Hyperthyroidism is a condition in which the thyroid gland releases more thyroid hormones than required. These hormones affect metabolism, blood pressure, heart rate, body temperature, among other things. Too much thyroid hormone can cause a racing heart, sweating, anxiety, trouble sleeping, and weight loss. There are several treatments to help decrease thyroid hormone production, such as anti-thyroid medicines. With assistance from healthcare providers, knowledge of these medications and the need for ongoing monitoring allows patients to stay safe if they take the medicine for hyperthyroidism. What Is Hyperthyroidism? Hyperthyroidism is a condition where the overactive thyroid produces more thyroid hormone (primarily thyroxine and triiodothyronine). Graves' disease is one of the most frequent causes; it is an autoimmune disorder in which antibodies stimulate the thyroid to produce too much hormone. Other causes are thyroid illness (some types) and thyroid nodules (which make thyroid hormones). A series of blood tests and other tests may help identify the cause and the severity of hyperthyroidism.
What Are Anti-Thyroid Medicines? Antithyroid drugs are drugs that are used to decrease the production of new thyroid hormones by the thyroid gland. Methimazole and propylthiouracil (PTU) are two of the medicines that are frequently used. Treatment will be determined depending on other medical factors, the patient's age and condition, and pregnancy. These medications do not remove the thyroid. Instead, they decrease hormone production during treatment.
How Do Anti-Thyroid Medicines Work? Iodine is required to make thyroid hormone. Anti-thyroid drugs disrupt an important step in the hormone-producing process. Methimazole and PTU block an enzyme (thyroid peroxidase) that helps make thyroid hormones. PTU can also decrease the conversion of thyroxine to the active thyroid hormone triiodothyronine in some tissues. These drugs decrease the activity of the thyroid and can gradually bring the hormone level to normal.
How Long Does Treatment Take to Work? Don't expect anti-thyroid drugs to quickly correct hyperthyroidism. The body has to use up the thyroid hormones that are already present. Symptoms might start to improve as hormone levels decrease, and the period varies between individuals. Regular blood tests can be used to check that the treatment is effective.
How Is Treatment Monitored? Blood tests are important to the treatment of thyroid disorders. Thyroid-stimulating hormone, free T4, and sometimes T3 may be the tests used for follow-up of thyroid function. A schedule of testing may be determined depending upon the severity of hyperthyroidism, type of therapy utilized, effect after therapy, and individual circumstances. Laboratory data gathered from thyroid testing may help health care practitioners determine if a person's thyroid hormone levels are being adjusted during treatment of thyroid disease at Molecular Diagnostics and Therapy.
What Are the Possible Side Effects? Anti-thyroid medicines, like other medicines, can have side effects. Rash, itching, nausea, or joint discomfort may occur in some people. Sometimes, very rare but serious complications do arise. These are due to a marked decrease in some white blood cells, which may make you vulnerable to serious infections and liver complications. If anti-thyroid drugs are in use, any patient who gets fever, severe sore throat, yellowish skin or eyes, or extreme tiredness should call his/her healthcare provider ASAP. Never take off or substitute medication without instruction or permission from a medical professional.
Anti-Thyroid Medicines During Pregnancy Hyperthyroidism should be treated with special consideration during pregnancy. PTU is generally preferred during the first trimester of pregnancy, as methimazole carries a small risk of certain birth defects; healthcare providers may switch to methimazole after the first trimester due to PTU's association with rare liver toxicity. This decision should always be made with a doctor. Pregnant women, women trying to get pregnant, or women who think they could be pregnant should tell their health professional before beginning to take or change their thyroid medication. However, routine thyroid monitoring done throughout pregnancy can also be used to ensure thyroid hormone levels are maintained.
Are Anti-Thyroid Medicines a Permanent Treatment? Not necessarily. Treatment is given for a period determined by the cause of hyperthyroidism and the person's response. Gradually, some patients with Graves' disease achieve remission, and some get hyperthyroidism again after they have finished treatment. In some cases, hyperthyroidism can return, or treatments may not be appropriate, and radioactive iodine therapy or surgery may be the recommended treatment.
Why Regular Thyroid Testing Is Important The only way to determine if thyroid hormone levels are in the proper range is by serum assessment. Blood testing can give objective information on thyroid function. Testing may be performed frequently to help healthcare providers know if a dose might need to be adjusted and if treatment is working. Dr. Nikunj Jain and his team at Molecular Diagnostics and Therapy can aid patients' health management journey with proper diagnostic evaluation and tracking of thyroid function
Conclusion Drugs used for antithyroid treatment act by decreasing the amount of thyroid hormone produced and are an invaluable treatment for treating hyperthyroidism in many people. Methimazole and propylthiouracil are medicines that can be used, depending on what is causing the condition and the individual. However, there may be variations in how the thyroid responds to treatment and in the medications that are needed, so it is important to have thyroid blood testing regularly. People should use medicines as directed and report any side effects or worries about them right away to their health care professional. With Dr. Nikunj Jain, Molecular Diagnostics and Therapy offers thyroid diagnostic testing for the evaluation and monitoring of thyroid health.