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OVERDOSE: If overdose is suspected, contact your local poison control center or emergency room immediately. US residents can call the US national poison hotline at 1-800-222-1222. Canadian residents should call their local poison control center directly. Symptoms of overdose may include: diarrhea, irregular heartbeat, headache, tremors, nervousness, stomach cramps, fever, chest pain, difficulty sleeping.

NOTES: There are different brands of thyroid hormones available. Do not change brands without first consulting your doctor or pharmacist. Lab tests may be done periodically to monitor the effectiveness of this medication.

MISSED DOSE: If you miss a dose, take as soon as remembered; do not take if it is almost time for the next dose, instead, skip the missed dose and resume your usual dosing schedule. Do not "double-up" the dose to catch up. Call your doctor if you miss 2 or more doses in a row.

STORAGE: Store at room temperature away from sunlight and moisture. Do not store in the bathroom.

Report Problems to the Food and Drug Administration   You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088. Need help identifying pills and medications? Use the pill identifier tool on RxList.