Compare Armour thyroid vs. Cytomel

Head-to-head comparisons of medication uses, side effects, ratings, and more.

Armour Thyroid
(Thyroid Hormone)

Cytomel
(Liothyronine)

Replaces thyroid hormones. Armour Thyroid (Thyroid Hormone) can be used to treat low thyroid hormone, but it's not recommended by most doctors and isn't available in generic.Replaces thyroid hormones. 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.
Find lowest prices
Powered by GoodRxSave on your next prescription. Be sure you’re getting the lowest price for your medication, even if you have insurance.
No pricing data for this drug at this filter setting. Try searching onGoodRx
Reviews & ratings
Button Group. All currently active
Button Group. All currently active

Not enough reviews for this drug. Help someone out, leave a review!

Not enough reviews for this drug. Help someone out, leave a review!

Side effects
Armour thyroidCytomel

We haven’t found good data for Armour thyroid side effects.

FDA side effect reports for Armour thyroid »

We haven’t found good data for Cytomel side effects.

FDA side effect reports for Cytomel »
How it works
Armour thyroidCytomel
Armour Thyroid (Thyroid Hormone) is a hormone replacement medicine for people with hypothyroidism. Thyroid hormone regulates metabolism, which is everything your body does to turn food into energy. It affects almost every cell in your body.Cytomel (Liothyronine) is a synthetic form of thyroid hormone. The thyroid gland makes hormones that are important for body metabolism, growth, and development.
Type of medication
Armour thyroidCytomel
Thyroid supplementPrescription only
Thyroid supplementPrescription only
Available as
Armour thyroidCytomel
  • Pill
  • Pill
Used for (click to learn more)
Armour thyroidCytomel
Risk factors for serious side effects
Armour thyroidCytomel
  • Taking Armour Thyroid (Thyroid Hormone) for weight loss
  • Diabetes
  • Taking blood thinners
Detailed Armour Thyroid (Thyroid Hormone) risks & warnings »
      • Current heart disease
      • Age 60 or older
      • Taking Cytomel (Liothyronine) with certain types of stimulant medicines
      • Diabetes
        Detailed Cytomel (Liothyronine) risks & warnings »
        Pregnancy category
        Armour thyroidCytomel
        AFDA pregnancy category (Safe)

        Research studies with real people haven’t found any risk to unborn babies in the first trimester. There’s no evidence of risk later in pregnancy, either.

        See the FDA package insert
        AFDA pregnancy category (Safe)

        Research studies with real people haven’t found any risk to unborn babies in the first trimester. There’s no evidence of risk later in pregnancy, either.

        See the FDA package insert
        Alcohol
        No specific alcohol-related info.No specific alcohol-related info.
        Food
        No specific food-related info.
        • Cytomel (Liothyronine) has many food and drug interactions. Talk to your doctor or pharmacist before you make any changes or start a new medicine.
        Kidneys and liver
        No specific kidneys and liver-related info.No specific kidneys and liver-related info.
        Sex
        No specific sex-related info.No specific sex-related info.
        Sleep
        No specific sleep-related info.No specific sleep-related info.
        Weight
        • It is not recommended to take Armour Thyroid (Thyroid Hormone) for weight loss if your thyroid is working normally. You can get an overdose of thyroid hormone, which can be toxic or even deadly, especially if you are on other medications for losing weight. Talk to your doctor for suggestions to lose weight safely. Symptoms of increased thyroid hormone include irregular heartbeat, tremors, insomnia, vomiting or restlessness.
        • 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.
        Upsides and benefits
        Armour thyroidCytomel
        • Made from animal sources (pigs), so it's considered natural.
        • Cytomel (Liothyronine) supplies an important hormone that your body needs to grow and develop.
        • Safe during pregnancy.
        • Available in generic.
        Downsides and risks
        Armour thyroidCytomel
        • Not recommended by doctors because of the inconsistency of thyroid hormone in each tablets, and the fact that it hasn't been studied as much as similar medications.
        • Not 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.
        Tips from our pharmacists for people taking the medication
        Armour thyroidCytomel
        • Take on an empty stomach.
        • Take at the same time every day.
        • Space out colestipol or cholestyramine by at least 4 hours.
        • 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.
        Learn more
        More about Armour thyroidSide effectsReviews & ratingsAlternativesFDA package insert
        More about CytomelSide effectsReviews & ratingsAlternativesFDA package insert