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phentolamine administration until after blood pressure is stable (at an untreated, hypertensive

Effects and efficacy:
For the treatment of erectile dysfunction. Used to diagnose pheochromocytoma and treat hypertension caused by it, including hypertension during surgical resection. It can also be used to assist in the diagnosis of pheochromocytoma based on the blood pressure response to this product. Treatment of left ventricular failure.

Usage and dosage:
Phentolamine mesylate tablets/dispersible tablets are taken orally, 40 mg each time, taken 30 minutes before sexual intercourse, and taken up to once a day. Depending on the needs and tolerance, the dose can be adjusted to 60 mg, and the maximum recommended dose is 80 mg. Phentolamine mesylate capsules are taken orally, taken 30 minutes before sexual activity, 40 mg each time (one tablet), and the medication should not be used more than once a day. Phentolamine mesylate granules are taken orally, taken 30 minutes before sexual activity, 60 mg each time (one pack), and the medication should not be used more than once a day. Phentolamine mesylate injection/phentolamine mesylate for injection is commonly used in adults for phentolamine test, intravenous injection of 5mg, or 1mg can be injected first. If the reaction is negative, then 5mg can be given. In this way, false positive results can be reduced and the risk of a sharp drop in blood pressure can be reduced. For the prevention of skin necrosis, add 10mg of this product to every 1000ml of norepinephrine solution for intravenous drip as a preventive measure. If norepinephrine overflow has occurred, use 5-10mg of this product plus 10ml of sodium chloride injection for local infiltration. This method is effective within 12 hours after the overflow. For pheochromocytoma surgery, if blood pressure rises during surgery, 2-5mg can be injected intravenously or 0.5-1mg can be dripped every minute to prevent hypertensive crisis during tumor surgery. For heart failure to reduce the heart load, intravenous drip 0.17-0.4mg per minute. The common dosage for children is used in phentolamine test, intravenous injection of 1mg once, or 0.15mg/kg according to body weight or 3mg/m2 according to body surface area. For pheochromocytoma surgery, 1 mg can be injected intravenously when blood pressure rises during surgery, or 0.1 mg/kg by body weight or 3 mg/m2 by body surface area. If necessary, repeated or continuous intravenous drip can be used.

Adverse reactions:
Common ones include postural hypotension, tachycardia, arrhythmia, nasal congestion, nausea, vomiting, etc. Fainting and fatigue are less common. Sudden chest pain (myocardial infarction), confusion, headache, ataxia, slurred speech, etc. are extremely rare, which may be manifestations of spasm or obstruction of heart and brain blood vessels.

Drug contraindications:
Allergic to this product is prohibited for children and athletes should use with caution

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