A drug may be classified by the chemical type of the active ingredient or by the way it is used to treat a particular condition. Each drug can be classified into one or more drug classes.
Laxatives are drugs used to increase or stimulate the frequency of bowel evacuation (also called cathartic or purgative) or to encourage the passage of a bulkier or softer stool. Laxatives are used to relieve constipation. The common laxatives are the stimulants, stool softeners, bulking agents, lubricants and hyperosmotic agents.
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