Thyroid general information

Thyroid hormones are produced naturally in the body by the thyroid gland. They are important for maintaining normal energy and metabolism.

For a variety of reasons, the body may not produce enough thyroid hormone on its own. In these cases, medication is taken to replace the body's natural thyroid hormones. Thyroid hormones are also used to prevent and treat goiter (growth or enlargement of the thyroid gland) and along with surgery and radiation therapy in the treatment of certain thyroid cancers.

Thyroid may also be used for purposes other than those listed in this medication guide.

Thyroid dosage and administration

Take this medication exactly as directed by your doctor. If you do not understand these directions, ask your doctor, nurse, or pharmacist to explain them to you. Take each dose with a full glass (8 ounces) of water. It is best to take thyroid on an empty stomach, one-half hour to one hour before a meal.

Take this medication at the same time each day whenever possible. Take thyroid every day as directed, even if you feel well.

It is important to take thyroid regularly to get the most benefit. Do not stop taking thyroid without first talking to your doctor. You may need to take this medication for the rest of your life to replace insufficient amounts of thyroid produced by the body.

Your doctor may want you to have blood tests or other medical evaluations during treatment with thyroid to monitor progress and side effects.

Thyroid side effects

If you experience any of the following uncommon but serious side effects, stop taking thyroid and seek emergency medical attention or contact your doctor immediately:

• an allergic reaction (difficulty breathing; closing of the throat;
• swelling of the lips, tongue, or face; or hives);
  
• vomiting; or chest pain, irregular heartbeat, or shortness of breath.

Other, less serious side effects may be more likely to occur. Continue to take thyroid and talk to your doctor if you experience

• tremor, nervousness, or irritability;
  
• headache;insomnia;
• diarrhea, changes in appetite, or weight loss;
• leg cramps;
• menstrual irregularities;
• or fever, sweating, or heat sensitivity.

Side effects other than those listed here may also occur. Talk to your doctor about any side effect that seems unusual or that is especially bothersome.