<s>[INST] i took uristat and noticed red urine.these were red gell cap's,but i do have pain in right lower back.and severe depression.i thought they were stool softener's.they were my wife's who died 3 year's ago from c.o.p.d..could it have been the uristat or the pain in back mean's something.i have blood test's reguraly and the only problem was high colesterol.i was on statan's but stopped as last blood result's were o.k. [/INST] Hello. Thanks for writing to us. The pain in the right lower back with a red colored urine could be related to a renal infection or a stone formation. It could be a muscular pain also. You need to get a urine examination done and go for an ultrasound scan to find out the cause.I hope this information has been both informative and helpful for you. Regards, Dr. Praveen Tayal ,drtayal72@gmail.com </s>