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Thyroid Desiccated

Brand Name: Armour Thyroid, Nature-Throid

Generic Name: Thyroid Desiccated

Drug Class: Thyroid Products

What Is Thyroid Desiccated Used For and How Does it Work?

Thyroid desiccated is used to treat hypothyroidism.

Thyroid desiccated is available under the following different brand names: Armour Thyroid and Nature-Throid.

Dosages of Thyroid Desiccated:

Dosage Forms and Strengths


  • 15mg, 16.25mg, 30mg, 32.5mg, 48.75 mg, 60mg, 65mg, 81.25, 90mg, 97.5 mg, 113.75 mg
  • 120mg, 130mg, 146.25, 162.5mg, 180mg, 195mg, 240mg, 260 mg, 300mg, 325 mg

Dosage Considerations – Should be Given as Follows:


  • Adults, mild: initial 15-30 mg orally once daily, may increase by 15 mg/day every 2-3 weeks (or 30 mg/day every 30 days)
  • Adults, myxedema: start 15 mg orally once daily, THEN after 2 weeks 30 mg orally once daily, THEN after 2 weeks 60 mg orally once daily
  • Adults, maintenance: 60-120 mg orally once daily
  • Administration: before breakfast
  • Children 12 years or older: 1.2-1.8 mg/kg orally once daily
  • Children 6-12 years: 2.4-3 mg/kg orally once daily
  • Children 1-5 years: 3-3.6 mg/kg orally once daily
  • Children 6-12 months: 3.6-4.8 mg/kg orally once daily
  • Children 6 months: 4.8-6 mg/kg orally once daily

Not recommended in geriatric patients.

Other Indications and Uses

  • As diagnostic agents in suppression tests to differentiate suspected mild hyperthyroidism or thyroid gland autonomy


Hyperthyroidism Symptoms and Treatment See Slideshow

What Are Side Effects Associated with Using Thyroid Desiccated?

Side effects of Thyroid Desiccated may include:

This document does not contain all possible side effects and others may occur. Check with your physician for additional information about side effects.

What Other Drugs Interact with Thyroid Desiccated?

If your doctor has directed you to use this medication, your doctor or pharmacist may already be aware of any possible drug interactions and may be monitoring you for them. Do not start, stop, or change the dosage of any medicine before checking with your doctor, health care provider or pharmacist first.

Severe interactions of thyroid desiccated include:

Serious interactions of thyroid desiccated include:

Moderate interactions of thyroid desiccated include:

  • carbonyl iron
  • cholestyramine
  • colesevelam
  • digoxin
  • eluxadoline
  • ferric maltol
  • ferrous fumarate
  • ferrous gluconate
  • ferrous sulfate
  • insulin degludec
  • insulin degludec/insulin aspart
  • insulin inhaled
  • iron dextran complex
  • iron sucrose
  • lanthanum carbonate
  • levonorgestrel oral/ethinylestradiol/ferrous bisglycinate
  • metformin
  • nateglinide
  • polysaccharide iron
  • rose hips

    Thyroid desiccated has mild interactions with at least 26 different drugs.

    This document does not contain all possible interactions. Therefore, before using this product, tell your doctor or pharmacist of all the products you use. Keep a list of all your medications with you, and share the list with your doctor and pharmacist. Check with your physician if you have health questions or concerns.

What Are Warnings and Precautions for Thyroid Desiccated?


This medication contains thyroid desiccated. Do not take Armour Thyroid or Nature-Throid if you are allergic to thyroid desiccated or any ingredients contained in this drug.

Keep out of reach of children. In case of overdose, get medical help or contact a Poison Control Center immediately.


Effects of Drug Abuse

Short-Term Effects

Long-Term Effects


Pregnancy and Lactation

Thyroid desiccated is generally acceptable for use during pregnancy. Controlled studies in pregnant women show no evidence of fetal risk.

A small amount of thyroid desiccated is excreted into breast milk. Use caution while breastfeeding. Consult your doctor.


Where is the thyroid gland located? See Answer
Reviewed on 1/21/2020

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