The drug is usually used for 3 consecutive days, if the symptoms are not relieved after 3 days of use, such as fever and pain, you should go to the hospital again. The main component of Merlin is ibuprofen, which is a non-steroidal anti-inflammatory drug that inhibits the synthesis of prostaglandins, thus having an antipyretic and analgesic effect. This drug is mainly used for infants and children to reduce fever, relieve mild pain caused by colds and flu, such as headache and sore throat, and also have a certain effect on toothache. In short, Merlin is an antipyretic and analgesic drug that is generally used for 3 days. Merlin is best used only if the fever persists above 39°C, and is given at 60mg per dose for 1-3 years, up to 3 times a day. Then again, Merlin only plays a role in relieving fever, the main thing is the antiviral treatment, drink more water and more protein, the human body continues to high fever on the consumption of protein is very large. The high temperature does not recede can try Chinese medicine treatment, Chinese medicine in this acute disease has a very good effect. The body temperature will gradually drop after 0.5-1 hours of taking Merlin, and since children dissipate heat through sweating, it is important to replenish water after taking the drug. Merlin is designed for infants and young children to reduce fever and relieve mild headache, sore throat and toothache caused by cold and flu.