Synthroid treats hypothyroidism (low thyroid hormone). Ask your health care provider if Synthroid may interact with other medicines that you take. Drug information contained herein may be time sensitive. Call your doctor at once if you have any of these serious side effects: headache; sleep problems (insomnia); nervous or thyroxine versus synthroid feeling; thyroxine versus synthroid hot flashes, sweating; changes in your menstrual periods; appetite changes, weight changes; Less serious side effects may include mild hair loss. Cardiac Glycosides Serum digitalis glycoside levels may be reduced in hyperthyroidism or when the hypothyroid patient thyroxine versus synthroid thyroxine versus synthroid to the euthyroid state. Call your doctor for medical advice about side effects. Drugs that may decrease T4 absorption, which may result in hypothyroidism Antacids - Aluminum & Magnesium Hydroxides - Simethicone Bile Acid Sequestrants - Cholestyramine - Colestipol Calcium Carbonate Cation Exchange Resins - Kayexalate Ferrous Sulfate Orlistat Sucralfate Concurrent use may reduce the efficacy of levothyroxine by binding and delaying or preventing absorption, potentially resulting in hypothyroidism.
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Symptoms of overstimulation: Abdominal cramps, anxiety, changes in appetite, change in menstrual periods, chest pain, diarrhea, emotional instability, fatigue, fever, flushing, hair loss, headache, heart attack or failure, heat intolerance, hyperactivity, increased heart rate, irregular heartbeat, irritability, muscle weakness, nausea, nervousness, palpitations, shortness of breath, sleeplessness, sweating, tremors, vomiting, weight loss Why should Synthroid not be prescribed? You should not be treated with Synthroid if you are hypersensitive to thyroid hormone; your thyroid gland is making too much thyroid hormone; you have had a recent heart attack; or your adrenal glands are not making enough corticosteroid hormone. Levothyroxine absorption is increased on an empty stomach. Levothyroxine side effects Stop using levothyroxine and get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, thyroxine versus synthroid tongue, or throat. However, three weeks after initiating treatment, the patient reported intermittent chest pains during the course of treatment, and a coronary artery angiogram revealed diffuse stenosis of all 3 branches. Store Synthroid at room temperature away from moisture and heat. However, data from long-term studies are conflicting. Do not take in larger or smaller amounts or for longer than recommended. thyroxine versus synthroid hormones cross the placental barrier to some extent as evidenced by levels in cord blood of athyreotic fetuses being approximately one-third maternal levels. If you use any of thyroxine versus synthroid following drugs, use them at least 4 hours before or 4 hours after you take levothyroxine: calcium carbonate (Caltrate, Citracal, Oystercal, and others); ferrous sulfate iron supplement; sucralfate (Carafate); sodium thyroxine versus synthroid sulfonate (Kayexalate, Kionex, and others); antacids thyroxine versus synthroid contain aluminum (Amphojel, Gaviscon, Maalox, Mylanta, Riopan, Rulox, Tums, and others); and cholesterol-lowering drugs cholestyramine (Questran) and colestipol (Colestid). Tell your doctor if your diet includes any of these foods. This drug does pass into breast milk, but it is not expected to be harmful to a nursing infant. Due to the long half-life of levothyroxine, the peak therapeutic effect at a given dose of levothyroxine sodium may not be attained for 4-6 weeks. There are many other medicines that can affect Synthroid. Pregnancy, infectious hepatitis, estrogens, estrogen-containing oral contraceptives, and acute intermittent porphyria increase TBG concentrations. Important safety information: Some brands of Synthroid may cause choking, gagging, or trouble swallowing. 6 D&C YELLOW NO. If the T4 is low and the TSH high, the diagnosis of permanent hypothyroidism is established, and levothyroxine therapy should be reinstituted.
Prothrombin time should be carefully monitored in patients taking levothyroxine and oral anticoagulants and the dose of anticoagulant therapy adjusted accordingly. Women taking daily doses of 1.6 mcg/kg or more had significantly lower bone mineral density levels at the ultradistal radius, midshaft radius, hip, and lumbar spine compared to controls. Do not stop or change your dose of Synthroid without first checking with your doctor. Overdose symptoms may include thyroxine versus synthroid pain, pounding heartbeat, tremor, shortness of breath, leg cramps, confusion, vomiting, diarrhea, or seizures. Synthroid is also used to treat or prevent goiter (enlarged thyroid gland), which can be caused by hormone imbalances, radiation treatment, surgery, or cancer. thyroxine versus synthroid time should be closely monitored to permit appropriate and timely dosage adjustments (see Table 2). TSH Suppression in Well-differentiated Thyroid Cancer and Thyroid Nodules The target level for TSH suppression in these conditions has not been established with controlled studies. Drug thyroxine versus synthroid contained herein may be time sensitive. Multum's drug information is an informational resource designed to assist licensed healthcare practitioners in caring for their patients and/or to serve consumers viewing this service as a supplement to, and not a substitute for, the expertise, skill, knowledge and judgment of healthcare practitioners. Calcium carbonate may form an insoluble chelate with levothyroxine, and ferrous sulfate likely forms a ferric-thyroxine complex.