Get emergency medical help if you have signs of an allergic reaction to Dulcolax: hives; difficult breathing; swelling of your face, lips, tongue, or throat.
Stop using Dulcolax and call your doctor at once if you have:
rectal bleeding; or
no bowel movement after using Dulcolax.
Common Dulcolax side effects may include:
stomach pain or discomfort;
feeling light-headed; or
rectal burning.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
 Dulcolax side effects (more detail)
