May 22, 2017
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"The U.S. Food and Drug Administration today proposed to withdraw approval of the drug midodrine hydrochloride, used to treat the low blood pressure condition orthostatic hypotension, because required post-approval studies that verify the clinical"...



(midodrine hydrochloride) Tablets


Because ProAmatine® can cause marked elevation of supine blood pressure, it should be used in patients whose lives are considerably impaired despite standard clinical care. The indication for use of ProAmatine® in the treatment of symptomatic orthostatic hypotension is based primarily on a change in a surrogate marker of effectiveness, an increase in systolic blood pressure measured one minute after standing, a surrogate marker considered likely to correspond to a clinical benefit. At present, however, clinical benefits of ProAmatine®, principally improved ability to carry out activities of daily living, have not been verified.


Name: ProAmatine® (midodrine hydrochloride) Tablets

Dosage Form: 2.5-mg, 5-mg and 10-mg tablets for oral administration

Active Ingredient: Midodrine hydrochloride, 2.5 mg, 5 mg and 10 mg

Inactive Ingredients: Colloidal Silicone Dioxide NF, Corn Starch NF, FD&C Blue No. 2 Lake (10-mg tablets), FD&C Yellow No. 6 Lake (5-mg tablet), Magnesium Stearate NF, Microcrystalline Cellulose NF, Talc USP

Pharmacological Classification: Vasopressor/Antihypotensive Chemical Names (USAN: Midodrine Hydrochloride): (1) Acetamide, 2-amino-N-[2-(2,5dimethoxyphenyl)-2-hydroxyethyl]-monohydrochloride, (±)-; (2) (±)-2-amino-N-(-hydroxy-2,5-dimethoxyphenethyl)acetamide monohydrochloride BAN, INN, JAN: Midodrine

Structural formula:

ProAmatine® (midodrine hydrochloride) Structural Formula Illustration

Molecular formula: C12H18N2O4HCl; Molecular Weight: 290.7 Organoleptic Properties: Odorless, white, crystalline powder


Water: Soluble

Methanol: Sparingly soluble

pKa: 7.8 (0.3% aqueous solution) pH: 3.5 to 5.5 (5% aqueous solution)

Melting Range: 200 to 203°C

What are the possible side effects of midodrine (ProAmatine)?

In some cases, midodrine may cause an excessive increase in blood pressure, especially when lying down. Contact your doctor immediately or seek emergency medical attention if you experience an unusual awareness of heartbeats, pounding in the ears, headache, or blurred vision. These may be signs of increased blood pressure.

In some cases, increased blood pressure may cause a slowed heart rate. Contact your doctor immediately or seek emergency medical attention if you experience decreased pulse rate, increased dizziness, fainting, or an unusual awareness of heartbeats. These may be...

Read All Potential Side Effects and See Pictures of Proamatine »

What are the precautions when taking midodrine hydrochloride (Proamatine)?

Before taking midodrine, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.

This medication should not be used if you have certain medical conditions. Before using this medicine, consult your doctor or pharmacist if you have: high blood pressure, pheochromocytoma, thyroid disease (severe hyperthyroidism), severe difficulty urinating (due to urinary retention or an enlarged prostate).

Before using this drug, tell your doctor your entire medical history, including: heart disease, liver disease, kidney disease, diabetes.

Get up slowly to reduce dizziness when rising from a sitting or...

Read All Potential Precautions of Proamatine »

Last reviewed on RxList: 2/27/2017
This monograph has been modified to include the generic and brand name in many instances.

Proamatine - User Reviews

Proamatine User Reviews

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Report Problems to the Food and Drug Administration


You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.

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