Can too much levothyroxine cause heart palpitations

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Author: Admin | 2025-04-28

HomeSynthroidPatient Tips Medically reviewed by Carmen Pope, BPharm. Last updated on July 31, 2024. How it worksUpsidesDownsidesBottom LineTipsResponse/effectivenessInteractions 1. How it works Synthroid is a brand (trade) name for levothyroxine. Levothyroxine is a man-made form of thyroxine (also called T4), a naturally occurring hormone produced by the thyroid gland. Synthroid replaces missing thyroxine in people whose bodies do not produce enough thyroxine naturally.Synthroid belongs to the class of medicines known as thyroid hormones. 2. Upsides Used for the treatment of hypothyroidism (low thyroxine levels in the body). Replaces or supplements low or missing thyroxine.Levothyroxine is recommended by American guidelines as the preferred treatment for hypothyroidism. Synthroid is a brand of levothyroxine.Synthroid may also be used in the management of goiter and some thyroid cancers.Synthroid is available as a generic under the name levothyroxine. 3. Downsides If you are between the ages of 18 and 60, take no other medication or have no other medical conditions, side effects you are more likely to experience include: Heart palpitations, headache, hair loss, flushing, diarrhea, and menstrual irregularities in women. May cause a decrease in bone mineral density when used long-term, increasing the risk of fractures. Postmenopausal women are most at risk. Not to be used for the treatment of obesity or weight loss. In people with normal thyroid function, the usual dosage of Synthroid is ineffective for weight reduction. Larger dosages may produce life-threatening toxicity.There is a fine line between taking too much Synthroid and too little. Overtreatment may cause detrimental cardiac effects

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