Nonprescription laxatives for constipation: Use with caution

: Dulcolax (bisacodyl) and Senokot or Ex-Lax (senna).

Laxatives are categorized by how they work in your body. Common options include:

Yes, you can buy many types of laxatives over the counter (OTC) at pharmacies, grocery stores, and online without a prescription. These medications are generally used for the short-term relief of occasional constipation. Types of OTC Laxatives

: These draw water into the colon from surrounding tissues to soften stool for easier passage.

: MiraLAX (polyethylene glycol), Phillips' Milk of Magnesia (magnesium hydroxide), and magnesium citrate.

: These add soluble fiber to your stool, making it larger and softer, which naturally triggers bowel contractions. They are considered the gentlest option.