my father is 63yrs old and he had laser treatment a few years  ago as he had a kidney stone 

last months he had a sharp pain in his back and went back to his doctor after loads of tests 

told him he was giving too much laser to break his kidney stone that's way one of the kidney became smaller than the other one , he always had a high blood pressure since years a go but no medicine was taken for it , he was always controlling his blood pressure with natural remedy 

last time when he had a pain doctor gave him metoprolol and since he is taking it he had no pain 

now he was sent to check his prostate and he has to take 50mg metoprolol for three months 

I live in U.K. But he lives in iran as they have done a big mistake by doing too much laser on his kidney that became a reason for his kidney to become smaller I don't trust those doctors , his doctor told him due to  the political sanction we don't have the machine which controls the amount of laser 

  please advice me what  treatment does he need ?

any advice which will help him 

many thanks