What Happens If You Take Too Much Thyroid Medication?

Taking too much thyroid medication can have serious and even life-threatening effects on human health; side effects of over-replacement of thyroid hormone via thyroid medication include rapid or irregular heartbeat, muscle weakness, irritability, tremors, weight loss, chest pain, shortness of breath, nervousness, sleeplessness, change in appetite, vomiting, excess perspiration, frequent bowel movements, fever, heat intolerance, impaired fertility, menstrual changes, decreased bone density and other unusual medical problems, notes Synthroid. Medications for replacing thyroid hormones in the human body should be used only as prescribed.

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