Children who take ketotifen fumarate tablets as prescribed by their doctor are usually not at risk of any serious harm, but there is a risk of some side effects occurring with the drug, such as it may cause drowsiness and headaches. Ketotifen Fumarate Tablets is a kind of antihistamine, which can be used for the treatment of allergic rhinitis, allergic bronchial asthma, etc. If children are not allergic to the drug, they can usually take it under the guidance of the doctor, and it usually does not have any serious harm to the organism. However, it should be noted that in the process of taking ketotifen fumarate tablets, some side effects may occur, commonly drowsiness, tiredness, dry mouth, nausea and other gastrointestinal reactions. Occasionally, headache, dizziness, sluggishness, and weight gain are seen. It is recommended that when taking this medicine, you should strictly follow the doctor’s instructions, to grasp the precautions and adverse effects of medication, to ensure the safety of children’s medication. If there is any discomfort, it is recommended to consult a doctor promptly.