These drugs may also have adverse pharmacological effects. There are no controlled data in human pregnancy.ĪU TGA pregnancy category D: Drugs which have caused, are suspected to have caused or may be expected to cause, an increased incidence of human fetal malformations or irreversible damage. In humans, use of drugs that act on the renin angiotensin system (RAS) during the second and third trimesters increases fetal and neonatal morbidity and death. US: This drug should not be used during pregnancy unless there are no alternatives and the benefit outweighs the risk to the fetus.Ĭomments: Adequate methods of contraception should be encouraged.Īnimal studies have revealed evidence of fetal and neonatal toxicity and mortality.
UK: Use is not recommended during the first trimester of pregnancy and is contraindicated during the second and third trimesters. Both options are free, confidential, and available 24 hours a day.The following applies to the ingredients: Help from Poison Control is available online at by phone at 1-80. If someone takes too much levothyroxine or takes it accidentally, get guidance from Poison Control immediately. What to do if someone takes too much levothyroxine or takes it by accident Take levothyroxine 30–60 minutes before breakfast. Levothyroxine is best taken on an empty stomach in the morning. Symptoms of levothyroxine overdose include irregular heartbeat, headache, anxiety, agitation, shaking, fatigue, confusion, and disorientation. If someone takes too much levothyroxine, symptoms might not occur for several days. Levothyroxine toxicity is rare, but it can sometimes occur accidentally, especially in children. What happens if you take too much levothyroxine? Because of this, people should not take over-the-counter weight loss supplements. These dietary supplements can contain varying amounts of thyroid hormones, which can be dangerous and cause adverse effects. Thyroid hormones can also be present illicitly in some over-the-counter weight loss products. Some people might use their levothyroxine prescriptions for this reason, but it’s important to know that the use of levothyroxine for weight loss can result in dangerous and potentially life-threatening side effects. Thyroid hormones can increase the body’s metabolism and promote weight loss. Should I take levothyroxine for weight loss? Because thyroid function can fluctuate during pregnancy, a doctor might need to adjust the dosage of levothyroxine taken during pregnancy. Currently available studies have not demonstrated increased risk to the fetus in pregnant women taking levothyroxine.
Levothyroxine is safe to use during pregnancy. It’s generally safe to drink alcohol as long as the alcohol is not consumed at the same time as the levothyroxine dose. These interactions can be avoided if levothyroxine is taken at least 30–60 minutes before consuming any of these foods and beverages. To reduce the risk of impaired absorption, it’s recommended to take levothyroxine at least 4 hours before taking any of the medications listed above.Ĭonsumption of certain foods and beverages such as soybean flour, cotton seed meal, walnuts, grapefruit juice, coffee, and dietary fiber can decrease the absorption of levothyroxine. The most common medications are aluminum- and magnesium-containing antacids, calcium carbonate, iron, cholestyramine, sucralfate, and sevelamer. Levothyroxine interactions: What foods and medications should be avoided while taking levothyroxine?Ĭertain foods and medications can interfere with the absorption of levothyroxine.
Side effects can happen in the first months after starting levothyroxine until the body adjusts to it. Some common side effects of levothyroxine include fast heart rate, insomnia, fatigue, hair loss, and weight loss. What are the side effects of levothyroxine? Common brand names of levothyroxine in the US include Synthroid, Levoxyl, Unithroid, and Tirosint. In patients who have an underactive thyroid, there is not enough production of thyroid hormones and levothyroxine is prescribed to help maintain normal thyroid hormone function. Levothyroxine is a synthetic version of the main hormone of the thyroid gland, known as thyroxine (T4). The thyroid is a major gland in the body that is involved in important functions such as metabolism, growth, development, and regulation of body temperature. Levothyroxine is an oral medication used to treat underactive thyroid gland activity (hypothyroidism).
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