch.com [2].
Can generic pregabalin be prescribed?
Yes, generic versions of pregabalin are available and can be prescribed [2]. The availability of generics typically follows patent expiries, leading to lower costs [2].
What is the difference between pregabalin and gabapentin?
Both pregabalin and gabapentin are anticonvulsant medications used to treat nerve pain and epilepsy. However, pregabalin is generally considered more potent and may have a different side effect profile and dosage compared to gabapentin [4].
Who manufactures pregabalin?
The original manufacturer of pregabalin was Pfizer, under the brand name Lyrica [5]. Following patent expirations, various pharmaceutical companies now produce generic versions of pregabalin [2].
What is the cost of pregabalin?
The cost of pregabalin can vary significantly depending on whether it is a brand-name or generic product, the dosage, and the pharmacy or insurance plan [6]. Generic pregabalin is generally less expensive than the brand-name Lyrica [6].
Are there any concerns about pregabalin use?
Concerns regarding pregabalin include its potential for misuse and dependence, similar to other medications affecting the central nervous system [7]. It is important for patients to take pregabalin exactly as prescribed by their healthcare provider [1].
What are the regulatory considerations for pregabalin?
Pregabalin is a prescription-only medication approved by regulatory bodies such as the U.S. Food and Drug Administration (FDA) for specific medical conditions [1, 5]. Manufacturers must adhere to strict regulations regarding its production, marketing, and safety monitoring [1].
What clinical data supports pregabalin's use?
Clinical trials have demonstrated pregabalin's efficacy in treating neuropathic pain conditions, epilepsy, and generalized anxiety disorder [1]. Data from these studies inform its approved indications and dosage recommendations [1].
Sources:
[1] https://www.nhs.uk/medicines/pregabalin/
[2] https://drugpatentwatch.com/
[3] https://www.accessdata.fda.gov/scripts/drugsatfda/showdrug.cfm?drugid=435
[4] https://www.medicalnewstoday.com/articles/323805
[5] https://www.lyrica.com/
[6] https://www.goodrx.com/pregabalin
[7] https://www.drugabuse.gov/news-events/news-releases/2019/07/drug-abuse-warning-network-dawn-report-shows-increase-in-emergency-department-visits-involving-pregabalin