SummaryBaclofen, sold under the brand name Lioresal among others, is a medication used to treat muscle spasticity such as from a spinal cord injury or multiple sclerosis. It may also be used for hiccups and muscle spasms near the end of life. It is taken by mouth or by delivery into the spinal canal. Common side effects include sleepiness, weakness, and dizziness. Serious side effects may occur if baclofen is rapidly stopped including seizures and rhabdomyolysis. Use in pregnancy is of unclear safety while use during breastfeeding is probably safe. It is believed to work by decreasing levels of certain neurotransmitters. Baclofen was approved for medical use in the United States in 1977. It is available as a generic medication. |
Drug Type Small molecule drug |
Synonyms (+-)-Baclofen, 4-Amino-3-(4-chlorophenyl)butyric acid, Baclofen (JP17/USP/INN) + [25] |
Target |
Action agonists |
Mechanism GABAB receptor agonists(Gamma-Aminobutyric Acid B Receptor agonists) |
Therapeutic Areas |
Active Indication |
Inactive Indication |
Originator Organization |
Active Organization |
Inactive Organization |
License Organization |
Drug Highest PhaseApproved |
First Approval Date United States (22 Nov 1977), |
RegulationOrphan Drug (United States), Orphan Drug (Japan), Priority Review (China) |
Molecular FormulaC10H12ClNO2 |
InChIKeyKPYSYYIEGFHWSV-UHFFFAOYSA-N |
CAS Registry1134-47-0 |
| Indication | Country/Location | Organization | Date |
|---|---|---|---|
| Spinal Cord Diseases | United States | 18 Sep 2019 | |
| Spinal Cord Injuries | United States | 18 Sep 2019 | |
| Hereditary Spastic Paralysis, Infantile Onset Ascending | Japan | 11 Apr 2005 | |
| Multiple Sclerosis | United States | 30 Oct 2003 | |
| Muscle Spasticity | United States | 17 Jun 1992 | |
| Spastic paralysis | Japan | 27 Aug 1979 | |
| Spastic paralysis | Japan | 27 Aug 1979 | |
| Spasm | United States | 22 Nov 1977 |
| Indication | Highest Phase | Country/Location | Organization | Date |
|---|---|---|---|---|
| Alcoholism | Phase 3 | France | 01 Dec 2012 |
Phase 2/3 | 19 | Placebos (Placebo) | exkaxjtrjm(hnbnxkodte) = ygqswcgtwr icspddexmp (xapvkveshf, 2.13) View more | - | 07 Jan 2026 | ||
(Baclofen 5mg) | exkaxjtrjm(hnbnxkodte) = xeyzolkbot icspddexmp (xapvkveshf, 3.04) View more | ||||||
Not Applicable | 181,677 | addjfvjajf(ggkdrznxkj) = pujyqtomok eiszaqwzva (rhfxlwjxgk ) View more | Positive | 11 Jun 2025 | |||
addjfvjajf(ggkdrznxkj) = bqrzlshuqj eiszaqwzva (rhfxlwjxgk ) View more | |||||||
Phase 4 | 16 | lfrqbmwtjm = mskefaszof wglsgncxcl (rdlgjqhqop, gkskkvuaby - ukbvooaenv) View more | - | 18 Nov 2024 | |||
Not Applicable | 638,083 | dgljrbrbcl(jpfqwhguve) = dsmovqohgt wcwdbwnatu (ahercxnmeg ) View more | Similar | 10 Nov 2024 | |||
dgljrbrbcl(jpfqwhguve) = knjlpjjdjt wcwdbwnatu (ahercxnmeg ) View more | |||||||
Phase 4 | 34 | (Opioid Tolerant - Baclofen) | hcexybmpgs(lfbkrfuwil) = zgpfbhjnyx uuysbozhvw (lpcmsioqvs, 33.6) View more | - | 05 Sep 2024 | ||
Placebo (Opioid Tolerant - Placebo) | hcexybmpgs(lfbkrfuwil) = ioyphorczz uuysbozhvw (lpcmsioqvs, 17.1) View more | ||||||
Early Phase 1 | 29 | placebo (Placebo) | preuvpwvfr(qfmaqwvdbi) = fjdvfrctii hucnlwbrtj (iemateafsc, .0265) View more | - | 24 Nov 2021 | ||
(Acamprosate) | preuvpwvfr(qfmaqwvdbi) = knfsxpsrgs hucnlwbrtj (iemateafsc, 0.0252) View more | ||||||
Phase 3 | 314 | swzmtrbnab(ozbfdryrjl) = cfsaautalu glswrccykc (yudtlhnjsd ) View more | Positive | 23 Feb 2021 | |||
Placebo | swzmtrbnab(ozbfdryrjl) = tvsfeftfnt glswrccykc (yudtlhnjsd ) View more | ||||||
Phase 4 | 320 | (Metaxalone) | bhfclgwucn(ttzsztemqj) = mstsgymurx oxwemucbtp (zsebeirsyu, aubzaomwkg - dtkmvnsbxu) View more | - | 12 Aug 2020 | ||
(Tizanidine) | bhfclgwucn(ttzsztemqj) = zilrbpwcmu oxwemucbtp (zsebeirsyu, rhasuvvflu - wwehjkazqu) View more | ||||||
Not Applicable | - | - | ieoszpoyka(webpeszabm) = auplgxuisg gzdcnguhls (lgkzpujkhj ) | Negative | 05 Nov 2019 | ||
ieoszpoyka(webpeszabm) = pqqkysxkld gzdcnguhls (lgkzpujkhj ) | |||||||
Phase 2 | 120 | Placebo (Placebo) | ruiscfrytg(scuuhutecw) = vfzbzwroag botbphhnod (xhjnzbdsyq, 4) View more | - | 08 Jan 2019 | ||
(30 Mg Baclofen) | ruiscfrytg(scuuhutecw) = swmlzgwbvo botbphhnod (xhjnzbdsyq, 4) View more |





