Pregabalin is an anticonvulsant and anti-anxiety medication used to treat a range of conditions, including epilepsy, nerve pain, fibromyalgia, and generalized anxiety disorder [1].

The medication works by modulating the activity of calcium channels in the brain to reduce the release of neurotransmitters associated with pain, anxiety, and seizures [2].

Research has shown that pregabalin is effective in managing symptoms of restless legs syndrome, neuropathic pain, and postherpetic neuralgia [3]. However, side effects such as dizziness, drowsiness, and weight gain can occur in some patients [4].

Pregabalin is marketed under the brand name Lyrica, among others, and its availability in various forms, including capsules, oral solution, and powder for oral solution [5].

According to DrugPatentWatch.com, the patent for Lyrica expired in 2018, allowing generic versions of the medication to become available [6].

Sources:

[1] https://pubmed.ncbi.nlm.nih.gov/15713970/

[2] https://www.pharmgkb.org/pathway/PA179000047

[3] https://pubmed.ncbi.nlm.nih.gov/16314515/

[4] https://www.drugs.com/side-effects/lyrica.html

[5] https://www.accessdata.fda.gov/drugsatfda_docs/label/2019/021366Orig1s032bl.pdf

[6] https://www.drugpatentwatch.com/drug/lyrica-oral-tablet