Had colitis 1 yr ago and been constipated since. take a probiotic supplement everyday and sometimes stool softener. does not help. what else can i do?

Fiber: A trial of daily fiber. If not effective, would consider a GI evaluation due to colitis history.

Plant-based diet: My guess is that your diet is low in fiber. A plant-based diet (whole, unprocessed plants, like vegetables, fruit, grain and nuts) is key to adding fiber. You can also add fiber with metamucil and benefiber. But unprocessed plants are healthier. Plants not only provide fiber but all kinds of nutrients like antioxidants that promote colonic health.