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How Do Saline Laxatives Work?: Detailed Datasheet

Medically reviewed by Min Clinic Staff | Updated: January 2026

WHAT ARE SALINE LAXATIVES AND HOW DO THEY WORK?

Saline laxatives are a type of laxatives mainly used for treating occasional constipation. They have salts containing highly charged ions that do not cross the intestinal walls and remain inside the intestine. Saline laxatives retain water in the intestine through osmosis, increasing the bulk of the stool. The stool formed stimulates the intestinal muscles to contract naturally, causing the feces to move along.

HOW ARE SALINE LAXATIVES USED?

As saline laxatives increase the bulk of the stool, they are used for:

WHAT ARE SIDE EFFECTS OF SALINE LAXATIVES?

Saline laxatives, when taken orally, may cause these side effects:

The information contained herein is not intended to cover all possible side effects, precautions, warnings, drug interactions, allergic reactions, or adverse effects. Check with your doctor or pharmacist to make sure these drugs do not cause any harm when you take them along with other medicines. Never stop taking your medication and never change your dose or frequency without consulting your doctor.

WHAT ARE DRUG NAMES OF SALINE LAXATIVES?

Generic and brand names of saline laxative drugs include: