Armour thyroid and Unithroid drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Armour thyroid (thyroid tablets, usp) and Unithroid (levothyroxine sodium). Common drug interactions include age-related macular degeneration among females and diarrhoea among males.

The phase IV clinical study analyzes what interactions people have when they take Armour thyroid and Unithroid. It is created by eHealthMe based on reports of 14 people who take the same drugs from the FDA, and is updated regularly.

What is Armour thyroid?

Armour thyroid has active ingredients of thyroid tablets, usp. It is often used in hypothyroidism. eHealthMe is studying from 11,975 Armour thyroid users. Check the latest studies of Armour thyroid.

What is Unithroid?

Unithroid has active ingredients of levothyroxine sodium. It is often used in hypothyroidism. eHealthMe is studying from 890 Unithroid users. Check the latest studies of Unithroid.

eHealthMe: drug outcomes in the real world

eHealthMe runs one of the largest post-marketing drug safety studies in the world. We study millions of patients and 5,000 more each day. Our data-driven phase IV clinical trials have been referenced on 800+ peer-reviewed medical publications including The Lancet, Mayo Clinic Proceedings, and Nature. Tools to study our phase IV findings are available to the public, anonymous and free >>>.

On Sep, 03, 2026

14 people who take Armour thyroid and Unithroid together, and have interactions are studied.

Armour thyroid and Unithroid drug interactions.

What are the common drug interactions of Armour Thyroid and Unithroid, by gender? *:

female:

Age-related macular degeneration
Arthralgia (joint pain)
Chest pain
Drug intolerance (drug sensitivity)
Dyspnoea exertional (breathlessness or shortness of breath)
Malaise (a feeling of general discomfort or uneasiness)
Muscle tightness
Myalgia (muscle pain)
Nausea (feeling of having an urge to vomit)
Abdominal discomfort

male:

Diarrhoea
Fatigue (feeling of tiredness)
Hyperhidrosis (abnormally increased sweating)

What are the common drug interactions of Armour Thyroid and Unithroid, by age (0-1 to 60+)? *:

0-1:

n/a

2-9:

n/a

10-19:

n/a

20-29:

n/a

30-39:

n/a

40-49:

Abdominal discomfort
Abdominal pain upper
Arthralgia (joint pain)
Back pain
Bone pain
Chest pain
Constipation
Decreased appetite
Diarrhoea
Fatigue (feeling of tiredness)

50-59:

Alopecia (absence of hair from areas of the body)
Arthralgia (joint pain)
Arthritis (form of joint disorder that involves inflammation of one or more joints)
Blood thyroid stimulating hormone increased
Bronchitis (inflammation of the mucous membrane in the bronchial tubes)
Burning sensation
Chest discomfort
Dizziness
Drug hypersensitivity
Drug intolerance (drug sensitivity)

60+:

Detachment of retinal pigment epithelium
Maculopathy (a condition or disease of the macula, the small spot in the retina where vision is keenest)
Vitreous degeneration (serious vision problems in humans)
Age-related macular degeneration
Drug hypersensitivity
Drug intolerance (drug sensitivity)
Dyspnoea exertional (breathlessness or shortness of breath)
Muscle tightness
Neuromyopathy (disease of both muscles and nerves)

What are the existing conditions these people have? *

Stress And Anxiety: 3 people, 21.43%
Osteoporosis (bones weak and more likely to break): 3 people, 21.43%
Cystitis Interstitial (unknown cause characterized by bladder pain): 3 people, 21.43%
Abdominal Discomfort: 3 people, 21.43%
Narcolepsy (brain's inability to regulate sleep-wake cycles normally): 2 people, 14.29%
Chronic Thyroiditis (long lasting inflammation of thyroid gland): 2 people, 14.29%
Weight Loss: 1 person, 7.14%
Pain: 1 person, 7.14%
High Blood Pressure: 1 person, 7.14%
High Blood Cholesterol: 1 person, 7.14%

* Approximation only. Some reports may have incomplete information.

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