Nhận Dạng Quốc Tế & Đặc Tính Hóa Học
Monoisotopic mass
135.104799421
InChI
InChI=1S/C9H13N/c1-8(10)7-9-5-3-2-4-6-9/h2-6,8H,7,10H2,1H3/t8-/m0/s1
InChI Key
InChIKey=KWTSXDURSIMDCE-QMMMGPOBSA-N
IUPAC Name
(2S)-1-phenylpropan-2-amine
Traditional IUPAC Name
amphetamine
SMILES
C[C@H](N)CC1=CC=CC=C1
pKa (Strongest Basic)
10.01
Refractivity
43.71 m3·mol-1
Dược Lực Học :
Amphetamines such as dextroamphetamine are noncatecholamine, sympathomimetic amines with CNS stimulant activity. Peripheral actions include elevations of systolic and diastolic blood pressures and weak bronchodilator and respiratory stimulant action. There is neither specific evidence that clearly establishes the mechanism whereby amphetamines produce mental and behavioral effects in children, nor conclusive evidence regarding how these effects relate to the condition of the central nervous system.
Cơ Chế Tác Dụng :
Dextroamphetamine is the dextrorotary stereoisomer of the amphetamine molecule, which can take two different forms. It is a slightly polar, weak base and is lipophilic.
The exact mechanism of action is not known. Dextroamphetamine stimulates the release of norepinephrine from central adrenergic receptors. At higher dosages, it causes release of dopamine from the mesocorticolimbic system and the nigrostriatal dopamine systems by reversal of the monoamine transporters. Dextroamphetamine may also act as a direct agonist on central 5-HT receptors and may inhibit monoamine oxidase (MAO). In the periphery, amphetamines are believed to cause the release of noradrenaline by acting on the adrenergic nerve terminals and alpha- and beta-receptors. Modulation of serotonergic pathways may contribute to the calming affect.
Dược Động Học :
▧ Absorption :
Oral bioavailability is over 75%.
▧ Metabolism :
Hepatic.
▧ Half Life :
10-28 hours (average is approximately 12 hours)
Độc Tính :
In rats, the oral LD50 of dextroamphetamine sulfate is 96.8 mg/kg. Manifestations of acute overdosage with amphetamines include restlessness, tremor, hyperreflexia, rhabdomyolysis, rapid respiration, hyperpyrexia, confusion, assaultiveness, hallucinations, panic states. Fatigue and depression usually follow the central stimulation. Cardiovascular effects include arrhythmias, hypertension or hypotension, and circulatory collapse. Gastrointestinal symptoms include nausea, vomiting, diarrhea, and abdominal cramps. Fatal poisoning is usually preceded by convulsions and coma.
Chỉ Định :
Used to treat attention deficit hyperactivity disorder (ADHD).
Tương Tác Thuốc :
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Chlorpromazine
Decreased anorexic effect, may increases psychotic symptoms
-
Fluoxetine
Risk of serotoninergic syndrome
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Fluphenazine
Decreased anorexic effect, may increase psychotic symptoms
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Fluvoxamine
Risk of serotoninergic syndrome
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Guanethidine
Dextroamphetamine may decrease the effect of guanethidine.
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Isocarboxazid
Possible hypertensive crisis
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Mesoridazine
Decreased anorexic effect, may increase psychotic symptoms
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Methotrimeprazine
Decreased anorexic effect, may increase psychotic symptoms
-
Paroxetine
Risk of serotoninergic syndrome
-
Perphenazine
Decreased anorexic effect, may increase psychotic symptoms
-
Phenelzine
Possible hypertensive crisis
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Prochlorperazine
Decreased anorexic effect, may increase pyschotic symptoms
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Promethazine
Decreased anorexic effect, may increase pyschotic symptoms
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Propericiazine
Decreased anorexic effect, may increase pyschotic symptoms
-
Rasagiline
Possible hypertensive crisis
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Thioridazine
Decreased anorexic effect, may increase psychotic symptoms
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Tramadol
Increased risk of serotonin syndrome. Monitor for symptoms of serotonin syndrome.
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Trandolapril
Dextroamphetamine may reduce the efficacy of Trandolapril.
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Tranylcypromine
The MAO inhibitor, Tranylcypromine, may increase the vasopressor effect of the amphetamine, Dextroamphetamine. Concomitant therapy should be avoided.
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Trifluoperazine
Decreased anorexic effect, may increase psychotic symptoms
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Triprolidine
Triprolidine may reduce the sedative effect of the antihistamine, Dextroamphetamine.
Liều Lượng & Cách Dùng :
Capsule, extended release - Oral
Tablet - Oral
Dữ Kiện Thương Mại
Nhà Sản Xuất
-
Sản phẩm biệt dược : Attentin
-
Sản phẩm biệt dược : Dexamphetamine
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Sản phẩm biệt dược : Dexedrine
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Sản phẩm biệt dược : ProCentra
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Sản phẩm biệt dược : Zenzedi
Tài Liệu Tham Khảo Thêm
National Drug Code Directory