Description : How many milligrams of motrin can one take before they OD?
Last Answer : Hmm, well to recommended dose is between 200 to 400mgs, every 4 to 6 hours, for an adult. I personally usually take 400mg, every 5ish hours, but i used to take it a lot more than that, like 600mg ... it. I think they go by symptoms and if you have been taking an excessive amount, that it builds up.