Synthroid contains levothyroxine sodium, a substance identical to the thyroid gland hormone. It is used either alone or in combination with diet pills to treat primary (thyroidal), secondary (pituitary), tertiary (hypothalamic) hypothyroidism, subclinical hypothyroidism, and obesity.
Dosage and direction
The dose is be administered individually. Follow all recommendations of your doctor, do not exceed the recommended dose. Take it as a single daily dose 0.5-1.0 hour before breakfast with a full glass of water. Intake of Levothroid and the medications known to interfere with its absorption should be separated by at least four hours. Do not stop treatment without permission of your doctor even if you do not feel immediate effect. It may take several weeks till the medication starts to act. Yo may need Levothroid till the end of your life to replace the thyroid hormone deficit.
Cautiousness should be exercised in treatment of the patients with cardiovascular disease, elderly, individuals with concomitant adrenal insufficiency.
Synthroid cannot be used in patients with untreated subclinical or overt thyrotoxicosis, acute myocardial infarction, and uncorrected adrenal insufficiency.
Possible side effect
The most likely adverse reactions to occur are headache, insomnia, nervous or irritable feeling, hyperactivity, anxiety, emotional lability, fever, tachycardia, arrhythmias, hot flashes, sweating, changes in your menstrual periods, appetite changes, diarrhea, vomiting, weight changes, hair loss, flushing.
Inform your doctor about all medications, herbal products and food supplements you use and especially about calcium carbonate (Oystercal, Caltrate, Citracal), sodium polystyrene sulfonate (Kayexalate, Kionex), ferrous sulfate iron supplement, sucralfate (Carafate), antacids that contain aluminum (Rulox, Tums, Maalox, Mylanta, Riopan, Amphojel, Gaviscon), cholesterol-lowering drugs colestipol (Colestid) and cholestyramine (Questran), warfarin, digoxin, estrogen products, diabetes medicines, amiodarone, iodide, lithium, anti-thyroid agents, phenobarbital, rifamycins, beta blockers, antidepressants and growth hormones.
If you missed a dose take it as soon as you remember, but not if it is almost time of the next intake by your schedule. Skip the missed dose if it is almost time of your next dose. Do not try to compensate a missed dose by taking an extra one.
Overdose symptoms include pounding heartbeat, chest pain, tremor, leg cramps, confusion and disorientation, shortness of breath, vomiting, diarrhea, or seizures. Contact your doctor on emergency if you experience them.
Store at room temperature between 59-77 F (15-25 C) away from light and moisture, kids and pets. Do not use after expiration term.
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