Use Supplements Safely continued...
Don’t overdo it. It’s possible to get too much fiber in your diet. Studies suggest that adding 50 or more grams per day may affect how your body absorbs nutrients. So be sure to think about how much fiber you get overall, from both diet and supplements, when figuring out how much you need.
Talk to your doctor about possible interactions between fiber supplements and any medicines you’re taking. Because fiber slows down digestion, it may decrease the rate at which some drugs are absorbed.
Several studies suggest you shouldn’t combine fiber with drugs that treat depression, diabetes, high cholesterol, thyroid disorders, seizures, and various heart ailments. Even common medications like aspirin, ibuprofen, and penicillin can be affected by an increase in fiber. Your best bet: Take your meds either 1 hour before or 2 hours after eating fiber.