Painkillers can be taken for a few days a day, depending on the type of painkiller and the condition. For example, ibuprofen, when used to eliminate the symptoms of body fever, the duration of continuous use should not exceed 3 days, and when used to relieve the symptoms of body pain, the duration of use should not exceed 5 days. For example, celecoxib, when used for mild to moderate painful arthritis (e.g. rheumatoid arthritis, osteoarthritis, etc.), it is recommended to take it for a period of no more than 1 to 2 months, and when used for chronic arthritis with long term pain, long-term use may be considered. If you need to use painkillers, you should take them according to the actual situation and under the guidance of a doctor to avoid adverse reactions.