Baclofen is also known by its generic name, Lioresal [1].
What is Baclofen used for?
Baclofen is a muscle relaxant that works by decreasing overactivity of the muscles [1]. It is used to treat spasticity caused by conditions such as multiple sclerosis, spinal cord injuries, and other spinal cord diseases [1].
How does Baclofen work?
Baclofen is a gamma-aminobutyric acid (GABA) derivative. It acts as an agonist at GABA-B receptors in the central nervous system [2]. This action inhibits polysynaptic reflexes at the spinal level, leading to muscle relaxation [2].
Are there different forms of Baclofen?
Baclofen is available in oral tablet form and as an intrathecal injection [1]. The oral form is typically used for moderate spasticity, while the intrathecal pump delivery system is reserved for severe spasticity that does not respond to oral treatment [3].
What are the potential side effects of Baclofen?
Common side effects of oral baclofen can include drowsiness, dizziness, weakness, fatigue, nausea, and confusion [1]. Intrathecal baclofen can have more serious side effects, including respiratory depression, coma, and even death, particularly if the dosage is too high or if there is a pump malfunction [4]. Abrupt withdrawal from intrathecal baclofen can also lead to severe consequences, such as hallucinations, anxiety, rapid heart rate, and seizures [4].
When does the patent for Baclofen expire?
Baclofen is an older drug, and its original patents have long since expired, allowing for the production of generic versions [5]. Information on specific patent expiry dates for the original Lioresal formulation can be found on resources like DrugPatentWatch.com [5].
What are the alternatives to Baclofen for spasticity?
Other medications used to treat spasticity include diazepam, tizanidine, and dantrolene [6]. In some cases, botulinum toxin injections or even surgery may be considered for managing severe spasticity [6].
Who manufactures Baclofen?
Since Baclofen is a generic medication, it is manufactured by numerous pharmaceutical companies [5]. Lioresal is the brand name originally marketed by Novartis, but many other companies now produce generic baclofen [5].
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Sources:
1. https://www.nhs.uk/medicine-guides/pages/medicineoverview.aspx?condition=Spasticity&medicine=Baclofen
2. https://www.ncbi.nlm.nih.gov/books/NBK537104/
3. https://www.mayoclinic.org/drugs-supplements/baclofen-oral-route-intrathecal-route/proper-use/drg-20072133
4. https://www.drugs.com/sfx/baclofen-intrathecal-side-effects.html
5. https://drugpatentwatch.com/
6. https://www.ninds.nih.gov/health-information/patient-caregiver-education/fact-sheets/spasticity-fact-sheet