What are the side effects of Euthyrox?
Feb 14, 2025
Source: Cainiu Health
Dr. Bai Hongmei
Introduction
In general, Euthyrox refers to levothyroxine sodium tablets, and its possible side effects may include arrhythmia, osteoporosis, insomnia, excessive sweating, mood swings, and others. In daily life, when taking Euthyrox, it is important to strictly follow medical instructions regarding the timing and dosage of medication; regularly recheck thyroid function to allow timely adjustment of the medication dose; and seek medical attention promptly if any adverse symptoms occur, informing the doctor of the medication usage.
Generally speaking, Euthyrox refers to levothyroxine sodium tablets, and its possible side effects may include arrhythmia, osteoporosis, insomnia, excessive sweating, mood swings, and others. A detailed explanation is as follows:
1. Arrhythmia
Levothyroxine sodium tablets mainly function to supplement thyroid hormone. If the dosage is too high, it may cause excessive levels of thyroid hormone in the body, thereby increasing heart rate and contractility, leading to arrhythmias such as tachycardia and premature beats. Severe cases may impair normal heart function and increase the risk of heart disease.
2. Osteoporosis
Long-term excessive use of levothyroxine sodium tablets may result in excess thyroid hormone, which enhances osteoclast activity, accelerates bone resorption, and inhibits osteoblast function, leading to bone loss. This often causes osteoporosis, particularly in populations already prone to the condition, such as postmenopausal women, with more pronounced effects.
3. Insomnia
The thyroid hormone in levothyroxine sodium tablets has an excitatory effect on the nervous system. Improper use of the medication and resulting hormonal imbalances may stimulate the central nervous system, keeping it in an excited state, which can lead to difficulty falling asleep, light sleep, and frequent dreams, thus affecting sleep quality. Long-term use may result in insomnia.
4. Excessive Sweating
Excessive intake of levothyroxine sodium tablets may cause abnormally increased metabolic activity and heat production. To dissipate heat, the sweat glands become more active, resulting in excessive sweating. Patients often sweat more easily than normal individuals, even in calm conditions or at comfortable temperatures. In severe cases, this may affect daily life.
5. Mood Swings
Improper use of the medication may lead to abnormal hormone levels, affecting the synthesis and metabolism of neurotransmitters and interfering with the brain's emotional regulation function. This may cause emotional instability, anxiety, irritability, depression, and other mood fluctuations.
In daily life, when taking Euthyrox, it is essential to strictly follow medical instructions regarding timing and dosage; regularly retest thyroid function to adjust the medication dosage promptly; and seek medical attention immediately if adverse symptoms occur, informing the doctor of the medication history.
