Psyllium is what doctors here all seem to recommend; I see the stir into water kind (Metamucil) but just go with the gelatin capsules. Easier and I don't have to deal with whatever flavor they've assigned, or, as Steve says, deal with the glop. I wonder if okra has a similar effect? Get the pods cut up in water and you have to bread and fry them quickly or it turns into a gelatinous form.

Some fruits and vegetables are more effective as fiber than others. Citrus fruit for me - particularly grapefruit - scours on the way through.

Here's hoping that everything comes out ok.