Loratadine tablets do not belong to the group of antibiotics, which are antihistamines. Antibiotics generally refer to cephalosporins, penicillins and macrolides, which have the effect of killing and inhibiting pathogenic bacteria. Loratadine is not an antibiotic, it is a second-generation antihistamine, mainly used to treat allergic rhinitis, acute or chronic urticaria, allergic conjunctivitis and other diseases. For patients with allergic diseases, loratadine can be taken under the supervision of a doctor for treatment. Adverse effects of the drug include dry mouth, headache, and fatigue, etc. Occasionally, liver function abnormalities, jaundice, and hepatitis are seen, so the dosage should be reduced for those with impaired liver function. It is contraindicated for those who are allergic to the product, and is not recommended for pregnant or lactating women. When using the drug need to strictly follow the doctor’s instructions, not self-medication, to avoid adverse reactions. As the drug can cause fatigue, it is recommended to take it before bedtime.