Page 65 - Prevention (February 2020)
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WHAT WE KNOW: Osmotics work within STIMULANT LAXATIVES
24 to 48 hours, depending on type—but WHAT THEY ARE: Stimulants such as
the benefit lasts only as long as you’re bisacodyl and sennosides (from the
taking them, says Dr. Oduyebo. A 2016 senna plant) cause the colon to con-
review concluded that polyethylene tract, moving its contents along.
glycol, the active ingredient in many WHAT WE KNOW: A 2018 review found
osmotics, was more effective than both senna to be as effective as or more so
placebo and lactulose (another osmotic than other types of laxatives in patients
ingredient). Caveat: You could wind up in long-term care. They work quickly;
with bloating and diarrhea. diarrhea and cramping may occur.
WHEN SHOULD YOU TAKE THEM? WHEN SHOULD YOU TAKE THEM? Stimu-
Osmotics have stronger “horsepower” lants are powerful and should be used
than fiber laxatives—and more side only after you’ve tried lifestyle modifica-
effects—says Dr. Lee, so doctors gener- tions, fiber, and osmotics, says Dr. Lee.
ally recommend them only after you’ve If constipation is severe, talk to your
tried exercise and fiber for at least a doc—a prescription, a colonoscopy, or a
couple of weeks with no success. pelvic-floor evaluation may be needed.
BRANDS: Dulcolax Fast Relief ($9 for
BRANDS: MiraLax ($16 for powder or
GETTY IMAGES. packets); Phillips’ Milk of Magnesia four suppositories); Senokot Regular
Strength ($10 for 50 tablets); Ex-Lax
($7.50 for 12 ounces); Fleet glycerin
Maximum Strength pills ($6 for 24)
suppositories ($6 for 50)
F E B RUARY 2020 • PREVENTION.COM 61
