Interactions on record — worth a quick check against your medications. Based on 2 of 6 ingredients. Check your meds →
Dietary supplement

Fibermucil Ingredients & Drug Interactions

by ProCaps Laboratories

Capsule Category: Other Combinations
Most serious interaction: Moderate
The interaction bottom line Most serious interaction: Moderate

Fibermucil is a dietary supplement by ProCaps Laboratories with 6 active ingredients. Its ingredients are commonly taken for constipation, irritable bowel syndrome (ibs), diarrhea.Based on those ingredients, 2,083 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Dietary Fiber, Lactobacillus sporogenes. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

HelloPharmacist Scorecard of Fibermucil by ProCaps Laboratories

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.

From our pharmacy team — supplement deep dive

What’s inside

Full disclosure
Ingredient Transparency · database check
Full

Every active ingredient lists its own amount on the label.

Why this rating?
  • The label discloses an exact amount for 5 of its 5 active ingredients.
  • No proprietary blends here — you can verify the dose of every single component.

Fibermucil contains four active ingredients. Insoluble fiber and soluble fiber are types of dietary fiber that help with digestion and stool bulk.

Psyllium is a soluble fiber used similarly for digestive health. Lactobacillus sporogenes is a probiotic (beneficial bacteria) intended to support gut health.

The capsule itself is made from gelatin.

Does it work?

Strong evidence
Evidence for Intended Use · database check
By FDA rules, dietary supplements can’t claim to treat, cure, or prevent disease — so labels speak in careful marketing language. We discern each product’s intended use from its name, label claims, and label statements, then grade the clinical evidence for that use. How these ratings are computed
Strong

Clinical evidence supports at least one of this product's ingredients for its stated purpose.

Why this rating?
  • The label markets this product for: digestive health and bowel regularity.
  • We looked for evidence on: Constipation, Diarrhea, Irritable bowel syndrome (IBS), Flatulence, Dyspepsia, Bowel function — and 2 related terms.
  • The strongest evidence on file: Black Psyllium is rated "Effective" for Constipation (Natural Medicines).
  • Also on file: Bacillus Coagulans is rated "Possibly Effective" for Constipation, Irritable bowel syndrome (IBS).
  • Also on file: Black Psyllium is rated "Insufficient Reliable Evidence To Rate" for Diarrhea.

Lactobacillus sporogenes is rated possibly effective for constipation and irritable bowel syndrome (IBS). For antibiotic-associated diarrhea, cancer, nonalcoholic fatty liver disease, and athletic performance, the evidence is too thin to rate it either way — we don't have solid data on whether it works for those uses.

The evidence, ingredient by ingredient Bacillus Coagulans Black Psyllium

How safe is it?

Well-documented data
Safety Information · database check
Well characterized

Adverse-effect, pregnancy, and general safety data are on file for most of these ingredients.

Why this rating?
  • We hold adverse-effect (side-effect) data for 2 of the 2 matched ingredients.
  • Pregnancy & breastfeeding safety ratings cover 2 of 2.
  • General safety write-ups exist for 2 of 2.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Lactobacillus sporogenes is generally well tolerated in healthy adults, though product quality and safety data vary. The evidence isn't robust enough, so talk to your doctor or pharmacist before starting it.

One concern: since probiotic products contain live organisms, there's a theoretical risk they could cause infection in people who are very ill, immunocompromised, or have central venous catheters. Healthy people with normal immune systems are at much lower risk.

The pregnancy and lactation safety data for this ingredient isn't established in our information — ask your doctor or pharmacist for personalized guidance.

Side effects, ingredient by ingredient Bacillus Coagulans Black Psyllium

Meds to double-check

Moderate interaction found
Known Interaction Concern · database check
Moderate identified

The most serious documented interaction for these ingredients is Moderate. Check your medications for a personalized result.

Why this rating?
  • 2 of the 2 matched ingredients can interact with medications — Black Psyllium, Bacillus Coagulans.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: heart-rhythm medications; lithium.
  • For scale: 2,084 individual medications appear in the full list. A big number alone doesn't make a product dangerous — what matters is whether YOUR medication is on it, so run yours through the interaction checker on this page.

If you take antibiotics, tell your pharmacist — Lactobacillus sporogenes may lose effectiveness if you dose them together. No other medication interactions are documented for the ingredients we could check.

Check your own medication Run your meds through the checker above

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.

Fibermucil might help with constipation or IBS symptoms if you're generally healthy and don't have a compromised immune system. If you take antibiotics, space them out from this product.

Check your medications with the tool on this page, and talk to your pharmacist if you're on a lot of drugs or have any health concerns.

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 Jan 24, 2014.

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

At a glance

General information

Key facts about Fibermucil, straight from the product label.

Brand ProCaps Laboratories
Net contents 500 Easy To Swallow Capsule(s)
Market status On market
Date entered into DSLD Jan 24, 2014
DSLD ID 29482
Product type Other Combinations
Supplement form Capsule
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years), No Allergies, Gluten Free, Dairy Free, Sugar Free
From the label
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 Fibermucil by ProCaps Laboratories, sourced from the NIH Dietary Supplement Label Database.

Supplement Facts

Daily Value (DV) Target Group(s):
Adults and children 4 or more years of age
Minimum serving Sizes:
3 Capsule(s)
Maximum serving Sizes:
3 Capsule(s)
Servings per container
166
IngredientAmount% DV
Calories5 {Calories}--
Total Carbohydrates2 Gram(s)1%
Sugar0 Gram(s)--
Insoluble Fiber200 mg--
Psyllium2 Gram(s)--
Lactobacillus sporogenes20000000 Organism(s)--
Dietary Fiber1.5 Gram(s)8%
Soluble Fiber1.5 Gram(s)--

Other ingredients: Gelatin Capsule

Tap any ingredient to jump to its full detail below.

Label statements
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.
FDA Disclaimer Statement

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.

Formulation

CONTAINS NO Milk, soy, yeast, wheat, gluten, sodium, salt, sugar, fat, cholesterol, color, preservative, common allergens or manufacturing additive. CONTAINS NO ADDITIVES OF ANY KIND.

Suggested/Recommended/Usage/Directions

SUGGESTED USE Consume one or more capsules with each meal or as recommended by a health care professional. When introducing fiber into your diet, it is best to begin gradually with just one or two capsules with each meal. For best results, always consume with 8 ounces of water and divide your daily intake with meals throughout the day.

General Statements

This product is most effective as part of a healthy diet and active lifestyle, along with one of Andrew Lessman’s multi-vitamin-mineral formulas. For answers to questions about the use of this product call 800.800.1200.

Unsurpassed. Purity. Quality. Integrity. Effectiveness. Andrew Lessman Founder of ProCaps Labs

NATURALLY GENTLE PURE PSYLLIUM FIBER

Natural Psyllium Fiber in Small Capsules

Andrew Lessman’s Fibermucil is all-natural 100% pure encapsulated Psyllium Husk powder from the high-fiber Indian plant Plantago Ovata. It contains no additives of any kind and provides an unparalleled natural source of both water-soluble fiber and bulk fiber. It comes in small easy-to-swallow capsules, and there are no colors or flavors, unlike most fiber beverages. Dietary fiber provides a myriad of health benefits and is generally considered the most overlooked component in the American diet. In fact, the unique properties of the soluble fiber in this product can help to maintain and support healthy blood cholesterol levels already in the normal range. It is well established in the scientific literature that daily consumption of healthy soluble fiber, such as that found in Fibermucil, is one of the easiest methods of supporting heart health. Plus, the insoluble (bulk) fiber in this natural product helps to “scour” the digestive tract removing undigested food, debris and other by-products. Fiber also speeds gastrointestinal (GI) transit time (the time it takes for food to pass through you) and as a result can help remove digestive by-products sooner and most importantly, naturally helps to support the “regularity” we all seek. Scientific studies consistently demonstrate the long-term health benefits of a high-fiber diet and it is well established that adequate fiber intake is vital for maintaining the optimal functioning of the digestive system. Moreover, when taken with meals, fiber can also provide a natural feeling of fullness to support most weight-loss plans. Fibermucil also includes Lactobacillus sporogenes to help maintain a balance of beneficial flora in your intestines, which supports nutrient absorption and the overall health of the GI tract. Andrew Lessman’s Fibermucil provides a convenient and easy-to-swallow source of the vital fiber which is so lacking from our diet, yet so essential for our good health and regularity.

Precautions

NOTICE All fiber products should be taken with a full glass of liquid. Consuming any fiber product without adequate fluid may cause choking. Do not use this or any fiber product if you have difficulty swallowing. If you feel abdominal pain or unexpected gastrointestinal discomfort when using this product, discontinue use and consult a physician. Initially, when using this product, evacuations may not occur until the second day, hence you may experience a temporary feeling of fullness.

As with any grain product, inhaled or ingested Psyllium Husk may cause allergic reactions in some individuals.

If you are taking prescription medicine by mouth, take this product 2 hours before or 2 hours after the prescribed medicine.

Seals/Symbols

All-Solar MANUFACTURING

Brand IP Statement(s)

(C)2013 ProCaps Laboratories

General

601187 - 04P

Formula

Rich in Water-Soluble and Bulk Fiber plus Lactobacillus Friendly Flora

FDA Statement of Identity

DIETARY SUPPLEMENT

See for yourself

Fibermucil by ProCaps Laboratories label

The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.

What’s inside

The Ingredients in Fibermucil by ProCaps Laboratories

These are the 6 active ingredients this product is made of. Select any to open its full monograph.

Serving size3 Capsule(s) Dosage formCapsule Servings per container166 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.

Sugar

0 Gram(s) per serving

Insoluble Fiber

200 mg per serving

Psyllium

2 Gram(s) per serving

Lactobacillus sporogenes

Interacts with
182 drugs
20000000 Organism(s) per serving

Bacillus coagulans is a spore-forming probiotic that survives stomach acid well and may help with some digestive problems such as IBS, constipation, a...

Lactobacillus sporogenes monograph & interactions

Dietary Fiber

Interacts with
2,025 drugs
1.5 Gram(s) per serving

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 & interactions

Soluble Fiber

1.5 Gram(s) per serving

Other (inactive) ingredients: Gelatin Capsule. These complete the product’s ingredient list but are not active constituents.

Interaction report

Fibermucil by ProCaps Laboratories Drug Interactions

Want to check YOUR meds against Fibermucil?

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 checker
2,083Drugs
205 Moderate 1,878 Minor

Ingredients driving the most interactions

Each ingredient & the kinds of drugs it affects

For each ingredient in Fibermucil 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 Fiber7 drug types · 2,025 drugs

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.

Likelihood Probable Evidence D
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.

Likelihood Probable Evidence D
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.

Likelihood Possible Evidence D
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.

Likelihood Possible Evidence D
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.

Likelihood Unlikely Evidence B
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.

Likelihood Unlikely Evidence D
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.

Likelihood Possible Evidence B

Lactobacillus sporogenes1 drug type · 182 drugs

Antibiotic Drugs

Theoretically, taking antibiotics with Bacillus coagulans might decrease the effectiveness of B. coagulans.
B. coagulans preparations usually contain live and active organisms. Therefore, simultaneously taking antibiotics might kill a significant number of the organisms. Tell patients to separate administration of antibiotics and B. coagulans preparations by at least two hours.

Likelihood Probable Evidence D
The maker

Brand information

Manufacturer and brand details for Fibermucil, from the product label.

ProCaps Laboratories

See all ProCaps Laboratories products
Name
ProCaps Laboratories
Street Address
430 Parkson Road
City
Henderson
State
NV
ZipCode
89011
Pharmacist Counseling Corner

Fibermucil by ProCaps Laboratories: Common Questions

Does Fibermucil by ProCaps Laboratories interact with any medications?
Yes. Based on its ingredients, Fibermucil has a known interaction with 2,083 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Fibermucil contains 6 active ingredients, and an interaction can come from any of them. We check every ingredient, combine the results into one list per medication, and show which ingredient and mechanism is responsible.
Where does this information come from?
The product label data comes from the NIH Dietary Supplement Label Database (DSLD); the interaction data is built on the Natural Medicines database and reviewed by HelloPharmacist pharmacists.
Will Fibermucil help my constipation?
The probiotic in Fibermucil is rated possibly effective for constipation, so there's some evidence it may help. The fiber ingredients (psyllium, insoluble and soluble fiber) are classic constipation treatments too, but we don't have a formal effectiveness rating on file for them in this product. Your results may vary, and if it's not working after a couple of weeks, check with your doctor.
Can I take this if I'm on an antibiotic?
You can take both, but space them out. Since the antibiotic can kill the live probiotic organisms in Fibermucil, separate the two by a few hours — your pharmacist can help you figure out the best timing. After you finish the antibiotic, you can go back to taking them together.
Is Fibermucil safe if I have a weakened immune system?
If you're severely ill, immunocompromised, or have a central venous catheter, talk to your doctor first. Probiotic products can theoretically cause infection in those situations. Healthy people with normal immune systems don't usually have this concern, but it's worth checking with your doctor.
What's in this product?
Fibermucil has four active ingredients: two types of fiber (psyllium and insoluble fiber), one soluble fiber, and a probiotic called Lactobacillus sporogenes. The capsule is made of gelatin.
Can I take this while pregnant or breastfeeding?
We don't have enough safety data to say whether it's safe during pregnancy or breastfeeding. Talk to your doctor or pharmacist — they can review your health and help you decide whether it's right for you.

Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy

Not sure if Fibermucil is safe with your meds?

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Ask a pharmacist

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.

Fibermucil label
Sources

Sources & How We Checked

Fibermucil'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.

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 38 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.

Bacillus Coagulans 20 references
  1. Saxelin M, Chuang NH, Chassy B, et al. Lactobacilli and bacteremia in southern Finland 1989-1992. Clin Infect Dis 1996;22:564-6. PubMed
  2. Tynkkynen S, Singh KV, Varmanen P. Vancomycin resistance factor of Lactobacillus rhamnosus GG in relation to enterococcal vancomycin resistance (van) genes. Int J Food Microbiol 1998;41:195-204. PubMed
  3. Klein G, Zill E, Schindler R, et al. Peritonitis associated with vancomycin-resistant Lactobacillus rhamnosus in a continuous ambulatory peritoneal dialysis patient; organism identification, antibiotic therapy, and case report. J Clin Microbiol 1998;36:
  4. Kalima P, Masterton RG, Roddie PH, et al. Lactobacillus rhamnosus infection in a child following bone marrow transplant. J Infect 1996;32:165-7. PubMed
  5. Goldin BR. Health Benefits of probiotics. Br J Nutr 1998;80:S203-7. DOI
  6. Rautio M, Jousimies-Somer H, Kauma H, et al. Liver abscess due to Lactobacillus rhamnosus strain indistinguishable from L. rhamnosus strain GG. Clin Infect Dis 1999;28:1159-60.
  7. MacGregor G, Smith AJ, Thakker B, Kinsella J. Yoghurt biotherapy: contraindicated in immunosuppressed patients? Postgrad Med J 2002;78:366-7. PubMed
  8. Land MH, Rouster-Stevens K, Woods CR, et al. Lactobacillus sepsis associated with probiotic therapy. Pediatrics 2005;115:178-81.
  9. De Groote MA, Frank DN, Dowell E, et al. Lactobacillus rhamnosus GG bacteremia associated with probiotic use in a child with short gut syndrome. Pediatr Infect Dis J 2005;24:278-80. PubMed
  10. Vahabnezhad E, Mochon AB, Wozniak LJ, Ziring DA. Lactobacillus bacteremia associated with probiotic use in a pediatric patient with ulcerative colitis. J Clin Gastroenterol. 2013;47(5):437-9. PubMed
  11. Pruccoli G, Silvestro E, Pace Napoleone C, Aidala E, Garazzino S, Scolfaro C. Are probiotics safe? Bifidobacterium bacteremia in a child with severe heart failure. Infez Med. 2019;27(2):175-178.
  12. Sendil S, Shrimanker I, Mansoora Q, Goldman J, Nookala VK. Lactobacillus rhamnosus bacteremia in an immunocompromised renal transplant patient. Cureus. 2020;12(2):e6887. PubMed
  13. Albarillo FS, Shah U, Joyce C, Slade D. Lactobacillus rhamnosus Infection: A single-center 4-year descriptive analysis. J Glob Infect Dis. 2020;12(3):119-123. PubMed
  14. Pasala S, Singer L, Arshad T, Roach K. Lactobacillus endocarditis in a healthy patient with probiotic use. IDCases. 2020;22:e00915. PubMed
  15. Agrawal S, Tuchman ES, Bruce MJ, Theodorou ME. Fatal Lactobacillus endocarditis in a patient with transcatheter aortic valve replacement. BMJ Case Rep. 2020;13(11):e236835.
  16. Antoun M, Hattab Y, Akhrass FA, Hamilton LD. Uncommon pathogen, Lactobacillus, causing infective endocarditis: Case report and review. Case Rep Infect Dis. 2020;2020:8833948. PubMed
  17. Rossi F, Amadoro C, Gasperi M, Colavita G. Lactobacilli infection case reports in the last three years and safety implications. Nutrients. 2022;14(6):1178. PubMed
  18. Franko B, Vaillant M, Recule C, Vautrin E, et al. Lactobacillus paracasei endocarditis in a consumer of probiotics. Med Mal Infect. 2013;43(4):171-3. PubMed
  19. Campbell RE, Miller A, Afroze A. Native valve endocarditis secondary to Lactobacillus paracasei bacteremia. Consultant. 2020;60(9):27-8. DOI
  20. Kato K, Funabashi N, Takaoka H, et al. Lactobacillus paracasei endocarditis in a consumer of probiotics with advanced and severe bicuspid aortic valve stenosis complicated with diffuse left ventricular mid-layer fibrosis. Int J Cardiol. 2016;224:157-161. PubMed

See these in context on the Bacillus Coagulans monograph →

Black Psyllium 18 references
  1. McGuffin M, Hobbs C, Upton R, Goldberg A, eds. American Herbal Products Association's Botanical Safety Handbook. Boca Raton, FL: CRC Press, LLC 1997.
  2. Gruenwald J, Brendler T, Jaenicke C. PDR for Herbal Medicines. 1st ed. Montvale, NJ: Medical Economics Company, Inc., 1998.
  3. Covington TR, et al. Handbook of Nonprescription Drugs. 11th ed. Washington, DC: American Pharmaceutical Association, 1996.
  4. Etman M. Effect of a bulk forming laxative on the bioavailablility of carbamazepine in man. Drug Dev Ind Pharm 1995;21:1901-6.
  5. Perlman BB. Interaction between lithium salts and ispaghula husk. Lancet 1990;335:416.
  6. Vaswani SK, Hamilton RG, Valentine MD, Adkinson NF. Psyllium laxative-induced anaphylaxis, asthma, and rhinitis. Allergy 1996;51:266-8. PubMed
  7. Lantner RR, Espiritu BR, Zumerchik P, Tobin MC. Anaphylaxis following ingestion of a psyllium-containing cereal. JAMA 1990;264:2534-6. DOI
  8. Kaplan MJ. Anaphylactic reaction to "Heartwise." N Engl J Med 1990;323:1072-3. DOI
  9. 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..
  10. Robinson DS, Benjamin DM, McCormack JJ. Interaction of warfarin and nonsystemic gastrointestinal drugs. Clin Pharmacol Ther 1971;12:491-5. PubMed
  11. 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
  12. 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.
  13. 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.
  14. 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
  15. 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
  16. 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
  17. Chiu AC, Sherman SI. Effects of pharmacological fiber supplements on levothyroxine absorption. Thyroid. 1998;8(8):667-71. PubMed
  18. 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

See these in context on the Black Psyllium monograph →

Parts of this content are provided by the Therapeutic Research Center, LLC.

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.

© 2021 Therapeutic Research Center, LLC

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