Overview
Levothyroxine is a prescription drug approved by the Food and Drug Administration (FDA) to treat hypothyroidism and pituitary thyroid stimulating hormone suppression. In cases of polycystic ovary syndrome (PCOS), Levothyroxine may be prescribed to treat hormonal imbalances. Since Levothyroxine is not FDA-approved to treat PCOS, this usage may be considered “off-label.” Levothyroxine is sold under various brand names including Levothroid, Levoxyl, Synthroid, and Unithroid.
Levothyroxine is a synthetic thyroid hormone. Levothyroxine is believed to work by supplementing the amount of hormones the thyroid naturally produces.

How do I take it?
Prescribing information states that Levothyroxine is taken once a day.

Levothyroxine comes in tablet form.

Side effects
The FDA-approved label for Levothyroxine lists common side effects including headache, fatigue, nervousness, moodiness, flushed skin, muscle tremors or weakness, fast or irregular heartbeat, vomiting, diarrhea, abdominal cramps, irregular menstrual cycle, and impaired fertility.

Rare but serious side effects listed for Levothyroxine include seizures, decreased bone mineral density, and hypersensitivity reactions.

For more details about this treatment, visit:
Levothroid – RxList
http://www.rxlist.com/levothroid-drug.htm

Unithroid – Gemini Laboratories
http://unithroid.com/

Levoxyl – Pfizer
http://www.levoxyl.com/

Synthroid – AbbVie
https://www.synthroid.com/