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Synthroid, the brand-name form of levothyroxine, is a prescription medication used to treat
an underactive thyroid, goiters, and thyroid cancer. Synthroid is a synthetic thyroid hormone,
which replaces the body's reduced levels of this natural thyroid hormone. This medication
comes in tablet form and is taken once in the morning on an empty stomach with a glass
of water. Common side effects of Synthroid include tremors, a change in appetite, and
irregular heartbeats. It's important not to take Synthroid unless prescribed by a doctor.
For RxWiki, I'm Lindsay Morrison.