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Prescription Drug Coverage

Levothyroxine (Euthyrox/Levo-T/Synthroid) Medicare Coverage

You may be able to find Medicare plan options in your area that cover Levothyroxine or Euthyrox. Learn more about Levothyroxine and find Medicare Advantage plans in your area that cover prescription drugs.
Chemical name: Levothyroxine

Brand name: Euthyrox, Levo-T, Synthroid

Typical dosage: 50mcg

Typical type: Tablet1

Levothyroxine is typically used to treat an underactive thyroid (hypothyroidism). It is available as a generic or as a brand name drug and is typically taken as an oral tablet..

Levothyroxine is a medication used to treat underactive thyroid, also called hypothyroidism. Brand name equivalents of Levothyroxine include Synthroid, Levo-T and Euthyrox.

Levothyroxine is a lab-made chemical that imitates the hormone that a normal thyroid produces. This helps your body have enough of the hormone to carry out its normal functions.

Levothyroxine doses are taken once daily, can be variable and often change depending on your body’s needs. Levothyroxine is usually well tolerated but may cause some stomach upset when you’re first starting to use the drug.

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Does Medicare cover Levothyroxine or Euthryox?

Yes! 100% of Medicare Advantage plans and Medicare Part D plans cover Levothyroxine.1

  • Medicare Advantage plans that offer prescription drug coverage are called Medicare Advantage Prescription Drug Plans (MA-PD). Most Medicare Advantage beneficiaries (88 percent) are enrolled in MA-PDs.2

  • Medicare prescription drugs plans each have their own formulary, or drug list, that details what prescription drugs are covered by the plan and how they are covered.

Drug coverage may vary based on plan availability. You may be able to find Medicare Advantage plan options in your area that cover Levothyroxine.

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You can also compare Part D prescription drug plans available where you live and enroll in a Medicare prescription drug plan online when you visit

Average costs for Levothyroxine with Medicare drug coverage1

Your copay and deductible costs for any prescription drug can vary depending on what coverage stage you’re in.

Deductible stage Typical copay stage
Your deductible is the amount of money you must spend on covered drugs before your Medicare drug coverage starts paying its share of costs.

In the deductible stage, you’re responsible for the full cost of your prescription drugs.

Some Medicare prescription drug plans have a $0 deductible. Medicare drug plans cannot have a deductible more than $480 in 2022.
After you meet your Part D deductible, you enter the initial coverage period.

During this phase (the typical copay stage), you pay a copayment (flat fee) or coinsurance (percentage) for your covered medications.
Free – $14 Free – $14

Additional information

Since your thyroid is very sensitive, it may take time to find the right dose of levothyroxine for your body.

Signs of an underactive thyroid can include slowed heartbeat, constipation, intolerance to cold, depression, fatigue, forgetfulness and weight gain, among other symptoms.

Signs of an overactive thyroid or too much levothyroxine include rapid heartbeat, weight loss, frequent bowel movements, difficulty sleeping, heat intolerance and nervousness. If you experience symptoms of too little or too much levothyroxine, call your doctor to let them know.

For the most benefit, you should take levothyroxine on an empty stomach 30-60 minutes before breakfast. Avoid antacids with aluminum, magnesium or calcium carbonate within 4 hours before or 4 hours after taking levothyroxine.

You should not use levothyroxine if you have any type of thyroid nodules. Some exceptions can be made, but use caution.

Levothyroxine should also be used with caution in postmenopausal women, elderly patients and patients with heart disease and osteoporosis. Caution should also be used in patients with diabetes.



This article is for informational purposes only. It is not healthcare advice, treatment, or diagnosis. It is not an endorsement of or recommendation for this medication. Speak to your doctor or healthcare provider about your specific healthcare needs, including your prescription medications. Only take medication as directed by your doctor.

Coverage and costs of prescription medications will vary by Medicare plan. Not all plans are available in all areas.


Written by Hayden Gharibyar, Pharm.D.