Methysergide

Methysergide
Clinical data
Trade names	Desernil, Sansert
Other names	UML-491; 1-Methylmethylergonovine; N-[(2S)-1-Hydroxybutan-2-yl]-1,6-dimethyl-9,10-didehydroergoline-8α-carboxamide; N-(1-(Hydroxymethyl)propyl)-1-methyl-D-lysergamide
AHFS/Drugs.com	International Drug Names
MedlinePlus	a603022
Pregnancy; category	AU: C;
ATC code	N02CA04 (WHO) ;
Legal status
Legal status	AU: S4 (Prescription only); BR: Class C1 (Other controlled substances); CA: ℞-only; UK: POM (Prescription only); US: ℞-only;
Identifiers
	IUPAC name (6aR,9R)-N-[(2S)-1-Hydroxybutan-2-yl]-4,7-dimethyl-6,6a,8,9-tetrahydroindolo[4,3-fg]quinoline-9-carboxamide;
CAS Number	361-37-5 ;
PubChem CID	9681;
IUPHAR/BPS	134;
DrugBank	DB00247 ;
ChemSpider	9300 ;
UNII	XZA9HY6Z98;
KEGG	D02357 ;
ChEMBL	ChEMBL1065 ;
CompTox Dashboard (EPA)	DTXSID2023307 ;
ECHA InfoCard	100.006.041
Chemical and physical data
Formula	C21H27N3O2
Molar mass	353.466 g·mol−1
3D model (JSmol)	Interactive image;
	SMILES O=C(N[C@@H](CC)CO)[C@@H]3/C=C2/c4cccc1c4c(cn1C)C[C@H]2N(C3)C;
	InChI InChI=1S/C21H27N3O2/c1-4-15(12-25)22-21(26)14-8-17-16-6-5-7-18-20(16)13(10-23(18)2)9-19(17)24(3)11-14/h5-8,10,14-15,19,25H,4,9,11-12H2,1-3H3,(H,22,26)/t14-,15+,19-/m1/s1 ; Key:KPJZHOPZRAFDTN-ZRGWGRIASA-N ;
	(verify)

Methysergide, sold under the brand names Deseril and Sansert, is a monoaminergic medication of the ergoline and lysergamide groups which is used in the prophylaxis and treatment of migraine and cluster headaches. It has been withdrawn from the market in the United States and Canada due to adverse effects. It is taken by mouth.

Methysergide is no longer recommended as a first line treatment protocol by international headache societies, hospitals, and neurologists in private practice, for migraines or cluster headaches as side effects were first reported with long-term use in the late 1960s, and ergot-based treatments fell out of favor for the treatment of migraines with the introduction of triptans in the 1980s.

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