Dear Darshan, I really appreciate your care & concern for well being of your father.Although you have not mentioned all details, I assume that your father has Chronic kidney disease. Dialysis is a treatment which is instituted only when essential & becomes life-saving for the patient.Every patient may not tolerate the dialysis well & that depends on many factors. I strongly feel that your father needs thrice a week dialysis against twice. His tolerance may become better there after. If he is very much scared of hemodialysis,you can switch over to CAPD. I strongly advocate you to continue dialysis.There are various diet plans, drugs available which can lessen the bad -effects of dialysis. THere is no substitute available neither in Ayurved nor in Homeopathy for dialysis,however these drugs may help a person tolerate dialysis better.