Psyllium Fiber Supplements & Medication Interaction

Fiber supplements are a great way to increase your daily fiber intake, but if you are taking medication it may not be.

Psyllium fiber is great for your body but it isn’t always the best when taken with certain medications. Firstly, we recommended speaking with a doctor before adding fiber supplements into your diet.

If you are considering taking fiber supplements, that’s great! It shows you are invested in yourself and your body. But there are some things you must be cautious of when taking fiber supplements.

Too Much Fiber Isn’t Good

Yes, too much fiber can be a bad thing. When beginning to incorporate more fiber into your diet, proceed with caution. Don’t take too much too fast, this can cause bloating and diarrhea. Ease into it so you can enjoy all of fiber’s natural benefits.

Fiber Supplements & Medicine

Our all-natural Fiber Powders are sourced from the husks of the Plantago ovata plant (psyllium). Although our fiber comes from some of the best stuff, it has natural negative effects in certain medications. See, that’s why it’s important to consult with your doctor, especially if you are taking any medications. 

Since our soluble fiber doesn’t get absorbed and isn’t easily digested, (this is why fiber gives you that full feeling), it can slow the absorption of the medication too. 

Dr. Gharib from Harvard Medical School said it best when they said,

  “ If there’s lots of fiber and medication in the intestine at the same time, it’s possible that the medication may get swept along with the fiber, so it will be excreted instead of fully absorbed.”

What Kind of Medication?

Now, you’re probably asking yourself, “what kind of medication are you talking about?” Well, these:

Antidepressants medications: Amitriptyline (Elavil), Doxepin (Sinequan), Imipramine (Tofranil)

Diabetes Medications: Diabeta, Glucophage

Carbamazepine: Tegretol

Cholesterol-lowering medications: Cholestyramine (Questran), Colestipol (Colestid)

Digoxin: (Zocor)


All this information and more can be found here! Remember, most of these interactions are mild but it’s important to talk to your doctor before starting fiber supplements.

“Should I Not Give My Body Fiber?”

If fiber supplements aren't ideal for you, there are plenty of fruits and veggies that contain enough fiber for you!

No, we need some fiber in our bodies. But what is a person to do? Well, as mentioned earlier, talk with your healthcare provider. They may just recommend taking the fiber supplements 2 to 3 hours before or after you take you medication.

If none of these options fit you, don’t worry, there are plenty of fruits and veggies that can add some fiber into your diet without causing an issue.

Here on the blog, we have crafted many delicious and fiber-licious recipes like our Vegan Baked Pumpkin Oat Bars and High Fiber Tropical Smoothie!

Biggest Takeaway

Since natural psyllium fiber isn’t absorbed and digested, (adding bulk into your stool) it can have a negative interaction with certain medications. This is if you are taking your medication around the same as taking fiber supplements.

While most of these interactions are mild we encourage you to speak with your doctor before adding fiber supplements to your diet.

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