Hi thanks for consulting team HCM As per your history you are suffering from Hypothyrodism is a common endocrine disorder in which the thyroid gland does not produce enough thyroid hormone and thyonorm contains ELTROXINE in µG . here is the some common side effect- diarrhea fever hair loss (temporary; particularly in children during the first month of treatment) headache increased appetite menstrual cycle changes nervousness or irritability sensitivity to heat stomach cramps or upset stomach tremor (shaking) weight loss Less common side effect chest pain, irregular heartbeat, or shortness of breath severe allergic reaction (e.g., hives; difficulty breathing; wheezing; or swelling of the eyes, mouth, or lips) vomiting. Kindly contact to your Physician regarding Pimple.