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VoSpire ER®
(Albuterol Sulfate) Extended-Release Tablets

DRUG DESCRIPTION

Albuterol extended-release tablets contain albuterol sulfate, the racemic form of albuterol and a relatively selective beta2-adrenergic bronchodilator, in an extended-release formulation. Albuterol sulfate has the chemical name (±) α1-[(tert-butylamino)methyl]-4-hydroxy-m-xylene-α, α-diol sulfate (2:1) (salt), and the following structural formula:

VoSpire ER® (Albuterol Sulfate) Structural Formula Illustration

Albuterol sulfate has a molecular weight of 576.7, and the molecular formula is (C13H21NO3)2•H2SO4. Albuterol sulfate is a white crystalline powder, soluble in water and slightly soluble in ethanol.

The World Health Organization recommended name for albuterol base is salbutamol.

Each tablet for oral administration contains 4 mg or 8 mg of albuterol as 4.8 mg or 9.6 mg, respectively, of albuterol sulfate in a cellulosic material that serves as a diffusion-release membrane. In addition each tablet contains the following inactive ingredients: Calcium sulfate, carnauba wax, ethylcellulose, ferric oxide black, hypromellose, ink-thinner XI, lactose monohydrate, magnesium stearate, polyethylene glycol, propylene glycol, shellac, stearic acid, titanium dioxide, triacetin, D&C Yellow #10, (4 mg only) and FD&C Blue #1 (4 mg only).

What are the precautions when taking albuterol sulfate extended-release tablets (VoSpire ER)?

Before taking albuterol, tell your doctor or pharmacist if you are allergic to it; or if you have had a serious reaction to similar drugs (e.g., metaproterenol, terbutaline); 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.

Before using this medication, tell your doctor or pharmacist your medical history, especially of: heart problems (e.g., irregular heartbeat, angina, heart attack), high blood pressure, diabetes, low levels of potassium in the blood, seizure, overactive thyroid (hyperthyroidism).

This drug may make you dizzy. Do not drive, use machinery, or do any activity that requires alertness until you are sure you can perform such...

Read All Potential Precautions of VoSpire ER »

Last reviewed on RxList: 8/8/2008
This monograph has been modified to include the generic and brand name in many instances.