Key takeaways
Bisacodyl (Dulcolax) and magnesium citrate (Citroma) are both over-the-counter medications used to treat occasional constipation. However, they belong to different medication classes. Bisacodyl is a stimulant laxative that works by stimulating the muscles in your intestines to help move stool through your gut. It is typically taken as a tablet once a day and takes 6 to 12 hours to work. On the other hand, magnesium citrate is a saline laxative that helps your intestines hold onto water, making it easier to have a bowel movement. It is available as an oral solution and works faster, usually within 30 minutes to 6 hours. Bisacodyl is available in generic form and is generally well-tolerated, but it can cause belly discomfort and cramps. Magnesium citrate is also available in generic form and can cause nausea, stomach pain, and diarrhea. You should avoid magnesium citrate if you have kidney problems or need to limit magnesium or sodium intake. Additionally, magnesium citrate should be taken separately from other medications to avoid interactions.
