Levothyroxine Sodium
Levothyroxine Sodium 50MCG
What is Levothyroxine Sodium?
Levothyroxine sodium is the most prescribed medication in the United States — a synthetic form of the thyroid hormone thyroxine (T4) used to treat hypothyroidism (underactive thyroid) and to suppress TSH in thyroid cancer management. When the thyroid gland does not produce enough hormone, it affects nearly every organ system in the body — causing fatigue, weight gain, depression, cold intolerance, and more. Levothyroxine replaces the missing T4, restoring normal metabolism. Levothyroxine is taken once daily on an empty stomach (30–60 minutes before eating) for maximum absorption. Doses are highly individualized based on age, weight, TSH level, and whether thyroid cancer suppression is needed — typically ranging from 25 mcg to 200+ mcg per day. A licensed provider can order thyroid labs and prescribe levothyroxine through Rx.com for hypothyroidism management.Side Effects
- Seizures or tremors
- Fast, pounding, or uneven heartbeat
- Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing
Warnings
- Keep all medicine out of the reach of children. Never share your medicine with anyone.
- Tell your doctor if you are pregnant or breastfeeding, or if you have kidney disease, liver disease, heart or blood vessel disease, anemia, blood clotting problems, diabetes, osteoporosis, pituitary gland problems, or adrenal gland problems. Tell your doctor if you have recently received radiation treatment with iodine.
- This medicine may cause the following problems:Heart problems, including angina (chest pain), heart rhythm problemsLow bone density
- This medicine should not be used to treat obesity or as part of a treatment plan for a weight control program.
- Tell any doctor or dentist who treats you that you are taking this medicine.
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Levothyroxine Sodium 50MCG : Tablet - 60
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- Seizures or tremors
- Fast, pounding, or uneven heartbeat
- Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing
- Chest pain that may spread, trouble breathing, unusual sweating, fainting
- Confusion, swelling of the face, tongue, or lower legs, feeling cold, unusual tiredness or weakness
- Dizziness, lightheadedness, stomach pain
- Severe headache, blurred or double vision, nausea, vomiting (in children)
- Walking with a limp, knee or hip pain (in children)
- Keep all medicine out of the reach of children. Never share your medicine with anyone.
- Tell your doctor if you are pregnant or breastfeeding, or if you have kidney disease, liver disease, heart or blood vessel disease, anemia, blood clotting problems, diabetes, osteoporosis, pituitary gland problems, or adrenal gland problems. Tell your doctor if you have recently received radiation treatment with iodine.
- This medicine may cause the following problems:Heart problems, including angina (chest pain), heart rhythm problemsLow bone density
- This medicine should not be used to treat obesity or as part of a treatment plan for a weight control program.
- Tell any doctor or dentist who treats you that you are taking this medicine.
- Do not stop using this medicine suddenly. Your doctor will need to slowly decrease your dose before you stop it completely.
- Your doctor will do lab tests at regular visits to check on the effects of this medicine. Keep all appointments.
Levothyroxine Sodium Coupons & Prices
Levothyroxine Sodium 50MCG
What is Levothyroxine Sodium ?
Levothyroxine sodium is the most prescribed medication in the United States — a synthetic form of the thyroid hormone thyroxine (T4) used to treat hypothyroidism (underactive thyroid) and to suppress TSH in thyroid cancer management. When the thyroid gland does not produce enough hormone, it affects nearly every organ system in the body — causing fatigue, weight gain, depression, cold intolerance, and more. Levothyroxine replaces the missing T4, restoring normal metabolism. Levothyroxine is taken once daily on an empty stomach (30–60 minutes before eating) for maximum absorption. Doses are highly individualized based on age, weight, TSH level, and whether thyroid cancer suppression is needed — typically ranging from 25 mcg to 200+ mcg per day. A licensed provider can order thyroid labs and prescribe levothyroxine through Rx.com for hypothyroidism management.
Prescriptions & Refills
Get this medication and other prescriptions or refills online with same-day video visits — sent straight to your pharmacy. HSA & FSA-eligible.
What Is Levothyroxine Sodium?
Levothyroxine sodium (brands: Synthroid, Levoxyl, Tirosint) is a synthetic thyroid hormone identical to the T4 hormone naturally produced by the thyroid gland. It is the standard treatment for hypothyroidism and for TSH suppression following thyroid cancer treatment. As the most prescribed drug in the US (over 100 million prescriptions annually), it is a cornerstone of primary care endocrinology.
What Does Levothyroxine Treat?
- Primary hypothyroidism — from Hashimoto's thyroiditis, thyroid removal, radioiodine therapy, or congenital hypothyroidism
- Secondary/tertiary hypothyroidism — pituitary or hypothalamic disorders causing low TSH
- Thyroid cancer — post-thyroidectomy TSH suppression to reduce recurrence risk
- Subclinical hypothyroidism — elevated TSH with normal T4; treated based on symptoms and risk factors
How Does Levothyroxine Work?
T4 (levothyroxine) is a prohormone — it is converted in peripheral tissues to T3 (triiodothyronine), the more biologically active thyroid hormone. T3 binds to thyroid hormone receptors in the cell nucleus, regulating gene expression and controlling basal metabolic rate, heart rate, thermogenesis, protein synthesis, and nervous system development.
Dosage Overview
- Adults (hypothyroidism): 1.6 mcg/kg/day as a starting estimate; commonly 50–200 mcg/day
- Elderly or cardiac patients: Start at 12.5–25 mcg/day and titrate slowly
- Thyroid cancer suppression: Higher doses to achieve TSH below target threshold
Take on an empty stomach, 30–60 minutes before food. Do not take with calcium supplements, iron, or antacids. Allow 6–8 weeks before checking TSH after a dose change.
Consistency Matters
Different brands and generics of levothyroxine may not be exactly bioequivalent. Once stabilized on a specific product, try to stay on the same brand/generic to maintain consistent TSH control.
Save on Levothyroxine
Generic levothyroxine is extremely affordable. With a free Rx.com coupon, a 30-day supply can cost as little as $4–$12.
Get Your Thyroid Managed Online
Thyroid management — including lab orders, dose adjustments, and prescription refills — can often be handled through telehealth. See a licensed provider on Rx.com for convenient thyroid care from home.