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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 ...
As with any drug, there are drug interactions that can occur with alpha blockers. For instance, alpha blockers that are used for the reduction of blood pressure, such as phenoxybenzamine or phentolamine can have synergy with other drugs that affect smooth muscle, blood vessels, or drugs used for erectile dysfunction (i.e. sildenafil, tamsulosin ...
Higher selectivity is associated with less off-target binding, which is binding between drug molecules and receptors other than target receptors. [6] Therefore, non-selective adrenergic blockers can cause various adverse effects as they can also exert actions on non-target receptors, such as non-selective alpha blockers and beta blockers.
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.
Phenoxybenzamine is used as an anti-hypertensive due to its efficacy in reducing the vasoconstriction caused by epinephrine (adrenaline) and norepinephrine.Phenoxybenzamine forms a permanent covalent bond with adrenergic receptors.
Adrenergic blocking agents are a class of drugs that exhibit its pharmacological action through inhibiting the action of the sympathetic nervous system [1] in the body. The sympathetic nervous system(SNS) is an autonomic nervous system that we cannot control by will.
Two common trade brands for ADHD medication, Adderall and Concerta are made from different drug formulas. Adderall is made from amphetamine mixed salts and Concerta is made from methylphenidate.
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.