Why should you not take phentermine when have hyperthyroidism?

Phentermine is a sympathomimetic amine drug used in the treatment of obesity. It is a central nervous system stimulant that results in reduced hunger.

Hyperthyroidism is a condition in which the thyroid gland makes too much thyroid hormone. This can cause a number of symptoms, including weight loss, increased appetite, rapid heartbeat, and anxiety.

Taking phentermine when you have hyperthyroidism can worsen the symptoms of hyperthyroidism. This is because phentermine can cause an increase in heart rate and anxiety, and can also lead to weight loss.

In addition, phentermine can interact with some of the medications used to treat hyperthyroidism. This can increase the risk of side effects from these medications.

Therefore, it is important to avoid taking phentermine if you have hyperthyroidism.