In Norway the oil and gas sector produces 23% of GDP. In the UK the financial services sector produces 10% of GDP. In Canada, a sector like Professional, scientific and technical services produces 5% of GDP.
ibuprofen will exit your system in 12-24 hours, depending on your body. the dosage doesn't effect time in your system, it just effects the potency of the drug during its duration i your body. so it may only take 12 hours to get out of your body, and the 600mg is just telling you how strong it will be in your body.
First off the 800 mg prescription ibuprofen is an extended release so it work for a longer period of time than the normal 200 mg over the counter kind. the prescription likewise has a coating on the pills that prevents upset stomach and minimizes the risk for ulcers associated with high doses of Ibuprofen.