hx of lower back pain, degenerative disc disease. 53 year old. Pulled it really bad yesterday, no numbness, went to emerg. Rx 1000mg acetaminophen and 600 ibuprophen every 6 hours. unsure now if that should be taken together or alteratively. Also I purchased ibuprophen 400/methocabamol 500 combination tablets. If I take these, should I top it up with an extra 200 mg to make it 600mg? again, should i take acetaminophen 1000mg and ibuprophen/methocabamol together or alternatively?