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(penbutolol sulfate) 20 mg
- Patient Information:
Details with Side Effects
levatol® (penbutolol sulfate) is a synthetic β-receptor antagonist for oral administration. The chemical name of penbutolol sulfate is (S)-l-tert-butylamino-3-(o-cyclopentylphenoxy)-2-propanol sulfate. It is provided as the levorotatory isomer. The empirical formula for penbutolol sulfate is C36H60N2O8S. Its molecular weight is 680.94. A dose of 20 mg is equivalent to 29.4 µmol. The structural formula is as follows:
Penbutolol is a white, odorless, crystalline powder, levatol® is available as tablets for oral administration. Each tablet contains 20 mg of penbutolol sulfate. It also contains corn starch, D&C Yellow No. 10, lactose, magnesium stearate, povidone, silicon dioxide, talc, titanium dioxide, synthetic black iron oxide, hypromellose, simethicone and other inactive ingredients.
What are the possible side effects of penbutolol (Levatol)?
Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.
Call your doctor at once if you have a serious side effect such as:
- slow or uneven heartbeats;
- feeling short of breath, even with mild exertion;
- swelling, rapid weight gain; or
- feeling like you might pass out.
Less serious side effects may include:
- feeling tired;
- nausea, diarrhea, upset stomach;
- decreased interest...
What are the precautions when taking penbutolol sulfate (Levatol)?
Before taking penbutolol, 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: certain types of heart rhythm problems (such as a slow heartbeat, second- or third-degree atrioventricular block), severe heart failure, breathing problems (such as asthma, chronic bronchitis, emphysema).
Before using this medication, tell your doctor or pharmacist your medical history, especially of: treated stable heart failure, kidney disease, liver disease,...
Last reviewed on RxList: 6/10/2011
This monograph has been modified to include the generic and brand name in many instances.
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