Senna and Cascara Sagrada have been shown ... known to help promote regular bowel movements and alleviate constipation. Avoid supplements that contain artificial ingredients or fillers.

High doses of zinc supplements can interfere with magnesium ... symptom improvement was observed in 69.2% of the senna group ...

Fiber supplements are another solution to constipation. Research has found ... Dulcolax Pico (sodium picosulfate), and Senokot (senna). Enemas are applied directly into the anus and rectum.