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Side Effects of Too Much Armour Thyroid

author image Cynthia Bateman
Cynthia Bateman is a student at Southern Illinois University Edwardsville where she is pursuing her Master of Arts in English with an emphasis in composition pedagogy. She has most recently been published in the literary journal, "River Bluff Review." She is also a registered professional nurse.
Side Effects of Too Much Armour Thyroid
Armour Thyroid is prescribed to patients who are unable to produce thyroid hormone.

Armour Thyroid is the brand name of a natural thyroid hormone replacement. reports that Armour Thyroid is most commonly prescribed by a doctor for conditions in which the thyroid gland is no longer able to produce enough thyroid hormone on its own. Just as producing too much thyroid hormone causes the body's metabolism to speed up, so does taking too much Armour Thyroid. Symptoms of taking too much Armour Thyroid are consistent with symptoms of hyperthyroidism, or having too much thyroid hormone in the blood.

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Digestive Difficulties

Too much Armour Thyroid can have serious effects on the digestion system. According to, symptoms such as nausea, diarrhea, and stomach cramping may occur. Since too much Armour Thyroid speeds up the body's metabolism, patients may experience an increase in appetite and excessive thirst. Patients may also have uncontrollable weight loss if the body's energy needs exceed the number of calories consumed in a day. Weight loss may occur in spite of a increase in the amount of calories consumed.

Headaches and Mood Changes reports that as the body's metabolism speeds up, patients may experience feeling anxious. They may become easily agitated or appear irritable. Patients taking too much Armour Thyroid may feel nervous and shaky. They may report periods of restlessness or experience tingling in their hands and fingers. adds that sleep disturbances such as insomnia may occur. Throbbing headaches may be another side effect of Armour Thyroid.

Increased Heart Rate and Blood Pressure

As the body's metabolism increases, the heart must work harder and pump faster in order to meet the body's increased oxygen demands. explains that taking too much Armour Thyroid can cause an increase in heart rate and blood pressure. Patients may report a sudden racing feeling in their chest called palpitations. Increased sweating may occur, and patients may experience shortness of breath or dizziness with activity.

Muscle Weakness and Fatigue

A faster metabolism may make some patients feel weak or become easily fatigued. According to, patients may report muscle weakness. Muscle weakness may be more prominent in larger muscles such as those of the upper legs, thighs, or upper arms. Such fatigue and muscle weakness may lead to increased activity intolerance and frequent need for rest.

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