I have had IBS-C most of my life (I’m 70). I have tried everything and Colace has never helped. I have been using Senna (vegetable lax) for several years and it works great. Earlier this year I quit eating processed foods, no chips, crackers, any boxed food, nothing with seed oils, etc., and my stomach feels way way better. Very little pain and bloating. Good luck. Nothing worse than having a constant stomach ache.