Merlin can be given to children together with cephalosporin, which is composed of ibuprofen. Merlin mainly plays the effect of reducing fever. When the axillary temperature of children exceeds 38.5℃, they will feel headache and weakness, and can apply Merlin to relieve the symptoms. Cephalexin is a kind of antibacterial drug, which can effectively kill diseases caused by bacterial infections. Therefore, the mechanism of action of Merlin and cephalosporin are completely different, and the indications for their application are also differentiated, and taking them together will rarely cause adverse reactions in children. If parents are really unsure, they can also keep the two slightly apart for a period of time, about half an hour apart.