If 3000 mg of ibuprofen is taken in a day by 6–4 divided doses then there is no problem as it maximum daily dose is 3200 mg in arthritis patient. On the other hand , it is not recommend to use for a long period because its major side effect is stomach ulcer. read more
If you are taking any other medication with ibuprofen, the best course of action is to consult with a healthcare professional first. Finally, although ibuprofen is an OTC, higher potency preparations, such as those of 600mg per dose are actually prescription only in many countries. read more