We are independent & ad-supported. We may earn a commission for purchases made through our links.

Advertiser Disclosure

Our website is an independent, advertising-supported platform. We provide our content free of charge to our readers, and to keep it that way, we rely on revenue generated through advertisements and affiliate partnerships. This means that when you click on certain links on our site and make a purchase, we may earn a commission. Learn more.

How We Make Money

We sustain our operations through affiliate commissions and advertising. If you click on an affiliate link and make a purchase, we may receive a commission from the merchant at no additional cost to you. We also display advertisements on our website, which help generate revenue to support our work and keep our content free for readers. Our editorial team operates independently from our advertising and affiliate partnerships to ensure that our content remains unbiased and focused on providing you with the best information and recommendations based on thorough research and honest evaluations. To remain transparent, we’ve provided a list of our current affiliate partners here.

What are Cytomel® Side Effects?

By Henry Gaudet
Updated Feb 01, 2024
Our promise to you
WiseGEEK is dedicated to creating trustworthy, high-quality content that always prioritizes transparency, integrity, and inclusivity above all else. Our ensure that our content creation and review process includes rigorous fact-checking, evidence-based, and continual updates to ensure accuracy and reliability.

Our Promise to you

Founded in 2002, our company has been a trusted resource for readers seeking informative and engaging content. Our dedication to quality remains unwavering—and will never change. We follow a strict editorial policy, ensuring that our content is authored by highly qualified professionals and edited by subject matter experts. This guarantees that everything we publish is objective, accurate, and trustworthy.

Over the years, we've refined our approach to cover a wide range of topics, providing readers with reliable and practical advice to enhance their knowledge and skills. That's why millions of readers turn to us each year. Join us in celebrating the joy of learning, guided by standards you can trust.

Editorial Standards

At WiseGEEK, we are committed to creating content that you can trust. Our editorial process is designed to ensure that every piece of content we publish is accurate, reliable, and informative.

Our team of experienced writers and editors follows a strict set of guidelines to ensure the highest quality content. We conduct thorough research, fact-check all information, and rely on credible sources to back up our claims. Our content is reviewed by subject matter experts to ensure accuracy and clarity.

We believe in transparency and maintain editorial independence from our advertisers. Our team does not receive direct compensation from advertisers, allowing us to create unbiased content that prioritizes your interests.

Hypothyroidism, where insufficient levels of thyroid hormone are present, can be treated with Cytomel®. As a result, many Cytomel® side effects are related to symptoms of hyperthyroidism, a condition usually resulting from an overactive thyroid gland. Many people experience no Cytomel® side effects at all, and for most of those who do, they are easily managed. Some side effects are, however, potentially life threatening, and the drug should be taken only under medical supervision.

Cytomel® is a brand name for a synthetic version of the thyroid hormone liothyronine. The drug most often is prescribed to treat hypothyroidism and related thyroid conditions such as goiter. As a diagnostic tool, Cytomel® also can be used to test for hyperthyroidism. Some bodybuilders have used the drug without medical supervision to burn fat more quickly.

Some of the more commonly experienced Cytomel® side effects include gastrointestinal distress such as nausea, diarrhea, vomiting and stomach cramps. The patient might notice an increase in appetite accompanied by weight loss. Sensitivity to heat might increase, and the patient might become flushed, sweat profusely or develop a fever. Other Cytomel® side effects include nervousness, irritability, anxiety, insomnia, tremors, headache and changes in the patient’s menstrual cycle. Any observed side effects should be reported to the doctor, who can adjust the level of medication as needed.

More dangerous Cytomel® side effects include high blood pressure, rapid or irregular heartbeat and heart palpitations. Chest pain might occur, and the drug can increase the risk of heart attack or heart failure. The patient might have difficulty breathing, suffer extreme weakness or experience a seizure. Extremities might become swollen, and unexplained bruises might appear. If any of these conditions are observed, immediate emergency medical attention is needed.

Any medication comes with a potential risk of allergic reaction. A patient who develops a rash, hives or itching might be allergic to the drug. Allergens might cause swelling, which can be especially dangerous around the mouth and throat, and the patient might begin wheezing or have difficulty breathing. Anyone experiencing these symptoms should stop taking the medication and seek medical help immediately.

Blood sugar levels are affected by Cytomel®, and doctors should be made aware of medical conditions such as diabetes before the drug is prescribed. Heart conditions also might worsen with use of this drug. Cytomel® reacts with many other medications, including seizure medications, diabetes medications, diet pills, bile acid sequestrants, birth control pills and drugs used in hormone replacement therapy. Patients should make sure that their doctor is aware of all medications being taken.

For people without a thyroid deficiency, Cytomel® is potentially life threatening. The levels of Cytomel® required to cause weight loss are sufficient to cause hyperthyroidism and other serious Cytomel® side effects as well. Under no circumstances should Cytomel® be taken without first consulting a medical professional.

WiseGEEK is dedicated to providing accurate and trustworthy information. We carefully select reputable sources and employ a rigorous fact-checking process to maintain the highest standards. To learn more about our commitment to accuracy, read our editorial process.

Discussion Comments

WiseGEEK, in your inbox

Our latest articles, guides, and more, delivered daily.

WiseGEEK, in your inbox

Our latest articles, guides, and more, delivered daily.