How long does it take for ibuprofen sustained-release capsules to take effect?

Under normal circumstances, the effects of ibuprofen sustained-release capsules typically begin within 1-2 hours after administration, with the analgesic and antipyretic effects lasting approximately 12 hours. However, the exact onset time may vary depending on individual absorption rates and the severity of symptoms. A detailed explanation is as follows:

After taking ibuprofen sustained-release capsules, the medication must be absorbed through the gastrointestinal tract into the bloodstream to exert its effects. If gastrointestinal function is good and absorption is rapid, with mild symptoms, relief may be felt within about an hour. However, if gastrointestinal absorption is slower or symptoms are more severe, the onset of action may be delayed up to 2 hours, although it generally does not exceed 2 hours. This formulation is designed as a sustained-release dosage form, allowing for gradual drug release and thus prolonging the duration of action, which reduces the frequency of dosing. It is important to note that the capsule should be swallowed whole without breaking or chewing, as doing so may damage the sustained-release structure, leading to rapid drug release and potentially increasing the risk of adverse reactions.

In daily life, the recommended dosage provided in the product instructions should be followed when taking ibuprofen sustained-release capsules to avoid excessive or overly frequent use. Drinking plenty of warm water during treatment helps promote drug metabolism. If symptoms do not improve after taking the medication, or if continuous use exceeds three to five days, the underlying cause should be promptly investigated and appropriately addressed to effectively manage symptoms.