A member asked:

I have brown urine. drinking lots of water. weightlifting 3 times a week. what could this be? increased dark urine after i exercise.

6 doctors weighed in across 3 answers
Dr. Matt Wachsman answered

Specializes in Internal Medicine

UHOH: muscle breakdown shows up as brown urine. This is incredibly dangerous and needs immediate treatment. cannot say in your particular case, but generally,

Answered 5/8/2018

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Dr. Matthew Cahill answered

Specializes in Internal Medicine

Probably myoglobinur: Many possible explanations here, including supplements that discolor urine, other causes of renal injury, dehydration, bleeding in kidney OR increased muscle breakdown and excretion in urine. Only the first would be trivial. You need to stop exercising and get your renal function and urine analysed by a doctor to be sure. The best thing you are doing is hydrating...keep that up. Get well

Answered 5/28/2018

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Dr. Robert Grieco answered

Specializes in Family Medicine

Muscle injury: The dark urine is a sure sign that you are over doing your workouts. When you push it too far you kill some muscle which is called rhabdomyolysis. Take it a bit slower.

Answered 3/18/2019

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