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Hi there,This is Dr Basu, experienced Internal Medicine Specialist.I am here to address your concerns and provide great service.
Both motrin and aleve can cause kidney damage on daily long term use.
Tylenol is safe to take as it does not usually cause kidney damage.
Muscle relaxants like flexeril is also ok to take.Best wishes,It was my pleasure to help you today.If I have answered all your questions, Please rate my response Excellent (click on the 5th star).Please bookmark my profile for fast, reliable and authentic answers!This is the link to my profile:http://www.justanswer.com/medical/expert-mysticdoc/