HI Well come to HCM Look this is real situation and what ever medicine child has been given that need to be continue, this is not advisable to change the medicine or add any other medicine with the advise of treating nephrologist, because this not the simple etiology like cold and cough in nephritic syndrome clinical examination very important for taking any decision regarding the line of treatment, again I would tell that continue the prescribed medicine, if you found no response then have word with doctor, take care.