I have tried most laxatives out there. The one that is the gentlest and most effective is raw pumpkin seeds.
I buy them at a health food store. They have no shells.
I just eat 3 tablespoons 2 days in a row.
They also got rid of my hemorrhoids the very first time I tried them.
They have a LOT of other health benefits also.
Search for 'pumpkin seeds remedy' in the internet and you will be very surprised how good they are for you.
They curb my appetite also, which really helps with my weight loss.
But be sure and buy just the RAW ones without the shells. The salted ones and the flavored ones are roasted and don't work at all.