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Levothyroxine 25 mcg tablets What is levothyroxine and what is it used for? Levothyroxine is a thyroid hormone medication used to replace the lack of thyroid hormone available in your body. It is used to treat the following conditions:
Levothyroxine 25 mcg Tablets
What is levothyroxine and what is it used for?
Levothyroxine is a thyroid hormone medication used to replace the lack of thyroid hormone available in your body. It is used to treat the following conditions:
• Hypothyroidism, a medical condition that causes your thyroid gland to produce less thyroid hormone than normal. The function of thyroid hormone is to regulate your metabolism. Symptoms of hypothyroidism include: cold intolerance, muscle pain, hair loss, a deepened voice, fatigue, weight gain, and dry, scaly skin.
• Tumors that respond to TSH (a type of thyroid tumor).
Do not take levothyroxine.
• If you are allergic to levothyroxine or any other ingredients in this medication. Tell your doctor about the symptoms you experience.
• If you have uncorrected adrenal insufficiency (underactive adrenal glands located in your kidneys).
Warnings and Precautions
• Talk to your doctor or pharmacist if you experience allergic reactions such as shortness of breath, skin rash, swelling of the face or neck, low blood pressure, or dizziness.
• Talk to your doctor if you experience any signs or symptoms of heart problems such as shortness of breath, fatigue with exertion, chest pain, peripheral swelling, or a fast or slow heart rate. Be sure to tell your doctor about any heart disease you have.
• Your doctor may recommend periodic thyroid hormone tests to ensure your levels are normal.
• Be sure to tell your doctor about any adrenal gland problems you have before starting this medication.
• This medication may affect your blood glucose levels if you have diabetes (high blood sugar). Your diabetes medication dose may need to be adjusted and your blood glucose levels monitored regularly.
• This medication may negatively affect your bone density if you take a higher dose than directed.
Possible Side Effects of Levothyroxine
Possible side effects of levothyroxine include hyperthyroidism if overdosed, such as: increased blood pressure or heart rate, shortness of breath, fatigue with exertion, chest pain, peripheral swelling, palpitations, cramps, fatigue, weight loss, loss of appetite, heat intolerance, fever, sweating, headache, anxiety, nervousness, muscle weakness, tremors, difficulty breathing, diarrhea, abdominal pain, vomiting, increased liver enzymes, hair loss and rash, decreased body mass, weakness, decreased fertility, and irregular menstrual periods.
Other Medications and Levothyroxine
Tell your doctor or pharmacist if you are taking, have recently taken, or might take any of the following medications:
• If you are taking calcium or iron supplements.
• If you are taking orlistat (used for constipation).
• If you are taking bile acid sequestrants (used to treat high cholesterol levels).
• If you are taking ion exchange resins (used to treat abnormal electrolyte levels).
• If you are taking proton pump inhibitors, sucralfate, or antacids (used to treat excess stomach acid).
• If you are taking simethicone (used to treat bloating).
• If you are taking birth control pills that contain estrogen.
• If you are taking clofibrate (used to lower triglyceride and cholesterol levels).
• If you are taking steroids.
• If you are taking carbamazepine, phenobarbital, or phenytoin (used for seizures).
• If you are taking furosemide (a diuretic).
• If you are taking rifampin (used to treat tuberculosis).
• If you are taking beta-blockers (used to treat high blood pressure and certain heart problems).
• If you are taking amiodarone (used to treat irregular heartbeat).
• If you are taking diabetes medications.
• If you are taking blood thinners.
• If you are taking digoxin (used to treat certain heart problems).
• If you are taking antidepressants.
• If you are taking tyrosine kinase inhibitors (used to treat certain cancers).
How to take levothyroxine
Adults:
The general recommended starting dose is 1.6 micrograms/kg/day. The dose is adjusted in increments of 25–12.5 micrograms every 4–6 weeks until normal thyroid hormone levels are achieved. Thyroxine levels are then checked every 6–12 months thereafter. The starting dose is not fixed and may change depending on the indication and its severity. Pregnant women may also require higher doses depending on their thyroid hormone levels.
Children:
Doses are based on weight. Take your dose as prescribed by your doctor. Careful monitoring of thyroid hormone levels is required every 2–4 weeks until normal levels are reached and every 3–12 months thereafter until growth is complete.
• Take the tablet as a single daily dose.
• Take on an empty stomach, half an hour to an hour before breakfast.
• Take the tablets at least 4 hours before or after calcium or iron supplements and antacids.
• Take the tablet with a full glass of water.
How to store levothyroxine
• Store the medicine at a temperature between 15 and 30°C.
• Keep the medicine out of reach of children and pets.
• Do not use the medicine after the expiry date shown on the carton.
• Store the medicine in its original container to protect it from moisture.
• Do not take damaged pills.
• Do not dispose of the medicine via wastewater or household waste.
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