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Generic Name
Trade Name
Risk Category
  • Adequate and well-controlled studies have failed to demonstrate risk on fetus.
  • Possibility of fetal harm seems appears remote.
FDA Pregnancy Risk Categories

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  • thyroid hormone for treatment of hypothyroidism.
  • Fetal Risk
    Fetal Risk
  • Crosses the placenta in minimal amounts.
  • No adequate human data but suggested possible association with cardiovascular defects, down's syndrome and polydactyly in first trimester exposure.
  • The number of exposure was too small to make a conclusion.
  • Breast Feeding
    Breast Feeding
  • Excreted into milk in low concentration but not sufficient to protect a thyroid gland activity">hypothyroid infant and does not interfere with neonatal thyroid screening programs.
  • Other Trade Names
    The information on this Web site is not intended as a substitute for the advice and care of your doctor or other health-care provider. Always consult your doctor if you have any questions about exposures during pregnancy and lactation, and before you take any medications. Please read the Terms and Conditions before using this website.
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