Prescription onlyLower-cost generic available

Cytomel

(Liothyronine)

  • Pill
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Replaces thyroid hormones.

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Prescription onlyLower-cost generic available

Our pharmacists’ bottom line

Cytomel (Liothyronine) is good for treating low thyroid, but you may need frequent blood tests and you should take it exactly as told by your doctor and pharmacist.

  • Cytomel (Liothyronine) supplies an important hormone that your body needs to grow and develop.
  • Safe during pregnancy.
  • Available in generic.
  • You may need frequent dose adjustments when you first start taking Cytomel (Liothyronine) or if your health changes.
  • Periodic blood tests are needed to make sure you're getting the right dose.
  • Cytomel (Liothyronine) supplies one type of thyroid hormone, which may not be right for everyone.
  • Cytomel (Liothyronine) has many food and drug interactions. Talk to your doctor or pharmacist before you make any changes or start a new medicine.

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Side effects for Cytomel (Liothyronine)

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These are side effects of Cytomel (Liothyronine) reported to the FDA by people taking it, and by doctors and pharmacists.

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What to expect when you take Cytomel (Liothyronine)

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Tips from our pharmacists
  • Full effects may take a few weeks. Continue taking Cytomel (Liothyronine) even if you don't feel better right away. Talk to your doctor before making any changes.
  • You'll need blood tests to see if you're on the right dose of Cytomel (Liothyronine). Your doctor may adjust your dose every 1 to 2 weeks.
  • Taking calcium with Cytomel (Liothyronine) may lower your thyroid hormones. If you take calcium, separate taking it and Cytomel (Liothyronine) by at least 4 hours.
  • Try to take Cytomel (Liothyronine) at the same time each day.

Risks and Warnings for Cytomel (Liothyronine)

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  • Don't take Cytomel (Liothyronine) for weight loss or obesity. It’s not recommended, safe or effective for this use, especially if you don't have problems with your thyroid. Taking high doses of Cytomel (Liothyronine) can cause serious effects, especially if used with other medications for weight loss. Talk to your doctor about other medicines you can take to treat your condition.

    This is a black box warning. The FDA requires this warning when there is a significant risk of serious or life-threatening effects that anyone taking the drug should consider.

Means that some groups have a high risk of experiencing this side effect

Tips from pharmacists and people taking Cytomel (Liothyronine)

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The FDA category for this medication is A. It is advised that you: Safe
Pregnancy
Food
  • Upsides and downsides from our pharmacists
  • Cytomel (Liothyronine) has many food and drug interactions. Talk to your doctor or pharmacist before you make any changes or start a new medicine.
Weight gain or loss
  • Risks from our pharmacists
  • Don't take Cytomel (Liothyronine) for weight loss or obesity. It’s not recommended, safe or effective for this use, especially if you don't have problems with your thyroid. Taking high doses of Cytomel (Liothyronine) can cause serious effects, especially if used with other medications for weight loss. Talk to your doctor about other medicines you can take to treat your condition.