Treatment of OIC is successional and dependent on severity. The first mode of treatment is non-pharmacological, and includes lifestyle modifications like increasing dietary fiber, fluid intake (around per day), and physical activity. If non-pharmacological measures are ineffective, laxatives, including stool softeners ("e.g.", polyethylene glycol), bulk-forming laxatives ("e.g.", fiber supplements), stimulant laxatives ("e.g.", bisacodyl, senna), and/or enemas, may be used. A common laxative regimen for OIC is the combination of docusate and bisacodyl. Osmotic laxatives, including lactulose, polyethylene glycol, and milk of magnesia (magnesium hydroxide), as well as mineral oil (a lubricant laxative), are also commonly used for OIC.