Prescription medication · Thyroid Hormone (Natural)

thyroid (desiccated)

Also sold as Armour Thyroid, Nature-Throid. This medicine treats hypothyroidism, a condition where your thyroid gland doesn't make enough thyroid hormone.

Data updated 2026-05-15

39% less
Generic vs brandReal savings
$1.88
Brand price (NADAC)

thyroid (desiccated) (Armour Thyroid) is a prescription Thyroid Hormone (Natural). This medicine treats hypothyroidism, a condition where your thyroid gland doesn't make enough thyroid hormone.

Armour Thyroid is a natural thyroid hormone medicine. It helps your body when it doesn't make enough thyroid hormone on its own.

Drug Pricing (NADAC)

Brand Price

$1.88/unit

Generic Price

$1.15/unit

Generic Savings

39%

Generic Available

Yes (0 manufacturers)

Pricing data from NADAC (CMS), effective December 18, 2024. Compare all drug costs →

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What it does

This medicine treats hypothyroidism, a condition where your thyroid gland doesn't make enough thyroid hormone.

Common side effects

No common side effects listed.

Key warnings

Thyroid hormones should not be used for weight loss.

The sections below are summarized in plain English from thyroid (desiccated)'s FDA-approved prescribing information. They describe what the official label says, and are not personal medical advice.

How It Works

Armour Thyroid provides thyroid hormones that your body needs to function properly. It contains both T4 (levothyroxine) and T3 (liothyronine). These hormones help regulate your metabolism, energy levels, and overall growth and development.

Serious Warnings

Thyroid hormones should not be used for weight loss. Using high doses of thyroid hormone, especially with other stimulants, can cause serious and life-threatening problems.

Common Questions

What should I tell my doctor before taking Armour Thyroid?
Tell your doctor if you have any heart problems, adrenal gland problems, or are allergic to any of the ingredients in Armour Thyroid.
Can Armour Thyroid be used for weight loss?
No, Armour Thyroid should not be used for weight loss. It can be dangerous.
How long does it take for Armour Thyroid to work?
It may take a few weeks to feel the full effects of Armour Thyroid. Your doctor will monitor your thyroid hormone levels to make sure you are on the right dose.
What if I experience chest pain while taking this medicine?
Tell your doctor right away if you have chest pain. This could be a sign that your dose is too high.
Are there any foods or drinks I should avoid while taking Armour Thyroid?
Talk to your doctor or pharmacist about any potential food or drug interactions.
Can I stop taking Armour Thyroid on my own?
No, do not stop taking Armour Thyroid without talking to your doctor first. Stopping suddenly can cause your thyroid hormone levels to drop.
Does Armour Thyroid have a strong smell?
Yes, Armour Thyroid may have a strong, characteristic odor.
What are the inactive ingredients in Armour Thyroid?
The inactive ingredients are calcium stearate, dextrose, microcrystalline cellulose, sodium starch glycolate and opadry white.
What should I do if I think I have taken too much Armour Thyroid?
Call your doctor or go to the nearest emergency room right away.
Can biotin supplements affect my thyroid test results?
Yes, biotin can interfere with thyroid tests. Stop taking biotin at least 2 days before your blood test.
What drug class is thyroid (desiccated)?
thyroid (desiccated) belongs to the Thyroid Hormone (Natural) drug class. It requires a prescription (Rx). This medicine treats hypothyroidism, a condition where your thyroid gland doesn't make enough thyroid hormone.
Is there a generic version of thyroid (desiccated)?
Yes, generic thyroid (desiccated) is available. The generic costs $1.15 per unit compared to $1.88 for the brand version, saving approximately 39%. Pricing is based on NADAC (National Average Drug Acquisition Cost) data from CMS.
What pregnancy or breastfeeding source fields are listed for thyroid (desiccated)?
The FDA label for thyroid (desiccated) contains product-specific pregnancy or breastfeeding language. PlainMeds does not apply that source text to an individual.

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What the FDA Data Shows for thyroid (desiccated)

The FDA label for thyroid (desiccated) (sold under brand names such as Armour Thyroid, Nature-Throid) classifies it as a prescription-only medication in the Thyroid Hormone (Natural) class. This medicine treats hypothyroidism, a condition where your thyroid gland doesn't make enough thyroid hormone. Labeling covers dosing, contraindications, and monitoring requirements derived from clinical trials.

Post-market surveillance from the FDA Adverse Event Reporting System (FAERS) captures real-world experience. Voluntary reports accumulate over the lifetime of a drug and reflect wide-ranging clinical use. Interaction data is drawn directly from FDA-approved prescribing information. NADAC pricing from CMS shows a generic unit cost of $1.15 versus $1.88 for the brand - a 39% generic savings.

Report counts do not establish causation, a FAERS entry documents a temporal association, not proof that the drug produced the outcome. Widely prescribed medications naturally accumulate more reports than niche therapies, so raw totals must be interpreted alongside total exposure. Shortage status, recall history, and patent information are separate source-record fields. This page is a public FDA/CMS registry and does not provide medical, treatment, substitution, or medication-change directions.

Data Sources

Drug labeling: FDA Drug Labels (SPL/DailyMed). Adverse events: FDA Adverse Event Reporting System (FAERS). Pricing: CMS National Average Drug Acquisition Cost (NADAC).

FAERS reports are voluntary and do not establish causation. Drug interactions are derived from FDA labeling and clinical references. This registry does not provide medication decisions.

Last updated: January 9, 2025

PlainMeds is rendered directly from FDA openFDA/FAERS extracts, DailyMed labels, and CMS drug-pricing files, no number is typed in by an editor. FAERS counts, recalls, shortages, and price figures on this page are queried live from those federal extracts. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2026-05-15. Primary sources: openFDA / FAERS, DailyMed and CMS Part B ASP.

Data currency: FDA FAERS adverse-event reports through 2025, CMS NADAC acquisition-cost pricing effective December 2024, compiled from the source snapshot dated . See our methodology for per-source dates and refresh cadence. Spot a figure that looks wrong? Report a data issue.

All federal data sources used on this page