Special information if you are pregnant or breastfeeding If you need to take Synthroid because of a thyroid hormone deficiency, you can continue to take Synthroid during pregnancy. Do not switch to another brand of levothyroxine without consulting your doctor. Drugs that may decrease T4 5'-deiodinase activity Amiodarone Beta-adrenergic antagonists - synthroid gluten free Propranolol > 160 mg/day) Glucocorticoids - (e.g., Dexamethasone ≥ 4 mg/day) Propylthiouracil (PTU) Administration of these enzyme inhibitors decreases the peripheral conversion of T4 to T3, leading to decreased T3 levels. Therefore, it is recommended that patients receiving levothyroxine sodium be given the minimum dose synthroid gluten free to achieve the desired clinical and biochemical response. Adverse Reactions Adverse reactions associated with levothyroxine therapy are primarily those of hyperthyroidism due to therapeutic overdosage (see PRECAUTIONS and OVERDOSAGE ).
synthroid and iodine
Tell any doctor or dentist who treats you that you are using levothyroxine. 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. ('Multum') is accurate, up-to-date, and complete, but no guarantee is made to that effect. It's advisable to check with your doctor before taking any other drug, but you should be especially wary of the following: Amiodarone (Cordarone) Androgens (male hormones) Antacids and anti-gas medications Antidepressants such as Elavil, Ludiomil, and Zoloft Blood pressure drugs such as beta blockers, nitroprusside, and thiazide diuretics Blood-thinning drugs such as Coumadin and heparin Chloral hydrate (a sedative) Diabetes drugs such as insulin and Micronase Digitalis-type drugs such as Lanoxin Estrogen products and oral contraceptives Furosemide (Lasix) Growth hormones Hormone inhibitors such as Cytadren and Tapazole Iodide Iron supplements Kayexalate Ketamine (Ketalar) Lithium (Eskalith, Lithobid) Methadone and heroin Metoclopramide (Reglan) Nonsteroidal anti-inflammatory drugs such as phenylbutazone and aspirin Parkinson's drugs such as Sinemet Propylthiouracil (a thyroid inhibitor) Seizure medications such as Dilantin, Tegretol, and phenobarbital Steroids such as dexamethasone and hydrocortisone Stimulants such as epinephrine (EpiPen) Sucralfate (Carafate) The cancer drugs 5-fluorouracil, 6-mercaptopurine, mitotane, and tamoxifen The cholesterol-lowering drugs Colestid, Mevacor, and Questran The immune-system drugs interferon and synthroid gluten free The tranquilizers Trilafon and Valium The tuberculosis drugs aminosalicylate, rifampin, and ethionamide Theophylline (Theo-Dur) A high-fiber diet, soy-containing supplements, and walnuts can also interfere with Synthroid effects. Follow your doctor's dosing instructions and try to take this medication at the same time each day. Administer levothyroxine at least 4 hours apart from these agents. In the treatment of benign nodules and nontoxic multinodular goiter, TSH synthroid gluten free generally suppressed to a higher target (e.g., 0.1 to either 0.5 or 1.0 mU/L) than that used for the treatment of thyroid cancer. Concomitant use of these agents impairs the compensatory increases in clotting factor synthesis. People with very serious conditions caused by too little thyroid hormone may need higher doses. Children—The dose is based on body weight and must be determined by your doctor . Precautions While Using Synthroid It is very important that your doctor check your progress at regular visits. Every effort has been made to ensure that the information provided by Cerner Multum, Inc. If not contraindicated (e.g., by seizures, coma, or loss of the gag reflex), the stomach should be emptied by emesis or gastric lavage to decrease gastrointestinal absorption. 40 FD&C BLUE NO. Some brands of Synthroid must be taken with a full glass of water (8 oz/240 mL). No COMMON side effects have been reported with the use of Synthroid . When synthroid gluten free optimum replacement dose has been attained, clinical (physical examination) and biochemical monitoring may be performed every 6-12 months, depending on the clinical situation, and whenever there is a change in the patient's status. Synthroid Dosage and Administration General Principles synthroid gluten free goal of replacement therapy is to achieve and maintain a clinical and biochemical euthyroid state. Drugs that may decrease T4 5'-deiodinase activity synthroid gluten free Beta-adrenergic antagonists - (e.g., Propranolol > 160 mg/day) Glucocorticoids - (e.g., Dexamethasone ≥ 4 mg/day) Propylthiouracil (PTU) Administration of these enzyme inhibitors decreases the peripheral conversion of T4 to T3, leading to decreased T3 levels. Synthroid is to be used only by the patient for whom it is prescribed. 40 Aluminum Lake, FD&C Blue No. synthroid gluten free Synthroid away from heat, moisture, and light.
Thyroid hormones cross the placental barrier to some extent as evidenced by levels in cord blood of athyreotic fetuses being approximately one-third maternal levels. Different brands of levothyroxine may not work the same. The protein anabolic effects of thyroid hormones are essential to normal growth and development. Other Associated Medical Conditions Infants with congenital hypothyroidism appear to be at increased risk for other congenital anomalies, with cardiovascular anomalies synthroid gluten free stenosis, atrial septal defect, and ventricular septal defect) being the most common association. Table 1. A 38-year-old female experienced with severe hypothyroidism experienced myxedema coma and cardiac ischemia coincident with levothyroxine therapy. A study evaluated the effect of long-term thyroid hormone therapy on bone mineral density in 196 women (mean age, 74.4 years) compared to a control group comprised of 795 women (mean age, 72.1 synthroid gluten free synthroid gluten free sodium doses greater than 200 mcg/day are seldom required. Each tablet contains 100 mcg (0.1 mg) levothyroxine sodium. In euthyroid patients, doses within the range of daily hormonal requirements are ineffective for weight reduction. Radiographic Agents Thyroid hormones may reduce the uptake of 123I, 131I, and 99mTc. The presence of concomitant medical conditions should be considered in certain clinical circumstances and, if present, appropriately treated (see PRECAUTIONS ). This may not be a complete list of all interactions that may occur. Skip the missed dose if it is almost time for your next scheduled dose. Even if you feel well, you may still need to take this medicine every day for the rest of your life to replace the thyroid hormone your body cannot produce.