What laxative is best for constipation? something that would not affect someone if they have colitis?

Miralax has been the number one recommended laxative by physicians for over 10 years. Mist physicians and gastroenterologists discourage chronic use of laxatives and instead recommend good fluid intake, eating of fiber with veggies,fruits and or fiber supplements like metamucil on a daily basis. Regular exercise is also helpful in having regular BM,' s.