Ibuprofen is an anti-inflammatory drug that is an antipyretic and analgesic and can be made in many different dosage forms, including granules, capsules, tablets, as well as flat tablets or extended-release dosage forms. Flat tablets do not last long after a single dose, while extended-release formulations can last up to half a day. Fenbid is one of the ibuprofen extended-release dosage forms. Fenbid only needs to be taken twice a day to achieve drug concentration coverage throughout the day, so this is the difference between the two. In terms of application, if there is a fever, taking both ibuprofen and fenbid is actually possible, but most people choose the flat tablets of ibuprofen. If the fever is recurrent or if the main focus is to relieve pain throughout the body, you can take Fenbid because it can cover the whole day.