What is Guanethidine Monosulfate?

Guanethidine Monosulfate is no longer available in the United States.

Guanethidine Monosulfate is a prescription medication that's used to treat high blood pressure (hypertension). It may be used alone or with other medications to help lower blood pressure. Guanethidine Monosulfate is a type of medication called an antiadrenergic, which works by interfering with certain chemicals that narrow the blood vessels and increase blood pressure. Guanethidine Monosulfate comes as a tablet that's taken by mouth. Your doctor will determine the correct dosage for you based on your medical condition, but it's important to always take this medication exactly as your doctor prescribes. You should also monitor your own blood pressure while taking Guanethidine Monosulfate, so ask your doctor the best method for doing so. Guanethidine Monosulfate is the generic name for the active ingredient contained in brand-name medications such as Ismelin (which is no longer available in the United States). Talk to your doctor to determine whether Guanethidine Monosulfate is right for you.

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