Some patients fail to feel significantly better even when their thyroid levels become normal after taking thyroid replacement. Some patients with persistent symptoms may benefit from triiodothyronine (T3 the other important thyroid hormone.
Brand Names. A number of levothyroxine brands are available. Synthroid is the oldest brand and has been used for over 40 years. In the past, manufacturers of levothyroxine did not need to meet as strict standards as in the production of other drugs.
Appropriate Dosage Levels. Initial dosage levels are determined on an individual basis and can vary widely, depending on a person's age, medication condition, other drugs they are taking, and, in women, whether or not they are pregnant.
Some of these medicines include: Taking medicine Medicine is one of the many tools your doctor has to treat a health problem. Taking medicine as your doctor suggests will improve your health and may prevent future problems.
Symptoms of Under- and Over-Dosing of Levothyroxine. Under-Dosing Over-Dosing Sluggishness Heart symptoms (rapid heart beat, palpitations, and wide variations in pulse; possible angina or heart failure) Mental dullness Agitation (tremor, nervousness, insomnia, excessive sweating) Feeling cold Pain (headache and muscle pain) Muscle cramps.
If you don't take your medicines properly, you may be putting your health (and perhaps your life) at risk. There are many reasons why people have trouble taking their medicine. But in most cases, there is something you can do.
He or she may be able to lower your dose or change your medicine. Do not suddenly quit taking your medicine unless your doctor tells you to. Call 911 or other emergency services right away if you have: Call your doctor if you have: See Drug Reference for a full list of side effects.
Gradual weight loss (in people with severe hypothyroidism at the time of diagnosis). Improved mood and mental function (thinking, memory). Improved pumping action of the heart and improved digestive tract function.
Maintenance dose. Maintenance dose for most patients averages 112 micrograms, but it can vary between micrograms. If conditions such as pregnancy, surgery, or other drugs alter hormone levels, the patient's thyroid needs will have to be reassessed.
Why It Is Used Thyroid hormone medicines are given when blood tests show that you have hypothyroidism. Thyroid hormone medicines also may be prescribed: How Well It Works. People with hypothyroidism who take thyroid hormone medicine usually notice: Improved energy level.
There is still debate over whether generic thyroid preparations are as effective as brand products. Any change, such as being switched between brand-name and generic or between two different generics, requires additional testing of thyroid hormone levels.
Reduction in the size of an enlarged thyroid gland ( goiter if you have one. Improved growth, school performance, and behavior in children. Children whose growth has been delayed because of hypothyroidism start growing normally again when they are getting adequate doses of thyroid hormone.
But a good outcome depends on how soon treatment starts. Side Effects All medicines have side effects. But many people don't feel the side effects, or they are able to deal with them.
Overdosing can cause symptoms of hyperthyroidism. A patient with too much thyroid hormone in the blood is at an increased risk for abnormal heart rhythms, rapid heartbeat, heart failure, and possibly a heart attack if the patient has underlying heart disease.
This may help prevent missed doses. If you miss a dose of your medicine, use it as soon as you can. If it is almost time for your next dose, take your medicine then and skip the missed dose.