Dosage is based on your age, weight, medical condition, laboratory test results, and response to treatment.
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Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor's approval.
Symptoms of low thyroid hormone levels include tiredness, muscle aches, constipation, dry skin, weight gain, slow heartbeat, or sensitivity to cold. l your doctor if your condition worsens or persists after several weeks of taking this medication.
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In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at.
Do not share this medication with others.
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If you are taking the capsule form of this medication, swallow it whole. Do not split, crush, or chew. People who cannot swallow the capsule whole (such as infants or small children) should use the tablet form of the medication.
Current information shows that this drug may be used during pregnancy. l your doctor if you are pregnant because your dose may need to be adjusted.
Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
In the US.
Levothyroxine is used to treat an underactive thyroid ( hypothyroidism ). It replaces or provides more thyroid hormone, which is normally produced by the thyroid gland. Low thyroid hormone levels can occur naturally or when the thyroid gland is injured by radiation/medications or removed by surgery. Having enough thyroid hormone is important for maintaining normal mental and physical activity. In children, having enough thyroid hormone is important for normal mental and physical development.
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If you miss a dose, take it as soon as you remember. If it is near the time of the next dose, skip the missed dose and resume your usual dosing schedule. Do not double the dose to catch up unless your doctor ls you to do so. Call your doctor if you miss 2 or more doses in a row. Ask your doctor ahead of time what to do about a missed dose and follow your doctor's specific directions.
This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.
Some products that may interact with this drug include: "blood thinners" (such as warfarin), digoxin, sucroferric oxyhydroxide, theophylline.
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Levothyroxine passes into breast milk but is unlikely to harm a nursing infant. Consult your doctor before breast-feeding.
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This medication should not be used for weight loss. Normal doses of this medication will not work for weight loss, and large doses of this medication may cause serious, possibly fatal side effects, especially when taken with diet pills.
Do not flush medications down the toilet or pour them into a drain unless instructed to do so. Properly discard this product when it is expired or no longer needed. Consult your pharmacist or local waste disposal company for more details about how to safely discard your product.
Get medical help right away if any of these rare but serious effects of high thyroid hormone levels occur: chest pain, fast/pounding/ irregular heartbeat, swelling hands/ ankles / feet, seizures.
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Before using this medication, l your doctor or pharmacist your medical history, especially of: increased thyroid hormones (thyrotoxicosis), decreased adrenal gland function, heart disease (such as coronary artery disease, irregular heartbeat), high blood pressure, diabetes.
Take this medication by mouth as directed by your doctor, usually once daily on an empty stomach, 30 minutes to 1 hour before breakfast. Take this medication with a full glass of water unless your doctor directs you otherwise.
GENERIC NAME(S): LEVOTHYROXINE SODIUM.
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Use this medication regularly in order to get the most benefit from it. To help you remember, take it at the same time each day.
Laboratory and/or medical tests (such as thyroid function tests) should be performed periodically to monitor your progress or check for side effects. Consult your doctor for more details.
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CONDITIONS OF USE: The information in this database is intended to supplement, not substitute for, the expertise and judgment of healthcare professionals. The information is not intended to cover all possible uses, directions, precautions, drug interactions or adverse effects, nor should it be construed to indicate that use of a particular drug is safe, appropriate or effective for you or anyone else. A healthcare professional should be consulted before taking any drug, changing any diet or commencing or discontinuing any course of treatment.
Enter the shape, color, or imprint of your prescription or OTC drug. Our pill identification tool will display pictures that you can compare to your pill.
Store at room temperature away from light and moisture. Do not store in the bathroom. Keep all medications away from children and pets.
This medication should not be used to treat infertility unless it is caused by low thyroid hormone levels.
Certain medications ( cholestyramine, colestipol, colesevelam, antacids, sucralfate, simethicone, iron, sodium polystyrene sulfonate, calcium supplements, orlistat ) can decrease the amount of thyroid hormone that is absorbed by your body. If you are taking any of these drugs, separate them from this medication by at least 4 hours.
Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.
Before having surgery, l your doctor or dentist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products).
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Before taking levothyroxine, l your doctor or pharmacist if you are allergic to it; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.
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Do not stop taking this medication without first consulting with your doctor. Thyroid replacement treatment is usually taken for life.
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l your doctor immediay if any of these unlikely but serious effects of high thyroid hormone levels occur: increased sweating, sensitivity to heat, mental/mood changes (such as nervousness, mood swings), tiredness, diarrhea, shaking (tremor), headache, shortness of breath.
If overdose is suspected, contact a poison control center or emergency room immediay. US residents can call their local poison control center at. Canada residents can call a provincial poison control center. Symptoms of overdose may include: fast/pounding/irregular heartbeat, loss of consciousness, confusion, seizures.
A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including: rash, itching /swelling (especially of the face/ tongue /throat), severe dizziness, trouble breathing.
For infants or children who cannot swallow whole tablets, crush the tablet and mix in 1 to 2 teaspoons (5 to 10 milliliters) of water, and give using a spoon or dropper immediay. Do not prepare a supply in advance or mix the tablet in soy infant formula. Consult your pharmacist for more information.
This medication is also used to treat other types of thyroid disorders (such as certain types of goiters, thyroid cancer ).
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There are different brands of levothyroxine available. Do not change brands without first consulting your doctor or pharmacist.
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Hair loss may occur during the first few months of treatment. This effect is usually temporary as your body adjusts to this medication. If this effect persists or worsens, l your doctor or pharmacist promptly.
What is eltroxin used for