Thyrolar Side Effects

Generic name: liotrix

Medically reviewed by Drugs.com. Last updated on Apr 7, 2025.

Note: This document provides detailed information about Thyrolar Side Effects associated with liotrix. Some dosage forms listed on this page may not apply specifically to the brand name Thyrolar.

Applies to liotrix: oral tablet.

Precautions

It is very important that your doctor check your progress at regular visits. This will allow your doctor to see if the medicine is working properly and to decide if you should continue to take it. Blood and urine tests will be needed to check for unwanted effects .

Liotrix should not be used for the treatment of obesity or for the purpose of losing weight. This medicine is ineffective for weight reduction and when taken in larger amount, it may cause more serious medical conditions .

Hypothyroidism can sometimes cause infertility in men and women. Liotrix should not be used for the treatment of infertility unless it is caused by hypothyroidism .

Call your doctor right away if you start to have chest pain, fast or irregular heartbeat, excessive sweating, heat intolerance, nervousness, or any other unusual medical condition .

For patients with diabetes, it is very important that you keep track of your blood or urine sugar levels as instructed by your doctor. Check with your doctor immediately if you notice any changes in your sugar levels .

A temporary loss of hair may occur during the first few months of liotrix (the active ingredient contained in Thyrolar) therapy. Ask your doctor about this if you have any concerns .

Serious side effects of Thyrolar

Along with its needed effects, liotrix may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor immediately if any of the following side effects occur while taking liotrix:

Other side effects of Thyrolar

Some side effects of liotrix may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects.

Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

See also:

For healthcare professionals

Applies to liotrix: oral tablet.

General adverse events

Adverse reactions other than those attributable to hyperthyroidism due to therapeutic overdose are rare. Excessive doses may result in a hypermetabolic state resembling in every respect the condition of endogenous origin.^[Ref]

Endocrine

• Postmarketing reports: Hypothyroidism, thyroid stimulating hormone (TSH) increased, TSH decreased^[Ref]

Cardiovascular

• Postmarketing reports: Palpitation, blood pressure increased, heart rate increased^[Ref]

Dermatologic

• Postmarketing reports: Alopecia, dry skin, urticaria, hyperhidrosis, pruritus^[Ref]

Immunologic

• Postmarketing reports: Hypersensitivity^[Ref]

Musculoskeletal

• Postmarketing reports: Arthralgia, myalgia^[Ref]

Ocular

• Postmarketing reports: Keratoconjunctivitis sicca^[Ref]

Other

• Postmarketing reports: Fatigue, sluggishness, weight increased, asthenia, chest pain^[Ref]

Nervous system

• Postmarketing reports: Headache, tremor^[Ref]

Gastrointestinal

• Postmarketing reports: Nausea^[Ref]

Psychiatric

• Postmarketing reports: Anxiety, depression, insomnia^[Ref]

Further information

Thyrolar side effects can vary depending on the individual. Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Note: Medication side effects may be underreported. If you are experiencing side effects that are not listed, submit a report to the FDA by following this guide.

Medical Disclaimer