Constipation along with rhinosinusitis.

I have been suffering from gut related issues IBS from more than 8 years and has been to many doctors. After many years of hospital visits and many medicines SODIUM PICOSULFATE is the only one thing that gave me much relief. But when i stop using it my constipation is back. I am.afraid of using it daily. So I consulted a doctor on practo and he recommended me to use PRUCOLAPRIDE. It worked well for my bowel movements for atleast 10 days but with side effects like falareup of my rhinosinusitis and bad headaches. It seems like its pushing my stool.out of colon and its causing some pain and irritation in the anus which subsides after some time. My worry is can i use sodium picosulfate daily as it is a stimulant laxative? Are there any alternative to prucolapride?