Suggest Treatment For Nasal Polyps Without Surgery

I have nasel polyps in left side, due to this,there is a bloackage on the left side and my nasel bone was become disorder. so there is very less space in the right side to which i can't breath properly. I Consult with my Doctor and he suggested for operation so please let me know, operation is the only way to resolve this problem or any other way and also tell me that there is any side effect after operation?