Pregnancy Warnings

Methylphenidate Pregnancy and Breast Feeding Warnings

Methylphenidate is also known as: Concerta, Daytrana, Metadate CD, Metadate ER, Methylin, Methylin ER, Ritalin, Ritalin LA, Ritalin-SR

Overview

If you become pregnant, contact your doctor. You will need to discuss the benefits and risks of using Methylphenidate Controlled-Release Tablets while you are pregnant. It is not known if Methylphenidate Controlled-Release Tablets is found in breast milk. If you are or will be breast-feeding while you use Methylphenidate Controlled-Release Tablets, check with your doctor. Discuss any possible risks to your baby.

Methylphenidate Pregnancy Warnings

Methylphenidate has been assigned to pregnancy category C by the FDA. Adequate animal reproductive studies to establish the safe use of methylphenidate during pregnancy have not been conducted. There are no controlled data in human pregnancy. However, in the Michigan Medicaid Birth Defects Study involving 229,101 pregnancies from 1985 to 1992, there was one major cardiovascular birth defect reported out of 13 newborns who were exposed to methylphenidate during the first trimester. (One was expected.) (Written communication, Franz Rosa, MD, Food and Drug Administration, 1994) Methylphenidate is only recommended for use during pregnancy when benefit outweighs risk.

Methylphenidate Lactation Warnings

Methylphenidate is excreted into human milk. Adverse effects in the nursing infant are unlikely given a relatively low exposure. In one case, following a maternal daily dose of 40 mg twice daily, the milk-to-plasma ratio was 2.7. The relative infant dose was 0.2% of the weight- adjusted maternal dose and the absolute infant dose was 2.3 mcg/kg/day. Adverse effects were not detected in the infant. Caution is recommended if the drug is to be administered to a nursing woman.

In another case report, following a maternal dose of 5 mg in the morning and 10 mg at noon (immediate-release formulation), the mean milk/serum concentration ratio was 1.1 (range 0.8 to 1.6). The relative infant dose was 0.16% of the weight- adjusted maternal dose and the estimated absolute infant dose was 0.38 mcg/kg/day. Adverse effects were not observed in the infant.

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