Contraindications

Before treatment with Euthyrox® is started, the following diseases must have been excluded or treated: Unsuitable for treatment with Euthyrox® are patients with

Coronary heart disease (CHD)
Angina pectoris (narrow heart)
Arteriosclerosis
High blood pressure (hypertension)
Hypofunction of the pituitary gland (pituitary insufficiency)
Subfunction of the adrenal cortex (adrenal cortex insufficiency)
Thyroid Autonomy
Hypersensitivity to components of the drug
Untreated hyperthyroidism
Untreated hypofunction of the adrenal glands (adrenal cortex insufficiency)
Untreated hypofunction of the pituitary gland (pituitary insufficiency)
Acute heart attack
Acute heart muscle inflammation (myocarditis)
Acute heart wall inflammation (pancarditis)

Side effects

If Euthyrox® is used in a controlled manner, no side effects are to be expected, as it is a replacement for missing body hormones. However, if the prescribed dose of Euthyrox® is not tolerated or there is an overdose, symptoms similar to hyperthyroidism are possible. These include the following symptoms: If these symptoms are noticeable, the daily dose must be reduced or in extreme cases the intake of Euthyrox® must be paused for a few days.

Once the side effects have disappeared, a cautious resumption of the use of Euthyrox® is possible with a slow increase in dose of a minimal initial dose. If there is a hypersensitivity to an ingredient in Euthyrox®, allergic reactions of the skin or respiratory tract may occur.

Tachycardia
Cardiac arrhythmia
Tremble
Inner restlessness
Insomnia
Increased sweating
Heat sensation
Fever
Weight Loss
Weight gain
Vomiting
Headaches
Muscle cramps
Menstrual disorders
Diarrhea

The thyroid hormones are metabolic hormones.

They ensure a smooth metabolism and have many functions. An excess supply of thyroid hormones can therefore lead to an imbalance in metabolism. The oversupply can be caused either by an overdose of Euthyrox® or by thyroid disorders such as Graves’ disease or Hashimoto’s thyroiditis.

An overdose of Euthyrox® can result in weight loss due to increased fat loss, increased protein breakdown and increased carbohydrate breakdown. In addition to metabolic functions, thyroid hormones also have functions in the heart, lungs and muscles and are important for growth and mental development in children. Therefore, the thyroid hormones should always be kept in balance so that neither over-functioning nor under-functioning occurs.

An undersupply of thyroid hormones due to a too low dosage of Euthyrox can lead to weight gain. In this case, fat, carbohydrate and protein metabolism is slowed down and an increased storage of the substances occurs. In addition, water retention can occur.

Attention must be paid to an underfunctioning thyroid gland or a too low dosage of Euthyrox®, especially in children. In addition to weight gain, growth retardation and mental retardation can occur. For newborns, a test of thyroid hormones at U2 is therefore planned.

Diarrhea when taking Euthyrox® may be caused by an incorrect dosage. Diarrhea can be an expression of an overdose of the drug. Other symptoms of overdose are increased sweating and body temperature, heart palpitations, restlessness and tremors, and unwanted weight loss.

In case of diarrhea that lasts longer than a few days a doctor should be consulted for blood tests. Here the thyroid gland hormones can be determined and the dosage adjusted if necessary. Itching of the skin is usually a sign of an allergic reaction.

If this occurs when taking Euthyrox®, it may be due to an intolerance to one of the ingredients of Euthyrox®. If itching or other allergic symptoms persist, the product should be changed (thyroid hormones from another manufacturer). It is important to note that the absorption in the intestine varies from manufacturer to manufacturer.

It is therefore possible that the same dosage of two different preparations has different effects on the body. In this case, blood checks should be carried out at regular intervals when changing the preparation in order to adjust the dosage optimally. Depression or depressive moods can also occur if the patient has been underdosing Euthyrox® for a long time or if the thyroid gland is underactive.

When the dose of Euthyrox is adjusted, the depressive mood should disappear. The side effect hair loss is not known to occur with Euthyroxin®. Euthyroxin® has no effect on the skin or skin appendages.