Eat a serving of prunes, drink lots of water, and try castor oil or a magnesium supplement for relief within a few hours. Increase your fiber intake, exercise regularly, and avoid dairy and processed foods to prevent constipation. Keep stimulant laxative use minimal—no more than 2 to 3 times per week or more than once a day. Massage your abdomen. While lifestyle changes can help relieve constipation in the long-term, gut health experts share which drinks can provide relief right away. Constipation can cause pain and stress. We outline 13 natural methods, from prune juice to fiber, that help restore smooth, pain-free digestion. Constipation occurs if you have fewer than 3 bowel movements per week or stool that's hard to pass. Learn tips for relief and when to talk with a doctor.