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The primary application for phentolamine is for the control of hypertensive emergencies, most notably due to pheochromocytoma. [5]It also has usefulness in the treatment of cocaine-induced cardiovascular complications, where one would generally avoid β-blockers (e.g. metoprolol), as they can cause unopposed α-adrenergic mediated coronary vasoconstriction, worsening myocardial ischemia and ...
Phentolamine is a competitive and nonselective α-adrenoreceptor antagonist. Propranolol is a β-adrenoreceptor antagonist. ... The action of an uncompetitive ...
Nonselective alpha blockers, such as phenoxybenzamine or phentolamine, can be used to mitigate this disease. Pheochromocytoma is a disease in which a catecholamine secreting tumor develops. [ 2 ] [ 20 ] Specifically, norepinephrine and epinephrine are secreted by these tumors, either continuously or intermittently. [ 21 ]
Trimix is a combination of three drugs: alprostadil, papaverine, and phentolamine. These medications work in combination to increase blood flow to the penis, resulting in an erection. [1] [2] [3] Alprostadil is a prostaglandin vasodilator that allows more blood to flow into the area by relaxing the smooth muscle in the blood vessels of the penis.
October 2000 UK (Invicorp): aviptadil, in combination with the adrenergic drug phentolamine, is approved as an effective alternative therapy for erectile dysfunction (ED) patients. One dose intracavernosal injection contains 25 micrograms aviptadil and 2 mg of phentolamine mesilate for the treatment of ED.
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They work by inhibiting the synthesis, release, or reuptake of the neurotransmitters or by antagonising the receptors on postsynaptic neurones. Their medical uses, mechanisms of action, adverse effects, and contraindications depend on the specific types of adrenergic blockers used, including alpha 1, alpha 2, beta 1, and beta 2.
AMSTERDAM (Reuters) -The head of the chemical weapons watchdog said on Thursday he would ask Syria's new leaders to grant investigators access to the country to continue work identifying ...