*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).
What are the possible side effects of levothyroxine (Levothroid, Levoxyl, Synthroid, Tirosint, Unithroid)? Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat. Call your doctor at once if you have a serious side effect such as: headache;
A: Usually, when taking levothyroxine the side effect is weight loss rather than weight gain. This occurs because the thyroid hormone is what regulates metabolism. If you are hypothyroid, your metabolism is slower since you don't have as much thyroid hormone in your body.: Levothyroxine is a synthetic or man-made replacement for a hormone that is normally produced by the thyroid gland to regulate the body's energy and metabolism. It is used to treat hypothyroidism (low thyroid hormone levels) and to treat and prevent goiter (an enlarged thyroid gland).