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CONGESTIVE HEART FAILURE
- Thiazolidinediones, including ACTOS, cause or exacerbate congestive heart failure in some patients [see WARNINGS AND PRECAUTIONS].
- After initiation of ACTOS, and after dose increases, monitor patients carefully for signs and symptoms of heart failure (e.g., excessive, rapid weight gain, dyspnea, and/or edema). If heart failure develops, it should be managed according to current standards of care and discontinuation or dose reduction of ACTOS must be considered.
- ACTOS is not recommended in patients with symptomatic heart failure.
- Initiation of ACTOS in patients with established New York HeartAssociation (NYHA) Class III or IV heart failure is contraindicated [see CONTRAINDICATIONS and WARNINGS AND PRECAUTIONS].
Pioglitazone [(±)-5-[[4-[2-(5-ethyl-2-pyridinyl) ethoxy] phenyl] methyl]-2,4-] thiazolidinedione monohydrochloride contains one asymmetric carbon, and the compound is synthesized and used as the racemic mixture. The two enantiomers of pioglitazone interconvert in vivo. No differences were found in the pharmacologic activity between the two enantiomers. The structural formula is as shown:
Pioglitazone hydrochloride is an odorless white crystalline powder that has a molecular formula of C19H20N2O3S•HCl and a molecular weight of 392.90 daltons. It is soluble in N,N-dimethylformamide, slightly soluble in anhydrous ethanol, very slightly soluble in acetone and acetonitrile, practically insoluble in water, and insoluble in ether.
ACTOS is available as a tablet for oral administration containing 15 mg, 30 mg, or 45 mg of pioglitazone (as the base) formulated with the following excipients: lactose monohydrate NF, hydroxypropylcellulose NF, carboxymethylcellulose calcium NF, and magnesium stearate NF.
What are the possible side effects of pioglitazone (Actos)?
Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
Stop using pioglitazone and call your doctor at once if you have any of these serious side effects:
- stomach pain, blood in your urine;
- painful urination;
- feeling short of breath, even with mild exertion;
- swelling or rapid weight gain;
- chest pain, general ill feeling;
- nausea, upper stomach pain, itching, loss of appetite, dark urine, clay-colored stools, jaundice (yellowing...
What are the precautions when taking pioglitazone hydrochloride (Actos)?
Before taking pioglitazone, 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.
Before using this medication, tell your doctor or pharmacist your medical history, especially of: heart disease (such as congestive heart failure, chest pain), liver disease, fluid in your lungs, swelling (edema), anemia, a certain eye problem (macular edema), bladder cancer.
You may experience blurred vision, dizziness, or drowsiness due to extremely low or high blood sugar levels. Do not drive, use machinery, or do any activity that requires alertness or clear vision until you are sure you can perform such...
Last reviewed on RxList: 11/25/2013
This monograph has been modified to include the generic and brand name in many instances.
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