Biothin Metabolic Unflavored Ingredients & Drug Interactions
by Dr. Mercola
What is this page for?
First and foremost: checking Biothin Metabolic Unflavored 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
Biothin Metabolic Unflavored is a dietary supplement by Dr. Mercola with 4 active ingredients. Its ingredients are commonly taken for constipation, diarrhea, high cholesterol.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, Bacillus subtilis NRRL B-67989. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
Check Your Meds Against Biothin Metabolic Unflavored by Dr. Mercola
Ask about any prescription or over-the-counter medication and we check it for interactions with Biothin Metabolic Unflavored by Dr. Mercola — 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 Biothin Metabolic Unflavored by Dr. Mercola
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
Biothin Metabolic Unflavored contains three active ingredients. Bacillus subtilis is a probiotic strain — a beneficial live bacterium — added to support digestive health.
The other two actives are Sunfiber and Bifidobacterium animalis lactis, both probiotics as well. The powder also contains rice husk as an inactive ingredient.
Does it work?
Strong evidence
The evidence on these ingredients is mixed and limited. Bacillus subtilis is rated possibly effective for antibiotic-associated diarrhea — the kind that can happen when antibiotics disrupt your normal gut bacteria.
For other uses listed — athletic performance, cirrhosis, constipation, eczema, and diabetes — the evidence isn't established enough to rate it. We hold no effectiveness data for Sunfiber or Bifidobacterium animalis lactis in our monographs.
How safe is it?
Well-documented data
Bacillus subtilis is generally well tolerated in healthy adults, though quality and safety can vary by product and strain. The safety data overall is limited.
In clinical trials, one case of headache was reported, and diarrhea has been reported rarely. There are also documented cases — though uncommon — of serious infection (bacteremia and meningitis) linked to frequent consumption of a related strain in fermented soy; these occurred in people with serious underlying conditions like diabetes, kidney failure, or a weakened immune system.
Given the limited safety information, it's best to check with your doctor before use, especially if you have any chronic illness or take immunosuppressive medications.
Meds to double-check
Moderate interaction found
Check with your pharmacist before starting if you take antibiotic drugs. Since Bacillus subtilis is a live organism, antibiotics can kill it off and reduce how well it works — you'll need to time them carefully apart.
We couldn't check the other two active ingredients for interactions, so run your full medication list through the tool on this page.
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.
This product may help if you're dealing with antibiotic-related diarrhea, but the evidence for other uses is thin. If you take antibiotics regularly or have any serious health conditions or immune issues, talk to your pharmacist or doctor first.
Make sure to space out any antibiotics and this supplement by several hours.
Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI
Assessment coverage: 2 of 4 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Mar 25, 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 Biothin Metabolic Unflavored, straight from the product label.
| Brand | Dr. Mercola |
|---|---|
| Barcode (UPC) | 810094213121 |
| Net contents | 5.9 Ounce(s); 168 Gram(s); 30 On-The-Go Packet(s) |
| Market status | On market |
| Date entered into DSLD | Mar 25, 2025 |
| DSLD ID | 327149 |
| Product type | Other Combinations |
| Supplement form | Powder |
| Dietary claims / uses | Nutrient, All Other, Structure/Function |
| Intended target group(s) | Adult (18 - 50 Years), Organic, Gluten Free |
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 Biothin Metabolic Unflavored by Dr. Mercola, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| Calories | 10 Calorie(s) | -- |
| Total Carbohydrates | 5 Gram(s) | 2% |
| Total Sugars | 0 Gram(s) | -- |
| Dietary Fiber | 4 Gram(s) | 14% |
| Sunfiber | 5 Gram(s) | -- |
| Bacillus subtilis NRRL B-67989 | 50 mg | -- |
| Bifidobacterium animalis lactis CECT8145 | 34 mg | -- |
Other ingredients: Rice Husk
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
Pre + Post + Probiotics 5 Billion CFU 4 g dietary fiber per serving
Discover the ultimate in gut health with our convenient 3-in-1 powder packets that feature a unique blend of organic Sunfiber guar fiber prebiotic, Bifidobacterium animalis subsp. lactis postbiotic and Bacillus subtilis probiotic for enhanced metabolism, healthy gut microbiome and immune support.
Organic Sunfiber guar fiber prebiotic Bifidobacterium animalis subsp. lactis postbiotic Bacillus subtilis probiotic
Seals/Symbols
USDA Organic
FDA Statement of Identity
Powdered Dietary Supplement
Suggested/Recommended/Usage/Directions
Suggested use: Adults, as a dietary supplement, mix one (1) packet (5.6 g) with 8 fl. oz. of water or beverage of choice.
Simply mix this unflavored powder into at least 8 fl. oz. or more of your favorite beverage, and enjoy the endless metabolic benefits of this powerful biotic trio.
Formulation
Certified organic by: Quality Assurance International
Soy free GMO free Gluten free
3-in-1 support for metabolic health
Organic Sunfiber guar fiber prebiotic
Metabolic health Digestive support Immune support
General Statements
Providing quality products since 2001.
Precautions
Keep out of reach of children.
Do not use if packet is torn or damaged.
If you are nursing, pregnant, taking medication or have a medical condition, consult your physician before taking this product.
Brand IP Statement(s)
Sunfiber is a registered trademark of Taiyo International, Inc.
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.
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
Biothin Metabolic Unflavored by Dr. Mercola 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 Biothin Metabolic Unflavored by Dr. Mercola
These are the 4 active ingredients this product is made of. Select any to open its full monograph.
Serving size5.6 Gram(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 & interactionsSunfiber
Bacillus subtilis NRRL B-67989
Interacts with182 drugs
Bacillus subtilis is a spore-forming probiotic bacterium found in soil and some fermented foods, and it is used mainly to support gut health and diges...
Bacillus subtilis NRRL B-67989 monograph & interactionsBifidobacterium animalis lactis CECT8145
Other (inactive) ingredients: Rice Husk. These complete the product’s ingredient list but are not active constituents.
Biothin Metabolic Unflavored by Dr. Mercola Drug Interactions
HelloPharmacist Interaction Report
Biothin Metabolic Unflavored by Dr.
Mercola contains one ingredient with documented interactions: Bacillus subtilis. This probiotic preparation can interact with antibiotic drugs (a Moderate interaction).
Since B. subtilis is a live organism, taking antibiotics at the same time may kill off a significant portion of the probiotic bacteria and reduce its effectiveness. The fix is simple — separate when you take them.
Ask your pharmacist or doctor how many hours apart to space them.
Read the full breakdown — every affected drug type, severity by severity
We couldn't check two of the three active ingredients — Sunfiber and Bifidobacterium animalis lactis — because we hold no interaction data for them. That doesn't mean they're free from interactions; it means we haven't reviewed them yet.
Altogether, these interactions span 182 individual medications.
Before you start this supplement, use the medication checker below to search for your exact prescriptions, especially any antibiotics you take regularly or might take soon.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against Biothin Metabolic Unflavored?
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 Biothin Metabolic Unflavored interact with 2,083 drugs. Click any drug to see the details.
2 of the 4 ingredients in Biothin Metabolic Unflavored interact with drugs. Each result below shows which ingredient is responsible. Dietary Fiber Bacillus subtilis NRRL B-67989
Alogliptin, MetforminKazano
How Alogliptin, Metformin interacts with Biothin Metabolic Unflavored — through 1 ingredient. 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 interactionAmikacinAmikin, Arikayce
How Amikacin interacts with Biothin Metabolic Unflavored — through 2 ingredients. Tap an ingredient for the detail:
Bacillus Subtilis Nrrl B-67989Antibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bacillus subtilis with antibiotic drugs might decrease the effectiveness of B.
Read the full Bacillus Subtilis Nrrl B-67989 + Amikacin interactionDietary 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 + Amikacin interactionAmoxicillinAmix, Amoram, Amoxident, Amoxil Capsules, Amoxil Injection, Galenamox +3 more
How Amoxicillin interacts with Biothin Metabolic Unflavored — through 2 ingredients. Tap an ingredient for the detail:
Bacillus Subtilis Nrrl B-67989Antibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bacillus subtilis with antibiotic drugs might decrease the effectiveness of B.
Read the full Bacillus Subtilis Nrrl B-67989 + Amoxicillin interactionDietary 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 + Amoxicillin interactionAmoxicillin VeterinaryBiomox
How Amoxicillin Veterinary interacts with Biothin Metabolic Unflavored — through 2 ingredients. Tap an ingredient for the detail:
Bacillus Subtilis Nrrl B-67989Antibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bacillus subtilis with antibiotic drugs might decrease the effectiveness of B.
Read the full Bacillus Subtilis Nrrl B-67989 + Amoxicillin Veterinary interactionDietary 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 + Amoxicillin Veterinary interactionAmoxicillin, Clavulanate PotassiumAugmentin, Augmentin '125/31 SF', Augmentin '250/62 SF', Augmentin XR, Augmentin-Duo 400/57, Clavulin
How Amoxicillin, Clavulanate Potassium interacts with Biothin Metabolic Unflavored — through 2 ingredients. Tap an ingredient for the detail:
Bacillus Subtilis Nrrl B-67989Antibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bacillus subtilis with antibiotic drugs might decrease the effectiveness of B.
Read the full Bacillus Subtilis Nrrl B-67989 + Amoxicillin, Clavulanate Potassium interactionDietary 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 + Amoxicillin, Clavulanate Potassium interactionAmoxicillin, Omeprazole Magnesium, RifabutinTalicia
How Amoxicillin, Omeprazole Magnesium, Rifabutin interacts with Biothin Metabolic Unflavored — through 2 ingredients. Tap an ingredient for the detail:
Bacillus Subtilis Nrrl B-67989Antibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bacillus subtilis with antibiotic drugs might decrease the effectiveness of B.
Read the full Bacillus Subtilis Nrrl B-67989 + Amoxicillin, Omeprazole Magnesium, Rifabutin interactionDietary 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 + Amoxicillin, Omeprazole Magnesium, Rifabutin interactionAmphotericin, TetracyclineMysteclin-F
How Amphotericin, Tetracycline interacts with Biothin Metabolic Unflavored — through 2 ingredients. Tap an ingredient for the detail:
Bacillus Subtilis Nrrl B-67989Antibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bacillus subtilis with antibiotic drugs might decrease the effectiveness of B.
Read the full Bacillus Subtilis Nrrl B-67989 + Amphotericin, Tetracycline interactionDietary 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 + Amphotericin, Tetracycline interactionAmpicillinOmnipen, Omnipen-N, Penbritin, Principen, Rimacillin
How Ampicillin interacts with Biothin Metabolic Unflavored — through 2 ingredients. Tap an ingredient for the detail:
Bacillus Subtilis Nrrl B-67989Antibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bacillus subtilis with antibiotic drugs might decrease the effectiveness of B.
Read the full Bacillus Subtilis Nrrl B-67989 + Ampicillin interactionDietary 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 + Ampicillin interactionAmpicillin, SulbactamUnasyn
How Ampicillin, Sulbactam interacts with Biothin Metabolic Unflavored — through 1 ingredient. Tap an ingredient for the detail:
Bacillus Subtilis Nrrl B-67989Antibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bacillus subtilis with antibiotic drugs might decrease the effectiveness of B.
Read the full Bacillus Subtilis Nrrl B-67989 + Ampicillin, Sulbactam interactionAvibactam Sodium, CeftazidimeAvycaz
How Avibactam Sodium, Ceftazidime interacts with Biothin Metabolic Unflavored — through 1 ingredient. Tap an ingredient for the detail:
Bacillus Subtilis Nrrl B-67989Antibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bacillus subtilis with antibiotic drugs might decrease the effectiveness of B.
Read the full Bacillus Subtilis Nrrl B-67989 + Avibactam Sodium, Ceftazidime interactionAzithromycinAzasite, Zithromax, Zmax
How Azithromycin interacts with Biothin Metabolic Unflavored — through 2 ingredients. Tap an ingredient for the detail:
Bacillus Subtilis Nrrl B-67989Antibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bacillus subtilis with antibiotic drugs might decrease the effectiveness of B.
Read the full Bacillus Subtilis Nrrl B-67989 + Azithromycin interactionDietary 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 + Azithromycin interactionAztreonamAzactam
How Aztreonam interacts with Biothin Metabolic Unflavored — through 1 ingredient. Tap an ingredient for the detail:
Bacillus Subtilis Nrrl B-67989Antibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bacillus subtilis with antibiotic drugs might decrease the effectiveness of B.
Read the full Bacillus Subtilis Nrrl B-67989 + Aztreonam interactionBacampicillinPenglobe
How Bacampicillin interacts with Biothin Metabolic Unflavored — through 2 ingredients. Tap an ingredient for the detail:
Bacillus Subtilis Nrrl B-67989Antibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bacillus subtilis with antibiotic drugs might decrease the effectiveness of B.
Read the full Bacillus Subtilis Nrrl B-67989 + Bacampicillin interactionDietary 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 + Bacampicillin interactionBacitracinBaci-IM, Baciguent, Bacitracin Ointment
How Bacitracin interacts with Biothin Metabolic Unflavored — through 1 ingredient. Tap an ingredient for the detail:
Bacillus Subtilis Nrrl B-67989Antibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bacillus subtilis with antibiotic drugs might decrease the effectiveness of B.
Read the full Bacillus Subtilis Nrrl B-67989 + Bacitracin interactionBenznidazoleBenznidazole
How Benznidazole interacts with Biothin Metabolic Unflavored — through 2 ingredients. Tap an ingredient for the detail:
Bacillus Subtilis Nrrl B-67989Antibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bacillus subtilis with antibiotic drugs might decrease the effectiveness of B.
Read the full Bacillus Subtilis Nrrl B-67989 + Benznidazole interactionDietary 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 + Benznidazole interactionBismuth Subsalicylate, Metronidazole, TetracyclineHelidac
How Bismuth Subsalicylate, Metronidazole, Tetracycline interacts with Biothin Metabolic Unflavored — through 2 ingredients. Tap an ingredient for the detail:
Bacillus Subtilis Nrrl B-67989Antibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bacillus subtilis with antibiotic drugs might decrease the effectiveness of B.
Read the full Bacillus Subtilis Nrrl B-67989 + Bismuth Subsalicylate, Metronidazole, Tetracycline interactionDietary 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 + Bismuth Subsalicylate, Metronidazole, Tetracycline interactionCanagliflozin, MetforminInvokamet
How Canagliflozin, Metformin interacts with Biothin Metabolic Unflavored — through 1 ingredient. 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 interactionCanagliflozin, Metformin HydrochlorideInvokamet XR
How Canagliflozin, Metformin Hydrochloride interacts with Biothin Metabolic Unflavored — through 1 ingredient. 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 interactionCapreomycinCapastat
How Capreomycin interacts with Biothin Metabolic Unflavored — through 1 ingredient. Tap an ingredient for the detail:
Bacillus Subtilis Nrrl B-67989Antibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bacillus subtilis with antibiotic drugs might decrease the effectiveness of B.
Read the full Bacillus Subtilis Nrrl B-67989 + Capreomycin interactionCarbamazepineCarbatrol, Carnexiv, Equetro, Tegretol, Tegretol XR
How Carbamazepine interacts with Biothin Metabolic Unflavored — through 1 ingredient. Tap an ingredient for the detail:
Dietary FiberCarbamazepine (tegretol), Oral Drugs Moderate
Interaction Summary
Theoretically, black psyllium might reduce the effects of carbamazepine and increase the risk for convulsions.
Read the full Dietary Fiber + Carbamazepine interactionCarbenicillin Indanyl SodiumGeocillin
How Carbenicillin Indanyl Sodium interacts with Biothin Metabolic Unflavored — through 2 ingredients. Tap an ingredient for the detail:
Bacillus Subtilis Nrrl B-67989Antibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bacillus subtilis with antibiotic drugs might decrease the effectiveness of B.
Read the full Bacillus Subtilis Nrrl B-67989 + Carbenicillin Indanyl Sodium interactionDietary 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 + Carbenicillin Indanyl Sodium interactionCefaclorCeclor, Ceclor CD
How Cefaclor interacts with Biothin Metabolic Unflavored — through 2 ingredients. Tap an ingredient for the detail:
Bacillus Subtilis Nrrl B-67989Antibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bacillus subtilis with antibiotic drugs might decrease the effectiveness of B.
Read the full Bacillus Subtilis Nrrl B-67989 + Cefaclor interactionDietary 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 + Cefaclor interactionCefadroxilCef-Tab, Duricef, Ultracef
How Cefadroxil interacts with Biothin Metabolic Unflavored — through 2 ingredients. Tap an ingredient for the detail:
Bacillus Subtilis Nrrl B-67989Antibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bacillus subtilis with antibiotic drugs might decrease the effectiveness of B.
Read the full Bacillus Subtilis Nrrl B-67989 + Cefadroxil interactionDietary 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 + Cefadroxil interactionCefamandoleMandol
How Cefamandole interacts with Biothin Metabolic Unflavored — through 1 ingredient. Tap an ingredient for the detail:
Bacillus Subtilis Nrrl B-67989Antibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bacillus subtilis with antibiotic drugs might decrease the effectiveness of B.
Read the full Bacillus Subtilis Nrrl B-67989 + Cefamandole interactionCefazolinAncef
How Cefazolin interacts with Biothin Metabolic Unflavored — through 1 ingredient. Tap an ingredient for the detail:
Bacillus Subtilis Nrrl B-67989Antibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bacillus subtilis with antibiotic drugs might decrease the effectiveness of B.
Read the full Bacillus Subtilis Nrrl B-67989 + Cefazolin interactionCefdinirOmnicef
How Cefdinir interacts with Biothin Metabolic Unflavored — through 2 ingredients. Tap an ingredient for the detail:
Bacillus Subtilis Nrrl B-67989Antibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bacillus subtilis with antibiotic drugs might decrease the effectiveness of B.
Read the full Bacillus Subtilis Nrrl B-67989 + Cefdinir interactionDietary 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 + Cefdinir interactionCefditoren PivoxilSpectracef
How Cefditoren Pivoxil interacts with Biothin Metabolic Unflavored — through 2 ingredients. Tap an ingredient for the detail:
Bacillus Subtilis Nrrl B-67989Antibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bacillus subtilis with antibiotic drugs might decrease the effectiveness of B.
Read the full Bacillus Subtilis Nrrl B-67989 + Cefditoren Pivoxil interactionDietary 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 + Cefditoren Pivoxil interactionCefepimeMaxipime
How Cefepime interacts with Biothin Metabolic Unflavored — through 1 ingredient. Tap an ingredient for the detail:
Bacillus Subtilis Nrrl B-67989Antibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bacillus subtilis with antibiotic drugs might decrease the effectiveness of B.
Read the full Bacillus Subtilis Nrrl B-67989 + Cefepime interactionCefiderocol Sulfate TosylateFetroja
How Cefiderocol Sulfate Tosylate interacts with Biothin Metabolic Unflavored — through 1 ingredient. Tap an ingredient for the detail:
Bacillus Subtilis Nrrl B-67989Antibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bacillus subtilis with antibiotic drugs might decrease the effectiveness of B.
Read the full Bacillus Subtilis Nrrl B-67989 + Cefiderocol Sulfate Tosylate interactionCefiximeSuprax
How Cefixime interacts with Biothin Metabolic Unflavored — through 2 ingredients. Tap an ingredient for the detail:
Bacillus Subtilis Nrrl B-67989Antibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bacillus subtilis with antibiotic drugs might decrease the effectiveness of B.
Read the full Bacillus Subtilis Nrrl B-67989 + Cefixime interactionDietary 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 + Cefixime interactionEach ingredient & the kinds of drugs it affects
For each ingredient in Biothin Metabolic Unflavored 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.
Bacillus subtilis NRRL B-67989
Antibiotic Drugs
Theoretically, taking Bacillus subtilis with antibiotic drugs might decrease the effectiveness of B. subtilis.
Since B. subtilis preparations usually contain live and active organisms, simultaneously taking antibiotics might kill a significant number of the organisms. Tell patients to separate administration of antibiotics and B. subtilis preparations by at least 2 hours.
Brand information
Manufacturer and brand details for Biothin Metabolic Unflavored, from the product label.
Dr. Mercola
See all Dr. Mercola products- Name
- NHP
- Street Address
- 125 SW 3rd Place
- City
- Cape Coral
- State
- FL
- ZipCode
- 33991
- Phone Number
- (877) 985-2696
Biothin Metabolic Unflavored by Dr. Mercola: Common Questions
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Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
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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 Biothin Metabolic Unflavored’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 monographBacillus Subtilis
Interacts with 182 drugsBacillus subtilis is a spore-forming probiotic bacterium found in soil and some fermented foods, and it is used mainly to support gut health and digestion. Early research is promising for ce...
Read the full Bacillus Subtilis monograph →Sources & How We Checked
Biothin Metabolic Unflavored'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 28 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
Bacillus Subtilis 10 references
- Pierce A. The American Pharmaceutical Association Practical Guide to Natural Medicines. New York: The Stonesong Press, 1999:19.
- Lampropoulos PK, Gkentzi D, Tzifas S, Dimitriou G. Neonatal sepsis due to Bacillus subtilis. Cureus 2021;13(9):e17692. PubMed
- La Jeon Y, Yang JJ, Kim MJ, et al. Combined Bacillus licheniformis and Bacillus subtilis infection in a patient with oesophageal perforation. J Med Microbiol 2012;61(Pt 12):1766-1769. PubMed
- Wallet F, Crunelle V, Roussel-Delvallez M, Fruchart A, Saunier P, Courcol RJ. Bacillus subtilis as a cause of cholangitis in polycystic kidney and liver disease. Am J Gastroenterol 1996;91(7):1477-8.
- Velasco E, Martins CA, Tabak D, Bouzas LF. "Bacillus subtilis" infection in a patient submitted to a bone marrow transplantation. Rev Paul Med 1992;110(3):116-7.
- Kato A, Yoshifuji A, Komori K, et al. A case of Bacillus subtilis var. natto bacteremia caused by ingestion of natto during COVID-19 treatment in a maintenance hemodialysis patient with multiple myeloma. J Infect Chemother 2022;28(8):1212-1215. PubMed
- Freedman KE, Hill JL, Wei Y, et al. Examining the gastrointestinal and immunomodulatory effects of the novel probiotic Bacillus subtilis DE111. Int J Mol Sci 2021;22(5):2453. PubMed
- Lefevre M, Racedo SM, Denayrolles M, et al. Safety assessment of Bacillus subtilis CU1 for use as a probiotic in humans. Regul Toxicol Pharmacol 2017;83:54-65. PubMed
- Hanifi A, Culpepper T, Mai V, et al. Evaluation of Bacillus subtilis R0179 on gastrointestinal viability and general wellness: a randomised, double-blind, placebo-controlled trial in healthy adults. Benef Microbes 2015;6(1):19-27. PubMed
- Tokano M, Tarumoto N, Imai K, et al. A case of bacterial meningitis caused by Bacillus subtilis var. natto. Intern Med. 2022. Epub ahead of print.
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