Will taking Euthyrox cause weight gain?
Jul 09, 2025
Source: Cainiu Health
Dr. Shen Yonghua
Introduction
Euthyrox is levothyroxine sodium tablets. When taking levothyroxine sodium tablets, weight gain usually does not occur if the dosage follows medical advice appropriately. However, if the dosage is insufficient to restore normal thyroid function, weight gain may happen. When the proper dose of levothyroxine sodium is taken and thyroid hormone levels are maintained within the normal range, the body's metabolism remains stable, energy expenditure and intake are balanced, and body weight will not experience abnormal changes due to the medication.
Levothyroxine sodium tablets (brand name: Euthyrox) generally do not cause weight gain when taken at the proper dosage as prescribed by a physician. However, if the dosage is insufficient to restore normal thyroid function, weight gain may occur. If any abnormalities arise, prompt medical consultation is advised. Detailed explanation is as follows:
When the appropriate dosage of levothyroxine sodium is administered, thyroid hormone levels remain within the normal range, the body's metabolism remains stable, energy intake and consumption are balanced, and body weight remains steady without abnormal changes caused by the medication.
If the dosage of levothyroxine sodium is insufficient, thyroid function may not be adequately corrected, leaving the body in a state of hormone deficiency. This results in a slower metabolic rate, reduced calorie consumption, and excess energy being converted into fat accumulation, thereby leading to weight gain.
Regular monitoring of thyroid function is necessary while taking levothyroxine sodium, with dosage adjustments made based on test results. Additionally, maintaining a balanced diet and engaging in appropriate physical activity are essential to maintaining a healthy weight.
