Before you begin using a medication, be sure to inform your doctor of any medical conditions or allergies you may have, any medications you are taking, whether you are pregnant or breast-feeding, and any other significant facts about your health. These factors may affect how you should use this medication.
Hypothyroidism: Your dose of propylthiouracil will be reduced or temporarily discontinued by your doctor if signs of hypothyroidism (such as weight gain, clumsiness, and intolerance of cold temperatures) occur during treatment.
Kidney problems: If you have kidney problems, discuss with your doctor how this medication may affect your medical condition, how your medical condition may affect the dosing and effectiveness of this medication, and whether any special monitoring is needed.
Medical symptoms: Contact your doctor if fever, sore throat, unusual bleeding or bruising, or skin rash occur while using this medication.
Size of thyroid gland: Tell your doctor if the size of your thyroid gland increases during treatment with propylthiouracil. You may need a lower dose of the medication.
Pregnancy: This medication should not be used during pregnancy unless the benefits outweigh the risks. If you become pregnant while taking this medication, contact your doctor immediately.
Breast-feeding: This medication passes into breast milk. If you are a breast-feeding mother and are taking propylthiouracil, it may affect your baby. Women who take propylthiouracil should not breast-feed.