Metamucil and Miralax.
No, no! Metamucil seizes you up, not loosen. I found out that its for those who tend toward diarrhea, not constipation.
For proper consistency and regularity, I eat a pitted prune ot two every day. That works quite well, even better if your prunes are the ones canned in a jar in their juice.
For this article poster, knarf, I'd say also get some bottled prune juice and drink a glass every day. The juice is quite delicious and effective, naturally.
Don't overdo brick cheese--the rennet used to coagulate milk can make you very unhappy.