Hello, I am glad to answer your question. Cetirizine Hydrochloride Tablet is an anti-allergy over-the-counter medicine. It does not contain hormones. You can take it as much as you want. Patients with renal insufficiency should be used under the guidance of a doctor. It is not recommended for use in the first trimester of pregnancy and lactating women, and you should really drink alcohol when taking this product. No driving machinery and other high altitude work during the period. It is contraindicated for allergy sufferers. This kind of medicine is usually a day to eat a piece, the side effects are not very big, if the stomach and intestines are not good, you can cooperate with the stomach medicine. Usually pay attention to drink more water, you can solve the side effects it produces. This is my answer, I hope it can help you!