Fiber Powder Ingredients & Drug Interactions
by Nutrilite
What is this page for?
First and foremost: checking Fiber Powder against your medications. The heart of this page is the interaction checker and the full interaction report — how this product’s ingredients may interact with prescription and over-the-counter medicines you may be taking.
Around that, we add a pharmacist’s high-level view of the product as a whole — what’s inside, the evidence for its stated use, how transparent the label is, and what safety data exists — so you can see the full picture in one place. It’s educational information from our licensed clinical databases and the clinical staff at HelloPharmacist — not medical advice — and we don’t sell or endorse products. Our editorial policy
Fiber Powder is a dietary supplement by Nutrilite with 5 active ingredients. Its ingredients are commonly taken for constipation, diarrhea, high cholesterol.Based on those ingredients, 2,053 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Dietary Fiber, Inulin. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
Check Your Meds Against Fiber Powder by Nutrilite
Ask about any prescription or over-the-counter medication and we check it for interactions with Fiber Powder by Nutrilite — and tell you which ingredient is responsible.
AI summaries are generated from our interaction database for education only — always confirm with your pharmacist. How we use AI
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HelloPharmacist Scorecard of Fiber Powder by Nutrilite
Our pharmacy team’s full take, with four database checks built into the cards below — a summary of what is known, not a grade of the product itself.
What’s inside
Full disclosure
Nutrilite Fiber Powder has 4 active ingredients: soluble fiber, inulin, digestion resistant maltodextrin, and partially hydrolyzed guar gum. These are all types of dietary fiber designed to support digestive function.
The product contains no inactive ingredients listed.
Does it work?
Strong evidence
Inulin, one of the fiber sources here, is possibly effective for obesity, constipation, and diabetes management based on the data we hold. For nonalcoholic fatty liver disease and iron deficiency anemia, the evidence isn't established well enough to rate it.
The other fiber ingredients' effectiveness isn't documented in our data.
How safe is it?
Well-documented data
Inulin is generally well tolerated at food amounts, but concentrated supplement doses aren't as well studied — talk to your doctor before using this product if you have concerns. The most common side effects are bloating, constipation, diarrhea, flatulence, and stomach cramps, especially at doses above 30 grams.
Anaphylaxis (severe allergic reaction) from inulin is rare but has been reported. All of these gastrointestinal effects tend to be worse when you start at higher doses.
Meds to double-check
Moderate interaction found
Double-check any antidiabetes drugs (diabetes medications) before you start — inulin may increase the risk of low blood sugar. We also couldn't check three other fiber ingredients in this product, so run your exact medications through the tool on this page to be sure.
The bottom line
Scorecard at a glanceFully disclosed formula with clinical evidence supporting its stated purpose. Moderate medication interactions have been identified, and safety information is well characterized.
If you're looking for a fiber supplement to support digestion and you don't take blood sugar medication, this is straightforward to use. If you do take diabetes drugs, check your specific medications with our tool first — inulin might affect how they work.
Start with a smaller dose to let your gut adjust and avoid the bloating many people experience. Talk to your pharmacist about whether this product fits with your other medications and health goals.
Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI
Assessment coverage: 2 of 5 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated May 21, 2025.
This Scorecard evaluates available label information, ingredient evidence, and known medication-safety considerations. It does not independently verify product identity, purity, potency, contamination, or manufacturing quality. How these ratings are computed
General information
Key facts about Fiber Powder, straight from the product label.
| Brand | Nutrilite |
|---|---|
| Barcode (UPC) | 102736 |
| Net contents | 30 Stick Pack(s) |
| Market status | On market |
| Date entered into DSLD | May 21, 2025 |
| DSLD ID | 328157 |
| Product type | Fiber And Other Nutrients |
| Supplement form | Powder |
| Dietary claims / uses | Nutrient, All Other, Structure/Function |
| Intended target group(s) | Children 4 or More Years of Age, Adult (18 - 50 Years), Kosher, Halal |
Everything in this section is reproduced from the manufacturer’s own product label — it’s the label speaking, not HelloPharmacist. We show it so you can see exactly what the maker states; we don’t verify or endorse those statements.
Supplement Facts
The label details for Fiber Powder by Nutrilite, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| Calories | 15 Calorie(s) | -- |
| Total Carbohydrates | 4 Gram(s) | 1% |
| Dietary Fiber | 4 Gram(s) | 14% |
| Fiber, Soluble | 4 Gram(s) | -- |
| Inulin | 1.5 Gram(s) | -- |
| Digestion Resistant Maltodextrin | 1.5 Gram(s) | -- |
| Guar Gum, Partially Hydrolyzed | 1.5 Gram(s) | -- |
Tap any ingredient to jump to its full detail below.
These statements are the manufacturer’s wording, reproduced from the product label — the label is saying it, not HelloPharmacist. We don’t verify or endorse them.
Formula
Nutrilite Fiber Powder is a unique blend of three natural prebiotic fibers that, when added to a high-fiber diet, offer a convenient way to feed the good bacteria in your gut while supporting normal gastrointestinal health and regularity.
Crescent M (Halal)
Star-K (Kosher)
Suggested/Recommended/Usage/Directions
This taste-free, non-gritty powder can be sprinkled onto foods or mixed into liquids. Use directions: Dissolve contents of one stick pack in 8 to 12 ounces of water or juice, or sprinkle on food. Drink a full glass (8 ounces) of liquid with each stick pack. For adults and children 12 years of age or older, one to two stick packs per day, gradually increasing fiber intake. Best if consumed with a meal.
1 stick pack, 1-2x a day
FDA Disclaimer Statement
This statement has not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Precautions
Children under 12 years of age, pregnant women or nursing mothers, or anyone with a medical condition should consult with a physician before using this product. Keep out of reach of children.
Children under 12 years of age, pregnant women or nursing mothers, or anyone with a medical condition should consult with a physician before using this product.
Take this product with at least 8 ounces (a full glass) of liquid. Taking this product without enough liquid may cause choking.
Exclusively from Amway
Storage
Store in a cool, dry place.
Brand IP Statement(s)
Copyright Alticor Inc.
Seals/Symbols
NSF Contents Certified Crescent M (Halal) Star-K (Kosher)
Quality you can trust since 1934
Formulation
Supports gut microbiome health When used in combination with a high-fiber diet.
FDA Statement of Identity
Dietary Supplement
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
Fiber Powder by Nutrilite label
The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.
Label images are published by the NIH Dietary Supplement Label Database for the version of this product on file. Always read your actual product label.
View the full label (PDF)The Ingredients in Fiber Powder by Nutrilite
These are the 5 active ingredients this product is made of. Select any to open its full monograph.
Serving size1 Stick Pack(s) Dosage formPowder Servings per container30 Amounts shown are per serving.
Most supplement products combine several ingredients, and a medication can interact with the product through any one of them. Each ingredient below shows whether it has known drug interactions.
Dietary Fiber
Interacts with2,025 drugs
Black psyllium is a soluble-fiber supplement made from the seeds of a Plantago plant, used mostly to ease constipation and support digestive health. I...
Dietary Fiber monograph & interactionsFiber, Soluble
Inulin
Interacts with86 drugs
Inulin is a type of plant fiber (a prebiotic) found naturally in foods like chicory root, onions, and garlic, and it is widely added to supplements an...
Inulin monograph & interactionsDigestion Resistant Maltodextrin
Guar Gum, Partially Hydrolyzed
Fiber Powder by Nutrilite Drug Interactions
HelloPharmacist Interaction Report
Nutrilite Fiber Powder contains inulin, which has a documented interaction with antidiabetes drugs.
Inulin might theoretically increase the risk of low blood sugar (hypoglycemia) when used with diabetes medications, though research on whether inulin itself lowers blood sugar is mixed. This is rated a Minor interaction.
Read the full breakdown — every affected drug type, severity by severity
The product also contains fiber, soluble fiber, digestion resistant maltodextrin, and guar gum, partially hydrolyzed — we could not check these ingredients because we hold no interaction data for them.
Altogether, these interactions span 85 individual medications. Before you start this product, use the medication checker on this page to look up your exact drugs, especially if you take anything for blood sugar control.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against Fiber Powder?
Ask about interactions with your drugs in plain English — “Can I take it with lisinopril?” — and we find you the answer in seconds, ingredient by ingredient.
Go to the checkerIngredients driving the most interactions
Individual Drug Interactions
The ingredients in Fiber Powder interact with 2,053 drugs. Click any drug to see the details.
2 of the 5 ingredients in Fiber Powder interact with drugs. Each result below shows which ingredient is responsible. Dietary Fiber Inulin
Alogliptin, MetforminKazano
How Alogliptin, Metformin interacts with Fiber Powder — through 2 ingredients. Tap an ingredient for the detail:
Dietary FiberOral Drugs, Metformin (glucophage) Moderate
Interaction Summary
Theoretically, psyllium might increase, decrease, or have no effect on the absorption of oral drugs.
Read the full Dietary Fiber + Alogliptin, Metformin interactionInulinAntidiabetes Drugs Minor
Interaction Summary
Theoretically, inulin might increase the risk of hypoglycemia with antidiabetes drugs.
Read the full Inulin + Alogliptin, Metformin interactionCanagliflozin, MetforminInvokamet
How Canagliflozin, Metformin interacts with Fiber Powder — through 2 ingredients. Tap an ingredient for the detail:
Dietary FiberOral Drugs, Metformin (glucophage) Moderate
Interaction Summary
Theoretically, psyllium might increase, decrease, or have no effect on the absorption of oral drugs.
Read the full Dietary Fiber + Canagliflozin, Metformin interactionInulinAntidiabetes Drugs Minor
Interaction Summary
Theoretically, inulin might increase the risk of hypoglycemia with antidiabetes drugs.
Read the full Inulin + Canagliflozin, Metformin interactionCanagliflozin, Metformin HydrochlorideInvokamet XR
How Canagliflozin, Metformin Hydrochloride interacts with Fiber Powder — through 2 ingredients. Tap an ingredient for the detail:
Dietary FiberMetformin (glucophage), Oral Drugs Moderate
Interaction Summary
Theoretically, black psyllium might increase the therapeutic and adverse effects of metformin.
Read the full Dietary Fiber + Canagliflozin, Metformin Hydrochloride interactionInulinAntidiabetes Drugs Minor
Interaction Summary
Theoretically, inulin might increase the risk of hypoglycemia with antidiabetes drugs.
Read the full Inulin + Canagliflozin, Metformin Hydrochloride interactionCarbamazepineCarbatrol, Carnexiv, Equetro, Tegretol, Tegretol XR
How Carbamazepine interacts with Fiber Powder — through 1 ingredient. Tap an ingredient for the detail:
Dietary FiberOral Drugs, Carbamazepine (tegretol) Moderate
Interaction Summary
Theoretically, psyllium might increase, decrease, or have no effect on the absorption of oral drugs.
Read the full Dietary Fiber + Carbamazepine interactionDapagliflozin Propanediol, MetforminXigduo XR
How Dapagliflozin Propanediol, Metformin interacts with Fiber Powder — through 2 ingredients. Tap an ingredient for the detail:
Dietary FiberMetformin (glucophage), Oral Drugs Moderate
Interaction Summary
Theoretically, black psyllium might increase the therapeutic and adverse effects of metformin.
Read the full Dietary Fiber + Dapagliflozin Propanediol, Metformin interactionInulinAntidiabetes Drugs Minor
Interaction Summary
Theoretically, inulin might increase the risk of hypoglycemia with antidiabetes drugs.
Read the full Inulin + Dapagliflozin Propanediol, Metformin interactionDapagliflozin, Metformin Hydrochloride, Saxagliptin HydrochlorideQternmet XR
How Dapagliflozin, Metformin Hydrochloride, Saxagliptin Hydrochloride interacts with Fiber Powder — through 2 ingredients. Tap an ingredient for the detail:
Dietary FiberMetformin (glucophage), Oral Drugs Moderate
Interaction Summary
Theoretically, black psyllium might increase the therapeutic and adverse effects of metformin.
Read the full Dietary Fiber + Dapagliflozin, Metformin Hydrochloride, Saxagliptin Hydrochloride interactionInulinAntidiabetes Drugs Minor
Interaction Summary
Theoretically, inulin might increase the risk of hypoglycemia with antidiabetes drugs.
Read the full Inulin + Dapagliflozin, Metformin Hydrochloride, Saxagliptin Hydrochloride interactionEmpagliflozin, Linagliptin, Metformin HydrochlorideTrijardy XR
How Empagliflozin, Linagliptin, Metformin Hydrochloride interacts with Fiber Powder — through 2 ingredients. Tap an ingredient for the detail:
Dietary FiberOral Drugs, Metformin (glucophage) Moderate
Interaction Summary
Theoretically, psyllium might increase, decrease, or have no effect on the absorption of oral drugs.
Read the full Dietary Fiber + Empagliflozin, Linagliptin, Metformin Hydrochloride interactionInulinAntidiabetes Drugs Minor
Interaction Summary
Theoretically, inulin might increase the risk of hypoglycemia with antidiabetes drugs.
Read the full Inulin + Empagliflozin, Linagliptin, Metformin Hydrochloride interactionEmpagliflozin, MetforminSynjardy
How Empagliflozin, Metformin interacts with Fiber Powder — through 2 ingredients. Tap an ingredient for the detail:
Dietary FiberMetformin (glucophage), Oral Drugs Moderate
Interaction Summary
Theoretically, black psyllium might increase the therapeutic and adverse effects of metformin.
Read the full Dietary Fiber + Empagliflozin, Metformin interactionInulinAntidiabetes Drugs Minor
Interaction Summary
Theoretically, inulin might increase the risk of hypoglycemia with antidiabetes drugs.
Read the full Inulin + Empagliflozin, Metformin interactionEmpagliflozin, Metformin HydrochlorideSynjardy XR
How Empagliflozin, Metformin Hydrochloride interacts with Fiber Powder — through 2 ingredients. Tap an ingredient for the detail:
Dietary FiberOral Drugs, Metformin (glucophage) Moderate
Interaction Summary
Theoretically, psyllium might increase, decrease, or have no effect on the absorption of oral drugs.
Read the full Dietary Fiber + Empagliflozin, Metformin Hydrochloride interactionInulinAntidiabetes Drugs Minor
Interaction Summary
Theoretically, inulin might increase the risk of hypoglycemia with antidiabetes drugs.
Read the full Inulin + Empagliflozin, Metformin Hydrochloride interactionErtugliflozin, Metformin HydrochlorideSegluromet
How Ertugliflozin, Metformin Hydrochloride interacts with Fiber Powder — through 2 ingredients. Tap an ingredient for the detail:
Dietary FiberOral Drugs, Metformin (glucophage) Moderate
Interaction Summary
Theoretically, psyllium might increase, decrease, or have no effect on the absorption of oral drugs.
Read the full Dietary Fiber + Ertugliflozin, Metformin Hydrochloride interactionInulinAntidiabetes Drugs Minor
Interaction Summary
Theoretically, inulin might increase the risk of hypoglycemia with antidiabetes drugs.
Read the full Inulin + Ertugliflozin, Metformin Hydrochloride interactionGlipizide, MetforminMetaglip
How Glipizide, Metformin interacts with Fiber Powder — through 2 ingredients. Tap an ingredient for the detail:
Dietary FiberMetformin (glucophage), Oral Drugs Moderate
Interaction Summary
Theoretically, black psyllium might increase the therapeutic and adverse effects of metformin.
Read the full Dietary Fiber + Glipizide, Metformin interactionInulinAntidiabetes Drugs Minor
Interaction Summary
Theoretically, inulin might increase the risk of hypoglycemia with antidiabetes drugs.
Read the full Inulin + Glipizide, Metformin interactionGlyburide, MetforminGlucovance
How Glyburide, Metformin interacts with Fiber Powder — through 2 ingredients. Tap an ingredient for the detail:
Dietary FiberMetformin (glucophage), Oral Drugs Moderate
Interaction Summary
Theoretically, black psyllium might increase the therapeutic and adverse effects of metformin.
Read the full Dietary Fiber + Glyburide, Metformin interactionInulinAntidiabetes Drugs Minor
Interaction Summary
Theoretically, inulin might increase the risk of hypoglycemia with antidiabetes drugs.
Read the full Inulin + Glyburide, Metformin interactionLinagliptin, Metformin HydrochlorideJentadueto XR
How Linagliptin, Metformin Hydrochloride interacts with Fiber Powder — through 2 ingredients. Tap an ingredient for the detail:
Dietary FiberMetformin (glucophage), Oral Drugs Moderate
Interaction Summary
Theoretically, black psyllium might increase the therapeutic and adverse effects of metformin.
Read the full Dietary Fiber + Linagliptin, Metformin Hydrochloride interactionInulinAntidiabetes Drugs Minor
Interaction Summary
Theoretically, inulin might increase the risk of hypoglycemia with antidiabetes drugs.
Read the full Inulin + Linagliptin, Metformin Hydrochloride interactionLithium Carbonate (prescription Drug)Eskalith, Lithium Carbonate
How Lithium Carbonate (prescription Drug) interacts with Fiber Powder — through 1 ingredient. Tap an ingredient for the detail:
Dietary FiberOral Drugs, Lithium Moderate
Interaction Summary
Theoretically, psyllium might increase, decrease, or have no effect on the absorption of oral drugs.
Read the full Dietary Fiber + Lithium Carbonate (prescription Drug) interactionMetforminGlucophage, Metformin
How Metformin interacts with Fiber Powder — through 2 ingredients. Tap an ingredient for the detail:
Dietary FiberOral Drugs, Metformin (glucophage) Moderate
Interaction Summary
Theoretically, psyllium might increase, decrease, or have no effect on the absorption of oral drugs.
Read the full Dietary Fiber + Metformin interactionInulinAntidiabetes Drugs Minor
Interaction Summary
Theoretically, inulin might increase the risk of hypoglycemia with antidiabetes drugs.
Read the full Inulin + Metformin interactionMetformin HydrochlorideRiomet ER
How Metformin Hydrochloride interacts with Fiber Powder — through 2 ingredients. Tap an ingredient for the detail:
Dietary FiberMetformin (glucophage), Oral Drugs Moderate
Interaction Summary
Theoretically, black psyllium might increase the therapeutic and adverse effects of metformin.
Read the full Dietary Fiber + Metformin Hydrochloride interactionInulinAntidiabetes Drugs Minor
Interaction Summary
Theoretically, inulin might increase the risk of hypoglycemia with antidiabetes drugs.
Read the full Inulin + Metformin Hydrochloride interactionMetformin, LinagliptinJentadueto
How Metformin, Linagliptin interacts with Fiber Powder — through 2 ingredients. Tap an ingredient for the detail:
Dietary FiberMetformin (glucophage), Oral Drugs Moderate
Interaction Summary
Theoretically, black psyllium might increase the therapeutic and adverse effects of metformin.
Read the full Dietary Fiber + Metformin, Linagliptin interactionInulinAntidiabetes Drugs Minor
Interaction Summary
Theoretically, inulin might increase the risk of hypoglycemia with antidiabetes drugs.
Read the full Inulin + Metformin, Linagliptin interactionMetformin, RosiglitazoneAvandamet
How Metformin, Rosiglitazone interacts with Fiber Powder — through 2 ingredients. Tap an ingredient for the detail:
Dietary FiberMetformin (glucophage), Oral Drugs Moderate
Interaction Summary
Theoretically, black psyllium might increase the therapeutic and adverse effects of metformin.
Read the full Dietary Fiber + Metformin, Rosiglitazone interactionInulinAntidiabetes Drugs Minor
Interaction Summary
Theoretically, inulin might increase the risk of hypoglycemia with antidiabetes drugs.
Read the full Inulin + Metformin, Rosiglitazone interactionMetformin, SitagliptinJanumet, Janumet XR
How Metformin, Sitagliptin interacts with Fiber Powder — through 2 ingredients. Tap an ingredient for the detail:
Dietary FiberOral Drugs, Metformin (glucophage) Moderate
Interaction Summary
Theoretically, psyllium might increase, decrease, or have no effect on the absorption of oral drugs.
Read the full Dietary Fiber + Metformin, Sitagliptin interactionInulinAntidiabetes Drugs Minor
Interaction Summary
Theoretically, inulin might increase the risk of hypoglycemia with antidiabetes drugs.
Read the full Inulin + Metformin, Sitagliptin interactionOlanzapineZyprexa
How Olanzapine interacts with Fiber Powder — through 1 ingredient. Tap an ingredient for the detail:
Dietary FiberOral Drugs, Olanzapine (zyprexa) Moderate
Interaction Summary
Theoretically, psyllium might increase, decrease, or have no effect on the absorption of oral drugs.
Read the full Dietary Fiber + Olanzapine interactionSaxagliptin, Metformin XrKombiglyze
How Saxagliptin, Metformin Xr interacts with Fiber Powder — through 2 ingredients. Tap an ingredient for the detail:
Dietary FiberOral Drugs, Metformin (glucophage) Moderate
Interaction Summary
Theoretically, psyllium might increase, decrease, or have no effect on the absorption of oral drugs.
Read the full Dietary Fiber + Saxagliptin, Metformin Xr interactionInulinAntidiabetes Drugs Minor
Interaction Summary
Theoretically, inulin might increase the risk of hypoglycemia with antidiabetes drugs.
Read the full Inulin + Saxagliptin, Metformin Xr interactionSitagliptin, MetforminZituvimet
How Sitagliptin, Metformin interacts with Fiber Powder — through 2 ingredients. Tap an ingredient for the detail:
Dietary FiberOral Drugs, Metformin (glucophage) Moderate
Interaction Summary
Theoretically, psyllium might increase, decrease, or have no effect on the absorption of oral drugs.
Read the full Dietary Fiber + Sitagliptin, Metformin interactionInulinAntidiabetes Drugs Minor
Interaction Summary
Theoretically, inulin might increase the risk of hypoglycemia with antidiabetes drugs.
Read the full Inulin + Sitagliptin, Metformin interactionPioglitazone, MetforminActoPlus Met
How Pioglitazone, Metformin interacts with Fiber Powder — through 2 ingredients. Tap an ingredient for the detail:
Dietary FiberMetformin (glucophage), Oral Drugs Moderate
Interaction Summary
Theoretically, black psyllium might increase the therapeutic and adverse effects of metformin.
Read the full Dietary Fiber + Pioglitazone, Metformin interactionInulinAntidiabetes Drugs Minor
Interaction Summary
Theoretically, inulin might increase the risk of hypoglycemia with antidiabetes drugs.
Read the full Inulin + Pioglitazone, Metformin interaction"phentolamineOraVerse, Rogitine, Ryzumvi
How "phentolamine interacts with Fiber Powder — through 1 ingredient. Tap an ingredient for the detail:
Dietary FiberOral Drugs Minor
Interaction Summary
Theoretically, psyllium might increase, decrease, or have no effect on the absorption of oral drugs.
Read the full Dietary Fiber + "phentolamine interaction6-mercaptopurinePurinethol
How 6-mercaptopurine interacts with Fiber Powder — through 1 ingredient. Tap an ingredient for the detail:
Dietary FiberOral Drugs Minor
Interaction Summary
Theoretically, psyllium might increase, decrease, or have no effect on the absorption of oral drugs.
Read the full Dietary Fiber + 6-mercaptopurine interactionAbacavirZiagen
How Abacavir interacts with Fiber Powder — through 1 ingredient. Tap an ingredient for the detail:
Dietary FiberOral Drugs Minor
Interaction Summary
Theoretically, psyllium might increase, decrease, or have no effect on the absorption of oral drugs.
Read the full Dietary Fiber + Abacavir interactionAbacavir Sulfate, Dolutegravir, LamivudineTriumeq
How Abacavir Sulfate, Dolutegravir, Lamivudine interacts with Fiber Powder — through 1 ingredient. Tap an ingredient for the detail:
Dietary FiberOral Drugs Minor
Interaction Summary
Theoretically, psyllium might increase, decrease, or have no effect on the absorption of oral drugs.
Read the full Dietary Fiber + Abacavir Sulfate, Dolutegravir, Lamivudine interactionAbacavir, LamivudineEpzicom
How Abacavir, Lamivudine interacts with Fiber Powder — through 1 ingredient. Tap an ingredient for the detail:
Dietary FiberOral Drugs Minor
Interaction Summary
Theoretically, psyllium might increase, decrease, or have no effect on the absorption of oral drugs.
Read the full Dietary Fiber + Abacavir, Lamivudine interactionAbciximabReoPro
How Abciximab interacts with Fiber Powder — through 1 ingredient. Tap an ingredient for the detail:
Dietary FiberOral Drugs Minor
Interaction Summary
Theoretically, psyllium might increase, decrease, or have no effect on the absorption of oral drugs.
Read the full Dietary Fiber + Abciximab interactionAbemaciclibVerzenio
How Abemaciclib interacts with Fiber Powder — through 1 ingredient. Tap an ingredient for the detail:
Dietary FiberOral Drugs Minor
Interaction Summary
Theoretically, psyllium might increase, decrease, or have no effect on the absorption of oral drugs.
Read the full Dietary Fiber + Abemaciclib interactionEach ingredient & the kinds of drugs it affects
For each ingredient in Fiber Powder with known interactions, here are the types of medications they can affect. Open any type for the detail — or search your exact drug in the checker above.
Dietary Fiber
Carbamazepine (Tegretol)
Theoretically, black psyllium might reduce the effects of carbamazepine and increase the risk for convulsions.
Theoretically, black psyllium might reduce carbamazepine absorption. A preliminary study using blond psyllium reported decreased carbamazepine bioavailability due to binding of the drug to psyllium, as well as reduction of available fluid in the gut for dissolution of the drug. This interaction may also occur with black psyllium.
Lithium
Theoretically, taking black psyllium at the same time as lithium might reduce lithium absorption.
The fiber in black psyllium might reduce lithium absorption and plasma levels. Some case reports describe a reduction in plasma lithium levels with concomitant administration of blond psyllium. This was reversed when psyllium was stopped. This interaction may also occur with black psyllium.
Metformin (Glucophage)
Theoretically, black psyllium might increase the therapeutic and adverse effects of metformin.
Animal research shows that concurrent consumption of blond psyllium with metformin slows and increases the absorption of metformin. This interaction may also occur with black psyllium. To avoid changes in absorption, take psyllium 30-60 minutes after metformin.
Olanzapine (Zyprexa)
Theoretically, taking black psyllium at the same time as olanzapine might reduce olanzapine absorption.
The fiber in black psyllium might decrease the absorption of olanzapine. A single case report describes a reduction in the effectiveness of olanzapine when it was concomitantly administered with an unspecified type of psyllium 3 grams orally twice daily. This effect was reversed when psyllium was stopped.
Digoxin (Lanoxin)
Theoretically, taking black psyllium at the same time as digoxin might reduce digoxin absorption and decrease digoxin levels.
Psyllium might bind digoxin in the gut. However, some clinical evidence suggests that psyllium does not impact digoxin absorption.
Ethinyl Estradiol
Theoretically, taking black psyllium at the same time as ethinyl estradiol might alter levels of estradiol.
Concurrent use of blond psyllium with ethinyl estradiol results in a slight increase in the extent of ethinyl estradiol absorption and a slower rate of absorption. This is unlikely to be clinically significant.
Oral Drugs
Theoretically, psyllium might increase, decrease, or have no effect on the absorption of oral drugs.
Psyllium seems to have variable effects on drug absorption. To avoid changes in absorption, take psyllium 30-60 minutes after oral medications. Animal research shows that blond psyllium delays and increases the absorption of metformin and ethinyl estradiol. Case reports and animal research suggest that blond psyllium might reduce absorption of lithium, digoxin, olanzapine, and carbamazepine. Finally, some pharmacokinetic studies show that psyllium does not affect the absorption of levothyroxine or warfarin. Although many of these studies evaluated blond psyllium, the fiber content in black psyllium may have similar effects.
Inulin
Antidiabetes Drugs
Theoretically, inulin might increase the risk of hypoglycemia with antidiabetes drugs.
Some clinical research shows that inulin improves glycemic control in patients with diabetes; however, it is unclear if it has hypoglycemic effects.
Brand information
Manufacturer and brand details for Fiber Powder, from the product label.
Nutrilite
See all Nutrilite products- Name
- Amway Corp.
- City
- Ada
- State
- MI
- ZipCode
- 49355
- Phone Number
- 1-800-253-6500
- Web Address
- Amway.com/Nutrilite
Fiber Powder by Nutrilite: Common Questions
Does Fiber Powder by Nutrilite interact with any medications?
How can one product interact with so many drugs?
Where does this information come from?
Will this help with constipation?
What are the side effects I should expect?
Is it safe to use while I'm pregnant or breastfeeding?
Can I use this if I have diabetes?
How much fiber is in one serving?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Not sure if Fiber Powder is safe with your meds?
Our pharmacists answer your medication & supplement questions — free.
Label information is sourced from the NIH Dietary Supplement Label Database and reflects the product version on file; always read your actual product label. This page is for education only and is not a substitute for professional medical advice. Confirm with your pharmacist or doctor before combining supplements and medications.
The Full Monographs Behind Fiber Powder’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Black Psyllium
Interacts with 2,025 drugsBlack psyllium is a soluble-fiber supplement made from the seeds of a Plantago plant, used mostly to ease constipation and support digestive health. It is best known and most studied for rel...
Read the full Black Psyllium monograph → Herb & supplement monographInulin
Interacts with 86 drugsInulin is a type of plant fiber (a prebiotic) found naturally in foods like chicory root, onions, and garlic, and it is widely added to supplements and processed foods. It may help with regu...
Read the full Inulin monograph →Sources & How We Checked
Fiber Powder's label data comes from the NIH Dietary Supplement Label Database; the ingredient interaction data is from the Natural Medicines database, reviewed by our pharmacists.
- NIH Dietary Supplement Label Database (DSLD) — The official product label on file for this supplement.
- Natural Medicines (Therapeutic Research Center) — Evidence-graded clinical reference behind the ingredient interaction data.
Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.
The 35 references behind this product’s interaction data
Every citation that drives the interaction findings for this product’s ingredients, from the evidence-graded Natural Medicines (TRC Healthcare) database. Open an ingredient to browse its citations — links open the study on PubMed or the publisher’s site.
Black Psyllium 18 references
- McGuffin M, Hobbs C, Upton R, Goldberg A, eds. American Herbal Products Association's Botanical Safety Handbook. Boca Raton, FL: CRC Press, LLC 1997.
- Gruenwald J, Brendler T, Jaenicke C. PDR for Herbal Medicines. 1st ed. Montvale, NJ: Medical Economics Company, Inc., 1998.
- Covington TR, et al. Handbook of Nonprescription Drugs. 11th ed. Washington, DC: American Pharmaceutical Association, 1996.
- Etman M. Effect of a bulk forming laxative on the bioavailablility of carbamazepine in man. Drug Dev Ind Pharm 1995;21:1901-6.
- Perlman BB. Interaction between lithium salts and ispaghula husk. Lancet 1990;335:416.
- Vaswani SK, Hamilton RG, Valentine MD, Adkinson NF. Psyllium laxative-induced anaphylaxis, asthma, and rhinitis. Allergy 1996;51:266-8. PubMed
- Lantner RR, Espiritu BR, Zumerchik P, Tobin MC. Anaphylaxis following ingestion of a psyllium-containing cereal. JAMA 1990;264:2534-6. DOI
- Kaplan MJ. Anaphylactic reaction to "Heartwise." N Engl J Med 1990;323:1072-3. DOI
- Nordstrom M, Melander A, Robertsson E, Steen B. Influence of wheat bran and of a bulk-forming ispaghula cathartic on the bioavailability of digoxin in geriatric in-patients. Drug Nutr Interact 1987;5:67-9..
- Robinson DS, Benjamin DM, McCormack JJ. Interaction of warfarin and nonsystemic gastrointestinal drugs. Clin Pharmacol Ther 1971;12:491-5. PubMed
- Garcia JJ, Fernandez N, Diez MJ, et al. Influence of two dietary fibers in the oral bioavailability and other pharmacokinetic parameters of ethinyloestradiol. Contraception 2000;62:253-7. PubMed
- Fernandez N, Lopez C, Díez R, et al. Drug interactions with the dietary fiber Plantago ovata husk. Expert Opin Drug Metab Toxicol 2012;8(11):1377-86.
- Semen plantaginis in: WHO Monographs on Selected Medicinal Plants, volume 1. World Health Organization, Geneva, 1999. Available at http://apps.who.int/medicinedocs/en/d/Js2200e/. Accessed November 26, 1026.
- Code of Federal Regulations, Title 21 (21CFR 101.17). Food labeling warning, notice, and safe handling statements. Available at www.ecfr.gov/cgi-bin/text-idx?SID=20f647d3b74161501f46564b915b4048&mc=true&node=se21.2.101_117&rgn=div8. Accessed December 3, 2
- Code of Federal Regulations, Title 21 (21CFR 201.319). Specific labeling requirements - water-soluble gums, hydrophilic gums, and hydrophilic mucilloids. Available at www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/CFRSearch.cfm?fr=201.319. Accessed Dece
- Diez R, Garcia JJ, Diez MJ, Sierra M, Sahagun AM, Fernandez N. Influence of Plantago ovata husk (dietary fiber) on the bioavailability and other pharmacokinetic parameters of metformin in diabetic rabbits. BMC Complement Altern Med. 2017 Jun 7;17(1):298. PubMed
- Chiu AC, Sherman SI. Effects of pharmacological fiber supplements on levothyroxine absorption. Thyroid. 1998;8(8):667-71. PubMed
- Merrick C, Madden CA, Capurso NA. A Case of Blunted Orally Disintegrating Olanzapine Effect Due to Coadministered Psyllium. J Clin Psychiatry 2021;82(2):20cr13633. PubMed
Inulin 17 references
- Williams CM. Effects of inulin on lipid parameters in humans. J Nutr 1999 Jul;129(7 Suppl):1471S-3S. PubMed
- Pedersen A, Sandstrom B, Van Amelsvoort JM. The effect of ingestion of inulin on blood lipids and gastrointestinal symptoms in healthy females. Br J Nutr 1997;78:215-22. PubMed
- Cummings JH, Macfarlane GT, Englyst HN. Prebiotic digestion and fermentation. Am J Clin Nutr 2001;73:415S-420S. PubMed
- Bonnema AL, Kolberg LW, Thomas W, Slavin JL. Gastrointestinal tolerance of chicory inulin products. J Am Diet Assoc 2010;110(6):865-8. PubMed
- Dehghan P, Gargari BP, Jafar-Abadi MA, Aliasgharzadeh A. Inulin controls inflammation and metabolic endotoxemia in women with type 2 diabetes mellitus: a randomized-controlled clinical trial. Int J Food Sci Nutr 2014;65(1):117-23. PubMed
- Guess ND, Dornhorst A, Oliver N, Frost GS. A randomised crossover trial: the effect of inulin on glucose homeostasis in subtypes of prediabetes. Ann Nutr Metab 2016;68(1):26-34. PubMed
- Marteau P, Jacobs H, Cazaubiel M, Signoret C, Prevel JM, Housez B. Effects of chicory inulin in constipated elderly people: a double-blind controlled trial. Int J Food Sci Nutr 2011;62(2):164-70. PubMed
- Mensink MA, Frijlink HW, van der Voort Maarschalk K, Hinrichs WL. Inulin, a flexible oligosaccharide I: review of its physicochemical characteristics. Carbohydr Polym 2015;130:405-19. PubMed
- Slavin J, Feirtag J. Chicory inulin does not increase stool weight or speed up intestinal transit time in healthy male subjects. Food Funct. 2011;2(1):72-7. PubMed
- Micka A, Siepelmeyer A, Holz A, Theis S, Schön C. Effect of consumption of chicory inulin on bowel function in healthy subjects with constipation: a randomized, double-blind, placebo-controlled trial. Int J Food Sci Nutr. 2017;68(1):82-89. PubMed
- Smiljanec K, Mitchell CM, Privitera OF, Neilson AP, Davy KP, Davy BM. Pre-meal inulin consumption does not affect acute energy intake in overweight and obese middle-aged and older adults: A randomized controlled crossover pilot trial. Nutr Health. 2017;23 PubMed
- Cai X, Yu H, Liu L, et al. Milk powder co-supplemented with inulin and resistant dextrin improves glycemic control and insulin resistance in elderly type 2 diabetes mellitus: a 12-week randomized, double-blind, placebo-controlled trial. Mol Nutr Food Res PubMed
- Rao M, Gao C, Xu L, et al. Effect of inulin-type carbohydrates on insulin resistance in patients with type 2 diabetes and obesity: a systematic review and meta-analysis. J Diabetes Res. 2019;2019:5101423. PubMed
- Mitchell CM, Davy BM, Ponder MA, et al. Prebiotic Inulin Supplementation and Peripheral Insulin Sensitivity in adults at Elevated Risk for Type 2 Diabetes: A Pilot Randomized Controlled Trial. Nutrients 2021;13(9):3235. PubMed
- Li L, Li P, Xu L. Assessing the effects of inulin-type fructan intake on body weight, blood glucose, and lipid profile: A systematic review and meta-analysis of randomized controlled trials. Food Sci Nutr 2021;9(8):4598-4616. PubMed
- Ziaei R, Shahshahan Z, Ghasemi-Tehrani H, Heidari Z, Ghiasvand R. Effects of inulin-type fructans with different degrees of polymerization on inflammation, oxidative stress and endothelial dysfunction in women with polycystic ovary syndrome: A randomized,
- Risso D, Kaczmarczyk M, Laurie I, et al. Moderate intakes of soluble corn fibre or inulin do not cause gastrointestinal discomfort and are well tolerated in healthy children. Int J Food Sci Nutr 2022;73(8):1104-1115. PubMed
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DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.
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