Synthroid General Information 

Synthroid (levothyroxine) is used as a substitute for a hormone usually produced by the thyroid gland to maintain energy and metabolism.  When the thyroid gland is unable to produce enough of this hormone, Synthroid is given to sustain the balance.

Synthroid is used to treat hypothyroidism (low thyroid hormone) and to treat or prevent goiter (enlarged thyroid gland).  An enlarged thyroid gland can be caused by cancer, hormonal imbalances, radiation, or surgery.  With a doctor’s recommendation, it may used in the treatment of other medical conditions.

Like all medicines, Synthroid can have some side effects, although not all patients will be affected.  In most instances it will be considered a maintenance drug and will be used for the rest of the patient’s life.  Long term use of Synthroid can lead to bone loss or osteoporosis.

Synthroid has been classified as safe to use when pregnant or while breast-feeding.  It is passed through breast milk, but is not expected to harm a nursing baby.

Speak with your doctor prior to beginning a regimen of Synthroid regarding any medications you are currently taking.  Make sure to include any prescription drugs, herbal products, and over-the-counter medicines.  Some drugs can affect the action of Synthroid.

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