20-30 minutes: Ibuprofen takes about 20-30 minutes to be effective. You can take 800 mg every 6 hours if needed. It works great for inflammation. Taken with Tylenol it reduces most pain. You can add 1000 mg of acetaminophen to your dose if you are hurting a lot. The two work really well together to stop pain! Hope this helps!
Answered 7/26/2017
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