There's no better food for constipation.
I have a long-haired cat who’s always having trouble with constipation because of hairballs. We’ve had a few scares already. This food is the one that works best for her, thanks to its psyllium content (6%). I don’t know of a better food for her. The other cats, who don’t have her problem, also do well on it; they all like it. The only thing is, I find it very expensive (over €13 per kg). Still, I’ll keep buying it, because I can’t take any chances...