Morning Urine Concentrated Foamy Bubbles Dark in Dysautonomia Discussion Posted May 14, 2019 · Report reply Has anyone noticed that they pass very concentrated urine in the morning and have you found ways to really help this as I think it is making me worse. The urine is quite dark and sometimes looks a bit foamy or bubbly. It clears after I get up and start drinking, and becomes clear afterwards all day as I drink a lot, so I think it is due to excessive overnight dehydration. Do you drink through the night or not and does this help if you do? Mornings are so hard with the low blood pressure and getting going is not an easy task. I am torn between drinking during the night and risking even more interrupted sleep from bathroom trips!