Whether or not you can take Roaccutane with a lot of foam in your urine is mainly determined by your health condition. Bacterial or mycoplasma infections can be applied; other causes can not be applied. 1. Bacterial or mycoplasma infection itself has inflammation of the urinary tract, which will cause a large number of bubbles in the urine, judged by drug sensitivity test, can be regular application of erythromycin for control. 2. The increase of foam in urine caused by diabetes or renal disease does not require regular application of anti-inflammatory drugs for control, and can not apply erythromycin. A large number of foam in the urine, accompanied by obvious urinary abnormalities or pain in the kidney area, you need to consult a doctor for observation, after diagnosis of the condition in the clinician’s guidance for standardized treatment, do not blindly use their own medication.