I have had constipation since childhood. Currently I'm dependent on laxatives and been using herbal laxative and cremaffin plus 20ml to pass bowel movement. No matter how much fiber I have or how much water I drink if I don't take laxative it's hard to pass stool and it's always hard and dry and incomplete defecation. Can using laxatives in the long run will give burning sensation in throat and stomach cramps? Does it have any adverse effects?