Nhận Dạng Quốc Tế & Đặc Tính Hóa Học
Monoisotopic mass
581.263819255
InChI
InChI=1S/C33H35N5O5/c1-32(35-29(39)21-15-23-22-10-6-11-24-28(22)20(17-34-24)16-25(23)36(2)18-21)31(41)38-26(14-19-8-4-3-5-9-19)30(40)37-13-7-12-27(37)33(38,42)43-32/h3-6,8-11,15,17,21,25-27,34,42H,7,12-14,16,18H2,1-2H3,(H,35,39)/t21-,25-,26+,27+,32-,33+/m1/s1
InChI Key
InChIKey=XCGSFFUVFURLIX-VFGNJEKYSA-N
IUPAC Name
(4R,7R)-N-[(1S,2S,4R,7S)-7-benzyl-2-hydroxy-4-methyl-5,8-dioxo-3-oxa-6,9-diazatricyclo[7.3.0.0^{2,6}]dodecan-4-yl]-6-methyl-6,11-diazatetracyclo[7.6.1.0^{2,7}.0^{12,16}]hexadeca-1(16),2,9,12,14-pentaene-4-carboxamide
Traditional IUPAC Name
ergotamine
SMILES
[H][C@@]12CCCN1C(=O)[C@H](CC1=CC=CC=C1)N1C(=O)[C@](C)(NC(=O)[C@H]3CN(C)[C@]4([H])CC5=CNC6=CC=CC(=C56)C4=C3)O[C@@]21O
pKa (strongest acidic)
9.7
pKa (Strongest Basic)
7.78
Refractivity
160.17 m3·mol-1
Dược Lực Học :
Ergotamine is a vasoconstrictor and alpha adrenoreceptor antagonist. The pharmacological properties of ergotamine are extremely complex; some of its actions are unrelated to each other, and even mutually antagonistic. The drug has partial agonist and/or antagonist activity against tryptaminergic, dopaminergic and alpha adrenergic receptors depending upon their site, and it is a highly active uterine stimulant. It causes constriction of peripheral and cranial blood vessels and produces depression of central vasomotor centers. The pain of a migraine attack is believed to be due to greatly increased amplitude of pulsations in the cranial arteries, especially the meningeal branches of the external carotid artery. Ergotamine reduces extracranial blood flow, causes a decline in the amplitude of pulsation in the cranial arteries, and decreases hyperperfusion of the territory of the basilar artery. It does not reduce cerebral hemispheric blood flow.
Cơ Chế Tác Dụng :
A vasoconstrictor found in ergot of Central Europe. It is an alpha-1 selective adrenergic agonist and is commonly used in the treatment of migraine disorders. [PubChem]
Ergotamine acts on migraine by one of two proposed mechanisms: 1) activation of 5-HT1D receptors located on intracranial blood vessels, including those on arterio-venous anastomoses, leads to vasoconstriction, which correlates with the relief of migraine headache, and 2) activation of 5-HT1D receptors on sensory nerve endings of the trigeminal system results in the inhibition of pro-inflammatory neuropeptide release.
Dược Động Học :
▧ Absorption :
The bioavailability of sublingually administered ergotamine has not been determined.
▧ Metabolism :
Hepatic. Ergotamine is metabolized by the liver by largely undefined pathways, and 90% of the metabolites are excreted in the bile.
▧ Half Life :
2 hours
Độc Tính :
Signs of overexposure include irritation, nausea, vomiting, headache, diarrhea, thirst, coldness of skin, pruritus, weak pulse, numbness, tingling of extremities, and confusion.
Chỉ Định :
For use as therapy to abort or prevent vascular headache, e.g., migraine, migraine variants, or so called "histaminic cephalalgia".
Tương Tác Thuốc :
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Acebutolol
Ischemia with risk of gangrene
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Almotriptan
Possible severe and prolonged vasoconstriction
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Amprenavir
Amprenavir may increase the effect and toxicity of ergotamine.
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Amyl Nitrite
Possible antagonism of action
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Atazanavir
Atazanavir may increase the effect and toxicity of ergotamine.
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Atenolol
Ischemia with risk of gangrene
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Betaxolol
Ischemia with risk of gangrene
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Bevantolol
Ischemia with risk of gangrene
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Bisoprolol
Ischemia with risk of gangrene
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Carteolol
Ischemia with risk of gangrene
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Carvedilol
Ischemia with risk of gangrene
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Clarithromycin
Risk of ergotism and severe ischemia with this association
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Delavirdine
The antiretroviral agent may increase the ergot derivative toxicity
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Desvenlafaxine
Increased risk of serotonin syndrome. Monitor for symptoms of serotonin syndrome.
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Efavirenz
The antiretroviral agent may increase the ergot derivative toxicity
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Eletriptan
Possible severe and prolonged vasoconstriction
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Erythrityl Tetranitrate
Possible antagonism of action
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Erythromycin
Possible ergotism and severe ischemia with this combination
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Esmolol
Ischemia with risk of gangrene
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Fluconazole
Possible ergotism and severe ischemia with this combination
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Fluoxetine
Possible ergotism and severe ischemia with this combination
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Fluvoxamine
Possible ergotism and severe ischemia with this combination
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Fosamprenavir
Amprenavir increases the effect and toxicity of ergot derivative
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Frovatriptan
Possible severe and prolonged vasoconstriction
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Indinavir
Indinavir may increase the serum concentration of ergotamine. Concomitant therapy is contraindicated.
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Isosorbide Dinitrate
Possible antagonism of action
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Isosorbide Mononitrate
Possible antagonism of action
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Itraconazole
Possible ergotism and severe ischemia with this combination
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Josamycin
Possible ergotism and severe ischemia with this combination
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Ketoconazole
Possible ergotism and severe ischemia with this combination.
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Labetalol
Ischemia with risk of gangrene
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Lorcaserin
Avoid all combinations with any ergot derivative such as ergotamine. The combination can increase the risk of developing serotonin syndrome and/or valvular heart disease.
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Metoprolol
Ischemia with risk of gangrene
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Nadolol
Ischemia with risk of gangrene
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Naratriptan
Possible severe and prolonged vasoconstriction.
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Nefazodone
Possible ergotism and severe ischemia with this combination
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Nelfinavir
Nelfinavir increases the effect and toxicity of ergot derivative
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Nitroglycerin
Possible antagonism of action
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Oxprenolol
Ischemia with risk of gangrene
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Penbutolol
Ischemia with risk of gangrene
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Pentaerythritol Tetranitrate
Possible antagonism of action
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Pindolol
Ischemia with risk of gangrene
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Posaconazole
Contraindicated co-administration
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Practolol
Ischemia with risk of gangrene
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Propranolol
Ischemia with risk of gangrene
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Ritonavir
The protease inhibitor, ritonavir, may increase the effect and toxicity of the ergot derivative, ergotamine.
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Rizatriptan
Possible severe and prolonged vasoconstriction
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Saquinavir
The protease inhibitor, saquinavir, may increase the effect and toxicity of the ergot derivative, ergotamine.
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Sibutramine
Possible serotoninergic syndrome with this combination
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Sotalol
Ischemia with risk of gangrene
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Sumatriptan
Possible severe and prolonged vasoconstriction
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Telaprevir
Telaprevir increases levels by affecting CYP3A4 metabolism. Concomitant therapy is contraindicated.
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Telithromycin
Telithromycin may reduce clearance of Ergotamine. Concomitant therapy is contraindicated.
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Timolol
Ischemia with risk of gangrene
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Tipranavir
Tipranavir, co-administered with Ritonavir, may increase the plasma concentration of Ergotamine. Concomitant therapy is contraindicated.
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Tramadol
Increased risk of serotonin syndrome. Monitor for symptoms of serotonin syndrome.
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Tranylcypromine
Increased risk of serotonin syndrome. Use caution during concomitant therapy and monitor for symptoms of serotonin syndrome.
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Trazodone
Increased risk of serotonin syndrome. Monitor for symptoms of serotonin syndrome.
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Trimipramine
Increased risk of serotonin syndrome. Monitor for symptoms of serotonin syndrome.
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Troleandomycin
Possible ergotism and severe ischemia with this combination
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Venlafaxine
Increased risk of serotonin syndrome. Monitor for symptoms of serotonin syndrome.
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Voriconazole
Voriconazole, a strong CYP3A4 inhibitor, may increase the serum concentration of ergotamine by decreasing its metabolism. Concomitant therapy is contraindicated.
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Zileuton
Possible ergotism and severe ischemia with this combination
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Zolmitriptan
Concomitant use of the serotonin 5-HT1D receptor agonist, zolmitriptan, and the ergot derivative, ergotamine, may result in additive vasoconstrictive effects. Concomitant use within 24 hours is contraindicated.
Liều Lượng & Cách Dùng :
Tablet - Sublingual
Dữ Kiện Thương Mại
Nhà Sản Xuất
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Sản phẩm biệt dược : Anervan
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Sản phẩm biệt dược : Antimigraine
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Sản phẩm biệt dược : Cafergot
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Sản phẩm biệt dược : Enxak
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Sản phẩm biệt dược : Ergam
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Sản phẩm biệt dược : Ergo-Kranit
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Sản phẩm biệt dược : Ergomar
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Sản phẩm biệt dược : Gynaemine
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Sản phẩm biệt dược : Wigrettes
Tài Liệu Tham Khảo Thêm
National Drug Code Directory