It is possible to drink water in this case. Because Merrill is antipyretic drugs, its main active ingredient is ibuprofen, a non-steroidal anti-inflammatory drug, is a common antipyretic drug for children, is also safe and effective. So clinically fever after taking Merrill drinking a lot of water is not a problem, because it does not affect the absorption of the drug, and itself drinking water can also play a role in reducing fever. Because the fever-reducing mechanism of Merrill also occurs through heat dissipation, so drinking more water is helpful for heat dissipation, and will not affect the efficacy of the treatment.