Mark Hyman, MD: The Super Fiber That Controls Your Appetite and Blood Sugar
by Scott Smith
9. Choose GM. By now, you know that my favorite kind is glucomannan (GM), or konjac. Many companies sell it in capsule form. Although I don’t normally recommend specific brands, I like the one produced by Natural Factors called WellBetX. You can take 2 to 4 capsules with a glass of water, 30 to 60 minutes before eating. Don’t take any medications within 1 hour before or 2 hours after taking it because the fiber may absorb the medication.