Medications are commonly prescribed to manage thyroid disorders and imbalances, but it’s essential to understand the potential risks associated with these medications. In this article, we will delve into the profiles of these medications, highlighting the specific side effects that have raised concerns among patients and medical professionals alike. 

Join us as we take a closer look at the darker side of thyroid medications and delve into the complexities of balancing the benefits and risks they pose.

1. Tepezza

Tepezza is a medication commonly used to treat thyroid eye disease, affecting the muscles and tissues around the eyes. While the medicine has shown effectiveness in managing this condition, it has also been associated with certain severe side effects that have raised concerns. 

One notable concern is the potential link between Tepezza and hearing problems. Some individuals undergoing this treatment have reported experiencing hearing loss or other auditory complications.

It’s crucial to note that these reported cases of hearing problems are relatively rare, but they have prompted some individuals to take legal action. The Tepezza hearing loss lawsuit is a legal process initiated by individuals who believe they have suffered hearing-related issues due to Tepezza treatment. 

These lawsuits aim to seek compensation for the alleged damages and bring attention to the potential risks associated with the medication.

TorHoerman Law states that if you or a loved one have experienced hearing loss or other hearing-related issues after using Tepezza, it’s crucial to consult a qualified attorney specializing in pharmaceutical litigation. They can provide legal guidance and help determine if you have a valid claim in the Tepezza hearing loss lawsuit.

It’s essential to stay informed about the latest developments regarding Tepezza and its potential side effects. Discuss any concerns or questions with your healthcare provider if you are considering or currently undergoing this medicine’s treatment. They can provide personalized advice based on your medical history and help you weigh the benefits and risks of this medication.

2. Levothyroxine

Levothyroxine is a commonly prescribed medication used to treat hypothyroidism. It is considered the standard treatment for managing thyroid hormone deficiencies. Levothyroxine supplements the body with synthetic thyroid hormones, helping restore normal thyroid function.

While Levothyroxine is generally well-tolerated, it is crucial to be aware of potential side effects, especially when the medication is not properly dosed or monitored. Some individuals may experience heart palpitations, chest pain, tremors, or excessive sweating. In rare cases, severe allergic reactions or adverse cardiac events may occur.

According to the National Institute of Hospitals, hypothyroidism is linked to various cardiovascular conditions such as coronary artery disease (CAD), atherosclerosis, heart failure, diastolic hypertension, and reduced insulin sensitivity. 

It is noteworthy that Levothyroxine, when not properly managed, can further exacerbate cardiovascular diseases by causing a mismatch between the supply and demand of the heart.

Close monitoring and appropriate dosing of Levothyroxine help mitigate the potential risks to cardiovascular health. Healthcare professionals play a vital role in assessing the individual’s condition, conducting regular evaluations, and making necessary adjustments to ensure the optimal management of thyroid hormone levels.

3. Methimazole

Methimazole is a commonly prescribed medication for treating hyperthyroidism, a condition characterized by an overactive thyroid gland. While methimazole can effectively help regulate thyroid hormone levels, it is essential to be aware of its potential side effects.

Clinical studies claim that some individuals taking methimazole may experience adverse reactions such as skin rash, itching, gastrointestinal disturbances, and a decreased white blood cell count. In rare cases, severe side effects like liver injury or agranulocytosis (a significant reduction in white blood cells) may occur.

According to, you should discontinue using methimazole and contact your doctor immediately if you experience symptoms of infection such as cold and flu-like symptoms, sore throat, chills, fever, sudden weakness, or feeling unwell.

 Other serious side effects to watch out for include painful mouth sores, difficulty swallowing, red or swollen gums, as well as unusual bleeding, easy bruising, and pale skin.

Additionally, methimazole may cause certain severe side effects that require medical attention. These include swollen glands in the neck or jaw, as well as liver problems characterized by symptoms such as clay-colored stools, dark urine, loss of appetite, fatigue, itching, upper stomach pain, nausea, or jaundice.

It is crucial for patients prescribed methimazole to have regular monitoring of their liver function and blood cell counts to detect and manage any potential side effects promptly. Healthcare professionals closely monitor the dosage and adjust it as necessary to minimize the risk of complications.

4. Liothyronine

Liothyronine, or T3 medication, is a thyroid hormone medication prescribed for various thyroid disorders, including hypothyroidism. While it can effectively alleviate symptoms associated with an underactive thyroid, you must be aware of the potential side effects that may arise from its use.

One common side effect of liothyronine is an increased heart rate or palpitations. Some individuals may experience a rapid or irregular heartbeat, which can be concerning. If you notice any changes in your heart rate or experience palpitations while taking liothyronine, you must consult your healthcare provider for further evaluation.

Another possible side effect of liothyronine is muscle weakness or tremors. Some individuals may experience shaking or trembling of the hands or other parts of the body. If you encounter these symptoms, discussing them with your healthcare provider to determine the appropriate course of action is essential.

According to Mayo Clinic, Liothyronine can have severe side effects, including the development of a life-threatening condition called myxedema coma. It is crucial to be aware of the symptoms associated with this condition and seek immediate medical attention if they occur. 

These symptoms may include low body temperature, coldness, non-responsiveness or confusion, weakness, difficulty breathing, or body swelling (especially in the lower legs, tongue, and face).

For individuals with diabetes, it is vital to closely monitor blood or urine sugar levels as directed by your healthcare provider. Any changes in sugar levels should be promptly reported to your doctor. 

5. Desiccated thyroid

Desiccated thyroid, also known as thyroid extract, is a medication derived from the thyroid glands of animals. While it has been used for many years to treat hypothyroidism, it is crucial to be aware of its potential side effects.

One of the main concerns with desiccated thyroid is the inconsistency of hormone levels from batch to batch. It can make achieving a stable and optimal thyroid hormone balance difficult. Additionally, because desiccated thyroid is derived from animal sources, there is a risk of allergenic reactions in some individuals.

Another potential side effect of desiccated thyroid is an excessive intake of thyroid hormones, leading to hyperthyroidism. It can result in symptoms such as increased heart rate, tremors, weight loss, and irritability.

According to Medicine Net, desiccated thyroid can have common side effects that should be monitored closely. These side effects include shortness of breath (dyspnea), high heart rate (tachycardia), irregular heart rhythm (cardiac arrhythmia), palpitations, chest pain, abdominal cramps, tremors, and nervousness.

It is crucial to stay vigilant and promptly communicate any symptoms to your healthcare provider. They can assess your condition, make necessary adjustments to your treatment plan, and ensure your overall well-being.


While the above-listed medications can effectively manage thyroid conditions, they also come with risks that should not be overlooked. Close monitoring, regular communication with healthcare providers, and adherence to prescribed dosages are essential for minimizing the likelihood of experiencing adverse effects.

If you are taking any of these medications, staying informed, remaining vigilant about your health, and promptly reporting any concerning symptoms to your healthcare provider is crucial. By prioritizing your well-being and maintaining a collaborative relationship with your medical team, you can navigate the potential risks associated with thyroid medications and make informed decisions about your treatment.