According to your IgE level it indicate that you have any allergy issue so that doctor have been provided your antihistamine .
Antihistamine tablet can cause some sleep so that you should take at the night .
Next Steps
Please take consultation for best treatment.
Health Tips
Please follow good life style as take plenty of fluid and take less spicy and fatty foods and do exercise regularly with yoga and meditation and keep positive attitude to fight any disease and any problem of your life.