May impair vit B12 absorption. Increased plasma levels with strong CYP2C8 inhibitors (e.g. gemfibrozil). Decreased plasma levels with CYP2C8 inducers (e.g. rifampicin). Reduced metabolism with cationic drugs eliminated by renal tubular secretion.
Generally this combined preparation is well tolerated. However, the most common side effects are upper respiratory tract infection, diarrhea, peripheral edema and headache, respectively. These are mild in severity.
Pregnancy: There are no adequate and well-controlled studies in pregnant women with this combination or its individual components. So, it should only be used if the potential benefit justifies the potential risk to the fetus.
Nursing mother: It is not known whether Pioglitazone and/or Metformin are secreted in human milk. Because many drugs are excreted in human milk, this combination should not be administered to a breastfeeding woman.
Pioglitazone exerts its antihyperglycemic effect only in the presence of insulin. Therefore, Pioglitazone should not be used in patients with type 1 diabetes or for the treatment of diabetic ketoacidosis. Pioglitazone should be used with caution in combination especially with insulin, hepatic insufficiency and heart diseases.
Metformin is known to be substantially excreted by the kidney and the risk of Metformin accumulation and lactic acidosis increases with the degree of impairment of renal function. Thus patients with serum creatinine levels above the upper limit of normal for their age should not receive this combination.
The initial and maintenance dose of Pioglitazone & Metformin should be carefully selected in patients with advanced age due to the potential for decreased renal function in these populations. Monitoring of renal function is necessary to aid in prevention of Metformin associated lactic acidosis, particularly in the elderly. Pioglitazone & Metformin should not be initiated if the patients exhibit clinical evidence of active liver disease. Liver enzyme monitoring is recommended in all patients prior to initiation of therapy with combination of Pioglitazone and Metformin and periodically thereafter.
In the event of Overdosage, appropriate supportive treatment should be initiated according to patient's clinical signs and symptoms.
Combination Oral hypoglycemic preparations
Store in a cool and dry place. Protect from light and moisture. Keep out of the reach of the children.