Learn about the potential side effects of Dulcolax Stool Softener (docusate). Includes common and rare side effects information for consumers and healthcare professionals. How to use Dulcolax Suppository, Rectal. This product is for rectal use only. Read and follow all directions on the product package or use as directed by your doctor. What is Dulcolax. Dulcolax is a stimulant laxative used to relieve constipation and also to prepare the bowel for diagnostic or surgical procedures requiring the bowel to be empty. According to WebMD.com, Dulcolax comes with a number of side effects. Those side effects include stomach and abdominal pain or cramping, nausea, diarrhea, and weakness. Those side effects include stomach and abdominal pain or cramping, nausea, diarrhea, and weakness. The information contained herein is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. If you have any questions. The information contained herein is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. If you have any questions. Medscape - Constipation dosing for Dulcolax, Correctol (bisacodyl), frequency-based adverse effects, comprehensive interactions, contraindications, pregnancy & lactation schedules, and cost information. If you have any pain in the lower abdomen or if you have stomach cramps, fever, nausea or vomiting. Dulcolax 5mg Tablet - 10ct; Directions. If you are pregnant bisacodyl (Dulcolax, Correctol. Find patient medical information for Dulcolax (Bisacodyl) Oral on WebMD including its uses, side effects and safety, interactions, pictures, warnings and user ratings. Learn about the potential side effects of Dulcolax (bisacodyl). Includes common and rare side effects information for consumers and healthcare professionals. Medscape - Constipation dosing for Dulcolax, Correctol (bisacodyl), frequency-based adverse effects, comprehensive interactions, contraindications, pregnancy & lactation schedules, and cost information.