Though occasional constipation is common amongst people, there's also chronic constipation and both cases can be related to the bowel's infrequent movement or difficulty passing stool over a period of time.
In order to ascertain the remedies or treatment for constipation, it will be wise to understand the actual causes of constipation.
Constipation most commonly occurs when body waste or stool moves very slowly through the digestive tract and cannot be passed effective from the rectum, this usually causes the stool to become hard and dry. The most commonly associated reason for constipation as explained above will be bowel obstruction.
Bowel obstruction can occur due to internal health reason like colon and rectum blockages, hormonal unbalance related to body fluids, swollen veins around the anus, or even constant consumption of certain substances the leads to the said causes, etc.
Drawing from the above, one has to be certain on the actual cause of constipation before seeking any remedy. I'll recommend you visit your doctor to ascertain the actual cause of your constipation as self medication on constipation can lead to complications.