*This statement summarizes the third USPSTF recommendations for screening for chlamydial infection and the supporting scientific evidence, and it updates the 1995 recommendations contained in the Guide to Clinical Preventive Services, second edition (1).
Older adults may be more sensitive to the side effects of this drug, especially fast/pounding/irregular heartbeat. Current information shows that this drug may be used during pregnancy. Tell your doctor if you are pregnant because your dose may need to be adjusted. Levothyroxine passes into breast milk but is unlikely to harm a nursing infant.
A: Depending on how high of a dose you are on, a double dose of levothyroxine can result in the following symptoms: anxiety, confusion or disorientation, heart palpitations-fast and/or forceful beats, irregular heart beats, high blood pressure, and at very high doses, seizures, strokes, coma, and death.: Levothyroxine (Levothroid, Levoxyl, Synthroid) is a thyroid supplement which is used to treat hypothyroidism (underactive thyroid). Levothyroxine does not have any common side effects when taken at correct doses.