Guidelines For Clinical Practice
Copyright ©2012 Baishideng Publishing Group Co.
World J Gastroenterol. Sep 28, 2012; 18(36): 4994-5013
Published online Sep 28, 2012. doi: 10.3748/wjg.v18.i36.4994
Table 2 Levels of evidence and grades of recommendation of medical treatment in chronic constipation
Level of evidenceGrade of recommendation
Life style
Physical exerciseVC
Toilet trainingVC
Increased fluid intakeVC
Bulking laxatives
Insoluble fibreIIIC
Soluble fibre: PsylliumIIB
Osmotic laxatives
LactuloseIIB
SorbitolVC
Magnesium hydroxide/magnesium saltsVC
Polyethylene glycolIA
Stimulant laxatives
Sodium picosulfate, bisacodylIB
Senna, aloe, cascaraVC
Softening laxatives
DocusateVC
Serotoninergic enterokinetics
TegaserodIA1
PrucaloprideIA
Prosecretory agents
LubiprostoneIB2
LinaclotideIB3
Gastrointestinal μ-opioid antagonists
MethylnaltrexoneI(no effect)A (not used)
AlvimopanI(no effect)A (not used)2
ProbioticsVC
ColchicineIIIC
Procedures to empty the rectum-sigma
Peristeen®VC