hi, before taking any medications, i think you need to consult a specialist, a nephrologist , for that matter, so that your kidney will be assess first, like do some laboratory test such as the level of your creatine and ultrasound, these will help you with your present condition, taking another medications will not help your kidney but will do more harm at this point, so please see or consult a doctor now, before continuing with your diet, hope i was able to convince you, thank you