Definition of "levothyroxine" [levothyroxine]

• The synthetic form of the thyroid hormone, thyroxine (noun)

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• "You can try levothyroxine which is an alternative to Thyronorm."
• "Consider first the unapproved drug, orally administered levothyroxine sodium."
• "Caveat: Researchers were unable to measure some factors that might affect the association between levothyroxine and fracture risk, including body mass index, family history, smoking, caffeine or alcohol use and nonprescription drug use."