Cal'dophilus With FOS Ingredients & Drug Interactions
What is this page for?
First and foremost: checking Cal'dophilus With FOS 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
Cal'dophilus With FOS is a dietary supplement by Natural Factors with 5 active ingredients. Its ingredients are commonly taken for digestive health and regularity, irritable bowel syndrome (ibs), diarrhea (including antibiotic-related).Based on those ingredients, 182 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Bifidobacterium longum, Lactobacillus acidophilus. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
Check Your Meds Against Cal'dophilus With FOS by Natural Factors
Ask about any prescription or over-the-counter medication and we check it for interactions with Cal'dophilus With FOS by Natural Factors — 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 Cal'dophilus With FOS by Natural Factors
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
Cal'dophilus With FOS is a 5-ingredient probiotic blend. The active ingredients are two Lactobacillus species (acidophilus and casei), two Bifidobacterium species (longum and rhamnosus), and FOS (a prebiotic fiber that feeds beneficial bacteria).
These live microorganisms are intended to support digestive and intestinal health. The product also contains inactive ingredients—maltodextrin, calcium gluconate, gelatin capsule, pectin, magnesium stearate, and ascorbic acid—which are fillers and capsule materials.
Does it work?
Moderate evidence
The evidence for these ingredients is mixed. Lactobacillus acidophilus is rated Possibly Effective for irritable bowel syndrome, Helicobacter pylori infection, antibiotic-associated diarrhea, and bacterial vaginosis.
Bifidobacterium longum, however, shows Insufficient Reliable Evidence for the conditions we've rated it on—including antibiotic-associated diarrhea, age-related cognitive decline, allergic rhinitis, and asthma. We hold no effectiveness data for Lactobacillus casei, Lactobacillus rhamnosus, or FOS in our files.
How safe is it?
Well-documented data
Both Bifidobacterium longum and Lactobacillus acidophilus are generally well tolerated in healthy people. However, caution is advised if you're seriously ill or have a weakened immune system—in rare cases, these bacteria have caused infection (bacteremia or sepsis) in critically ill infants and immune-compromised patients.
Orally, uncommon gastrointestinal side effects include abdominal discomfort, flatulence, bloating, and constipation. One person reported a dry cough.
For pregnancy and breastfeeding, Bifidobacterium longum is rated Possibly Safe, but we hold no safety data for Lactobacillus acidophilus during those periods, so ask your doctor or pharmacist for guidance.
Meds to double-check
Moderate interaction found
If you're on an antibiotic, separate it from this product—antibiotics can kill the live probiotics and reduce their effectiveness. Check your exact medications with the tool on this page, since the interactions span 182 individual drugs.
The bottom line
Scorecard at a glanceFully disclosed formula with some supporting evidence for its stated purpose. Moderate medication interactions have been identified, and safety information is well characterized.
This probiotic blend may help if you have irritable bowel syndrome, antibiotic-associated diarrhea, or certain bacterial infections—though evidence varies. If you're taking antibiotics, time this product separately to protect the live organisms.
Be cautious if you're seriously ill or immune-compromised, and talk with your pharmacist before using it during pregnancy or breastfeeding.
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 Jun 1, 2012.
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 Cal'dophilus With FOS, straight from the product label.
| Brand | Natural Factors |
|---|---|
| Barcode (UPC) | 068958018218 |
| Net contents | 90 Capsule(s) |
| Market status | On market |
| Date entered into DSLD | Jun 1, 2012 |
| DSLD ID | 8454 |
| Product type | Non-nutrient/non-botanical |
| Supplement form | Capsule |
| Dietary claims / uses | All Other, Structure/Function |
| Intended target group(s) | Adult (18 - 50 Years) |
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 Cal'dophilus With FOS by Natural Factors, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| Bifidobacterium longum | 600000000 {microorganisms} | -- |
| Lactobacillus acidophilus | 600000000 {microorganisms} | -- |
| Lactobacillus casei | 1800000000 {microorganisms} | -- |
| Lactobacillus rhamnosus | 3000000000 {microorganisms} | -- |
| FOS | 200 mg | -- |
| Total Active Cell count | 6000000000 {microorganisms} | -- |
Other ingredients: Maltodextrin, Calcium Gluconate, Gelatin Capsule, Pectin, Magnesium Stearate, Ascorbic Acid
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.
Suggested/Recommended/Usage/Directions
Suggested Usage: To maintain healthful intestinal flora, take 1 capsule, 1-3 times per day, 15 minutes before meals or 1 hour after. When taking antibiotics, take probiotic 2 hours before or 2 hours after antibiotic.
Storage
FOR MAXIMUM POTENCY, REFRIGERATE
FDA Statement of Identity
DIETARY SUPPLEMENT
General Statements
PROBIOTIC FORMULA
Promotes well-being & digestive health with beneficial micro-flora
This synergistic combination supports intestinal tract health and contains FOS, an excellent growth factor for beneficial micro-flora. These cultures are freeze-dried to ensure long-term stability and maximum potency. All Natural Factors products are manufactured in accordance with the Government of Canada's Good Manufacturing Practices (GMP), among the highest standards in the world.
Colony counts are guaranteed at time of manufacture.
PRODUCT OF CANADA
Formula
6 BILLION ACTIVE CELLS
Contains dairy, soy.
Formulation
Contains no artificial preservatives, color or sweeteners; no wheat.
Precautions
Sealed for your protection. Do not use if seal is broken.
Keep out of reach of children.
General
R4
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.
Seals/Symbols
(recycle) Recyclable container.
Purity & Potency Guaranteed
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
Cal'dophilus With FOS by Natural Factors 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 Cal'dophilus With FOS by Natural Factors
These are the 5 active ingredients this product is made of. Select any to open its full monograph.
Serving size1 Capsule(s) Dosage formCapsule 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.
FOS
Total Active Cell count
- › Bifidobacterium longum
- › Lactobacillus acidophilus
- › Lactobacillus casei
- › Lactobacillus rhamnosus
Other (inactive) ingredients: Maltodextrin, Calcium Gluconate, Gelatin Capsule, Pectin, Magnesium Stearate, Ascorbic Acid. These complete the product’s ingredient list but are not active constituents.
Cal'dophilus With FOS by Natural Factors Drug Interactions
HelloPharmacist Interaction Report
Cal'dophilus With FOS by Natural Factors contains two probiotic ingredients we've checked for interactions: Bifidobacterium longum and Lactobacillus acidophilus.
Both have a documented Moderate interaction with antibiotic drugs. Because these probiotics are live organisms, antibiotics can kill a significant portion of them and reduce their effectiveness.
If you're taking an antibiotic, separate the timing—don't take them at the same time.
Read the full breakdown — every affected drug type, severity by severity
Lactobacillus casei, Lactobacillus rhamnosus, and FOS are also in this product, but we hold no interaction data for them, so we couldn't check them against medications.
Altogether, these interactions span 182 individual medications. Use the search tool below to check your exact prescriptions before starting this supplement.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against Cal'dophilus With FOS?
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 Cal'dophilus With FOS interact with 182 drugs. Click any drug to see the details.
2 of the 5 ingredients in Cal'dophilus With FOS interact with drugs. Each result below shows which ingredient is responsible. Bifidobacterium longum Lactobacillus acidophilus
AmikacinAmikin, Arikayce
How Amikacin interacts with Cal'dophilus With FOS — through 2 ingredients. Tap an ingredient for the detail:
Bifidobacterium LongumAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bifidobacterium longum with antibiotic drugs might decrease the effectiveness of B.
Read the full Bifidobacterium Longum + Amikacin interactionLactobacillus AcidophilusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus acidophilus with antibiotic drugs might decrease the effectiveness of L.
Read the full Lactobacillus Acidophilus + Amikacin interactionAmoxicillinAmix, Amoram, Amoxident, Amoxil Capsules, Amoxil Injection, Galenamox +3 more
How Amoxicillin interacts with Cal'dophilus With FOS — through 2 ingredients. Tap an ingredient for the detail:
Lactobacillus AcidophilusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus acidophilus with antibiotic drugs might decrease the effectiveness of L.
Read the full Lactobacillus Acidophilus + Amoxicillin interactionBifidobacterium LongumAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bifidobacterium longum with antibiotic drugs might decrease the effectiveness of B.
Read the full Bifidobacterium Longum + Amoxicillin interactionAmoxicillin VeterinaryBiomox
How Amoxicillin Veterinary interacts with Cal'dophilus With FOS — through 2 ingredients. Tap an ingredient for the detail:
Lactobacillus AcidophilusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus acidophilus with antibiotic drugs might decrease the effectiveness of L.
Read the full Lactobacillus Acidophilus + Amoxicillin Veterinary interactionBifidobacterium LongumAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bifidobacterium longum with antibiotic drugs might decrease the effectiveness of B.
Read the full Bifidobacterium Longum + 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 Cal'dophilus With FOS — through 2 ingredients. Tap an ingredient for the detail:
Lactobacillus AcidophilusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus acidophilus with antibiotic drugs might decrease the effectiveness of L.
Read the full Lactobacillus Acidophilus + Amoxicillin, Clavulanate Potassium interactionBifidobacterium LongumAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bifidobacterium longum with antibiotic drugs might decrease the effectiveness of B.
Read the full Bifidobacterium Longum + Amoxicillin, Clavulanate Potassium interactionAmoxicillin, Omeprazole Magnesium, RifabutinTalicia
How Amoxicillin, Omeprazole Magnesium, Rifabutin interacts with Cal'dophilus With FOS — through 2 ingredients. Tap an ingredient for the detail:
Lactobacillus AcidophilusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus acidophilus with antibiotic drugs might decrease the effectiveness of L.
Read the full Lactobacillus Acidophilus + Amoxicillin, Omeprazole Magnesium, Rifabutin interactionBifidobacterium LongumAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bifidobacterium longum with antibiotic drugs might decrease the effectiveness of B.
Read the full Bifidobacterium Longum + Amoxicillin, Omeprazole Magnesium, Rifabutin interactionAmphotericin, TetracyclineMysteclin-F
How Amphotericin, Tetracycline interacts with Cal'dophilus With FOS — through 2 ingredients. Tap an ingredient for the detail:
Bifidobacterium LongumAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bifidobacterium longum with antibiotic drugs might decrease the effectiveness of B.
Read the full Bifidobacterium Longum + Amphotericin, Tetracycline interactionLactobacillus AcidophilusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus acidophilus with antibiotic drugs might decrease the effectiveness of L.
Read the full Lactobacillus Acidophilus + Amphotericin, Tetracycline interactionAmpicillinOmnipen, Omnipen-N, Penbritin, Principen, Rimacillin
How Ampicillin interacts with Cal'dophilus With FOS — through 2 ingredients. Tap an ingredient for the detail:
Lactobacillus AcidophilusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus acidophilus with antibiotic drugs might decrease the effectiveness of L.
Read the full Lactobacillus Acidophilus + Ampicillin interactionBifidobacterium LongumAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bifidobacterium longum with antibiotic drugs might decrease the effectiveness of B.
Read the full Bifidobacterium Longum + Ampicillin interactionAmpicillin, SulbactamUnasyn
How Ampicillin, Sulbactam interacts with Cal'dophilus With FOS — through 2 ingredients. Tap an ingredient for the detail:
Lactobacillus AcidophilusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus acidophilus with antibiotic drugs might decrease the effectiveness of L.
Read the full Lactobacillus Acidophilus + Ampicillin, Sulbactam interactionBifidobacterium LongumAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bifidobacterium longum with antibiotic drugs might decrease the effectiveness of B.
Read the full Bifidobacterium Longum + Ampicillin, Sulbactam interactionAvibactam Sodium, CeftazidimeAvycaz
How Avibactam Sodium, Ceftazidime interacts with Cal'dophilus With FOS — through 2 ingredients. Tap an ingredient for the detail:
Bifidobacterium LongumAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bifidobacterium longum with antibiotic drugs might decrease the effectiveness of B.
Read the full Bifidobacterium Longum + Avibactam Sodium, Ceftazidime interactionLactobacillus AcidophilusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus acidophilus with antibiotic drugs might decrease the effectiveness of L.
Read the full Lactobacillus Acidophilus + Avibactam Sodium, Ceftazidime interactionAzithromycinAzasite, Zithromax, Zmax
How Azithromycin interacts with Cal'dophilus With FOS — through 2 ingredients. Tap an ingredient for the detail:
Lactobacillus AcidophilusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus acidophilus with antibiotic drugs might decrease the effectiveness of L.
Read the full Lactobacillus Acidophilus + Azithromycin interactionBifidobacterium LongumAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bifidobacterium longum with antibiotic drugs might decrease the effectiveness of B.
Read the full Bifidobacterium Longum + Azithromycin interactionAztreonamAzactam
How Aztreonam interacts with Cal'dophilus With FOS — through 2 ingredients. Tap an ingredient for the detail:
Bifidobacterium LongumAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bifidobacterium longum with antibiotic drugs might decrease the effectiveness of B.
Read the full Bifidobacterium Longum + Aztreonam interactionLactobacillus AcidophilusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus acidophilus with antibiotic drugs might decrease the effectiveness of L.
Read the full Lactobacillus Acidophilus + Aztreonam interactionBacampicillinPenglobe
How Bacampicillin interacts with Cal'dophilus With FOS — through 2 ingredients. Tap an ingredient for the detail:
Lactobacillus AcidophilusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus acidophilus with antibiotic drugs might decrease the effectiveness of L.
Read the full Lactobacillus Acidophilus + Bacampicillin interactionBifidobacterium LongumAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bifidobacterium longum with antibiotic drugs might decrease the effectiveness of B.
Read the full Bifidobacterium Longum + Bacampicillin interactionBacitracinBaci-IM, Baciguent, Bacitracin Ointment
How Bacitracin interacts with Cal'dophilus With FOS — through 2 ingredients. Tap an ingredient for the detail:
Lactobacillus AcidophilusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus acidophilus with antibiotic drugs might decrease the effectiveness of L.
Read the full Lactobacillus Acidophilus + Bacitracin interactionBifidobacterium LongumAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bifidobacterium longum with antibiotic drugs might decrease the effectiveness of B.
Read the full Bifidobacterium Longum + Bacitracin interactionBenznidazoleBenznidazole
How Benznidazole interacts with Cal'dophilus With FOS — through 2 ingredients. Tap an ingredient for the detail:
Bifidobacterium LongumAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bifidobacterium longum with antibiotic drugs might decrease the effectiveness of B.
Read the full Bifidobacterium Longum + Benznidazole interactionLactobacillus AcidophilusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus acidophilus with antibiotic drugs might decrease the effectiveness of L.
Read the full Lactobacillus Acidophilus + Benznidazole interactionBismuth Subsalicylate, Metronidazole, TetracyclineHelidac
How Bismuth Subsalicylate, Metronidazole, Tetracycline interacts with Cal'dophilus With FOS — through 2 ingredients. Tap an ingredient for the detail:
Lactobacillus AcidophilusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus acidophilus with antibiotic drugs might decrease the effectiveness of L.
Read the full Lactobacillus Acidophilus + Bismuth Subsalicylate, Metronidazole, Tetracycline interactionBifidobacterium LongumAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bifidobacterium longum with antibiotic drugs might decrease the effectiveness of B.
Read the full Bifidobacterium Longum + Bismuth Subsalicylate, Metronidazole, Tetracycline interactionCapreomycinCapastat
How Capreomycin interacts with Cal'dophilus With FOS — through 2 ingredients. Tap an ingredient for the detail:
Bifidobacterium LongumAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bifidobacterium longum with antibiotic drugs might decrease the effectiveness of B.
Read the full Bifidobacterium Longum + Capreomycin interactionLactobacillus AcidophilusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus acidophilus with antibiotic drugs might decrease the effectiveness of L.
Read the full Lactobacillus Acidophilus + Capreomycin interactionCarbenicillin Indanyl SodiumGeocillin
How Carbenicillin Indanyl Sodium interacts with Cal'dophilus With FOS — through 2 ingredients. Tap an ingredient for the detail:
Lactobacillus AcidophilusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus acidophilus with antibiotic drugs might decrease the effectiveness of L.
Read the full Lactobacillus Acidophilus + Carbenicillin Indanyl Sodium interactionBifidobacterium LongumAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bifidobacterium longum with antibiotic drugs might decrease the effectiveness of B.
Read the full Bifidobacterium Longum + Carbenicillin Indanyl Sodium interactionCefaclorCeclor, Ceclor CD
How Cefaclor interacts with Cal'dophilus With FOS — through 2 ingredients. Tap an ingredient for the detail:
Lactobacillus AcidophilusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus acidophilus with antibiotic drugs might decrease the effectiveness of L.
Read the full Lactobacillus Acidophilus + Cefaclor interactionBifidobacterium LongumAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bifidobacterium longum with antibiotic drugs might decrease the effectiveness of B.
Read the full Bifidobacterium Longum + Cefaclor interactionCefadroxilCef-Tab, Duricef, Ultracef
How Cefadroxil interacts with Cal'dophilus With FOS — through 2 ingredients. Tap an ingredient for the detail:
Lactobacillus AcidophilusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus acidophilus with antibiotic drugs might decrease the effectiveness of L.
Read the full Lactobacillus Acidophilus + Cefadroxil interactionBifidobacterium LongumAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bifidobacterium longum with antibiotic drugs might decrease the effectiveness of B.
Read the full Bifidobacterium Longum + Cefadroxil interactionCefamandoleMandol
How Cefamandole interacts with Cal'dophilus With FOS — through 2 ingredients. Tap an ingredient for the detail:
Lactobacillus AcidophilusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus acidophilus with antibiotic drugs might decrease the effectiveness of L.
Read the full Lactobacillus Acidophilus + Cefamandole interactionBifidobacterium LongumAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bifidobacterium longum with antibiotic drugs might decrease the effectiveness of B.
Read the full Bifidobacterium Longum + Cefamandole interactionCefazolinAncef
How Cefazolin interacts with Cal'dophilus With FOS — through 2 ingredients. Tap an ingredient for the detail:
Bifidobacterium LongumAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bifidobacterium longum with antibiotic drugs might decrease the effectiveness of B.
Read the full Bifidobacterium Longum + Cefazolin interactionLactobacillus AcidophilusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus acidophilus with antibiotic drugs might decrease the effectiveness of L.
Read the full Lactobacillus Acidophilus + Cefazolin interactionCefdinirOmnicef
How Cefdinir interacts with Cal'dophilus With FOS — through 2 ingredients. Tap an ingredient for the detail:
Lactobacillus AcidophilusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus acidophilus with antibiotic drugs might decrease the effectiveness of L.
Read the full Lactobacillus Acidophilus + Cefdinir interactionBifidobacterium LongumAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bifidobacterium longum with antibiotic drugs might decrease the effectiveness of B.
Read the full Bifidobacterium Longum + Cefdinir interactionCefditoren PivoxilSpectracef
How Cefditoren Pivoxil interacts with Cal'dophilus With FOS — through 2 ingredients. Tap an ingredient for the detail:
Lactobacillus AcidophilusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus acidophilus with antibiotic drugs might decrease the effectiveness of L.
Read the full Lactobacillus Acidophilus + Cefditoren Pivoxil interactionBifidobacterium LongumAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bifidobacterium longum with antibiotic drugs might decrease the effectiveness of B.
Read the full Bifidobacterium Longum + Cefditoren Pivoxil interactionCefepimeMaxipime
How Cefepime interacts with Cal'dophilus With FOS — through 2 ingredients. Tap an ingredient for the detail:
Bifidobacterium LongumAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bifidobacterium longum with antibiotic drugs might decrease the effectiveness of B.
Read the full Bifidobacterium Longum + Cefepime interactionLactobacillus AcidophilusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus acidophilus with antibiotic drugs might decrease the effectiveness of L.
Read the full Lactobacillus Acidophilus + Cefepime interactionCefiderocol Sulfate TosylateFetroja
How Cefiderocol Sulfate Tosylate interacts with Cal'dophilus With FOS — through 2 ingredients. Tap an ingredient for the detail:
Lactobacillus AcidophilusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus acidophilus with antibiotic drugs might decrease the effectiveness of L.
Read the full Lactobacillus Acidophilus + Cefiderocol Sulfate Tosylate interactionBifidobacterium LongumAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bifidobacterium longum with antibiotic drugs might decrease the effectiveness of B.
Read the full Bifidobacterium Longum + Cefiderocol Sulfate Tosylate interactionCefiximeSuprax
How Cefixime interacts with Cal'dophilus With FOS — through 2 ingredients. Tap an ingredient for the detail:
Lactobacillus AcidophilusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus acidophilus with antibiotic drugs might decrease the effectiveness of L.
Read the full Lactobacillus Acidophilus + Cefixime interactionBifidobacterium LongumAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bifidobacterium longum with antibiotic drugs might decrease the effectiveness of B.
Read the full Bifidobacterium Longum + Cefixime interactionCefmetazoleZefazone
How Cefmetazole interacts with Cal'dophilus With FOS — through 2 ingredients. Tap an ingredient for the detail:
Lactobacillus AcidophilusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus acidophilus with antibiotic drugs might decrease the effectiveness of L.
Read the full Lactobacillus Acidophilus + Cefmetazole interactionBifidobacterium LongumAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bifidobacterium longum with antibiotic drugs might decrease the effectiveness of B.
Read the full Bifidobacterium Longum + Cefmetazole interactionCefonicidMonocid
How Cefonicid interacts with Cal'dophilus With FOS — through 2 ingredients. Tap an ingredient for the detail:
Bifidobacterium LongumAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bifidobacterium longum with antibiotic drugs might decrease the effectiveness of B.
Read the full Bifidobacterium Longum + Cefonicid interactionLactobacillus AcidophilusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus acidophilus with antibiotic drugs might decrease the effectiveness of L.
Read the full Lactobacillus Acidophilus + Cefonicid interactionCefoperazoneCefobid
How Cefoperazone interacts with Cal'dophilus With FOS — through 2 ingredients. Tap an ingredient for the detail:
Lactobacillus AcidophilusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus acidophilus with antibiotic drugs might decrease the effectiveness of L.
Read the full Lactobacillus Acidophilus + Cefoperazone interactionBifidobacterium LongumAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bifidobacterium longum with antibiotic drugs might decrease the effectiveness of B.
Read the full Bifidobacterium Longum + Cefoperazone interactionCefotaximeClaforan
How Cefotaxime interacts with Cal'dophilus With FOS — through 2 ingredients. Tap an ingredient for the detail:
Bifidobacterium LongumAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bifidobacterium longum with antibiotic drugs might decrease the effectiveness of B.
Read the full Bifidobacterium Longum + Cefotaxime interactionLactobacillus AcidophilusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus acidophilus with antibiotic drugs might decrease the effectiveness of L.
Read the full Lactobacillus Acidophilus + Cefotaxime interactionEach ingredient & the kinds of drugs it affects
For each ingredient in Cal'dophilus With FOS 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.
Bifidobacterium longum
Antibiotic Drugs
Theoretically, taking Bifidobacterium longum with antibiotic drugs might decrease the effectiveness of B. longum.
Since B. longum 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. longum preparations by at least 2 hours.
Lactobacillus acidophilus
Antibiotic Drugs
Theoretically, taking Lactobacillus acidophilus with antibiotic drugs might decrease the effectiveness of L. acidophilus.
L. acidophilus 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 L. acidophilus preparations by at least two hours.
Brand information
Manufacturer and brand details for Cal'dophilus With FOS, from the product label.
Cal'dophilus With FOS by Natural Factors: Common Questions
Does Cal'dophilus With FOS by Natural Factors interact with any medications?
How can one product interact with so many drugs?
Where does this information come from?
Can I take this while I'm on an antibiotic?
Is this safe if I'm pregnant or breastfeeding?
What's FOS, and why is it in here?
Will this give me gas or bloating?
Does this actually work for irritable bowel syndrome?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Not sure if Cal'dophilus With FOS 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 Cal'dophilus With FOS’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Bifidobacterium Longum
Interacts with 182 drugsBifidobacterium longum is a 'friendly' bacterium found naturally in the human gut and used as a probiotic. It is generally well tolerated and is most studied for digestive issues, though evi...
Read the full Bifidobacterium Longum monograph → Herb & supplement monographLactobacillus Acidophilus
Interacts with 182 drugsLactobacillus acidophilus is a 'friendly' bacterium used as a probiotic to support gut and vaginal health. It is generally well tolerated in healthy people, and there is reasonable evidence...
Read the full Lactobacillus Acidophilus monograph →Sources & How We Checked
Cal'dophilus With FOS'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 36 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.
Bifidobacterium Longum 21 references
- Ha GY, Yang CH, Kim H, Chong Y. Case of sepsis caused by Bifidobacterium longum. J Clin Microbiol 1999;37:1227-8.
- Pierce A. The American Pharmaceutical Association Practical Guide to Natural Medicines. New York: The Stonesong Press, 1999:19.
- Xiao JZ, Takahashi S, Odamaki T, et al. Antibiotic susceptibility of bifidobacterial strains distributed in the Japanese market. Biosci Biotechnol Biochem. 2010;74(2):336-42. PubMed
- Rautava S, Kainonen E, Salminen S, Isolauri E. Maternal probiotic supplementation during pregnancy and breast-feeding reduces the risk of eczema in the infant. J Allergy Clin Immunol. 2012;130(6):1355-60. PubMed
- 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.
- Pellonperä O, Vahlberg T, Mokkala K, et al. Weight gain and body composition during pregnancy: a randomised pilot trial with probiotics and/or fish oil. Br J Nutr. 2020 Nov 4:1-11. PubMed
- Pellonperä O, Mokkala K, Houttu N, et al. Efficacy of fish oil and/or probiotic intervention on the incidence of gestational diabetes mellitus in an at-risk group of overweight and obese women: A randomized, placebo-controlled, double-blind clinical trial PubMed
- Shahriari A, Karimi E, Shahriari M, Aslani N, Khooshideh M, Arab A. The effect of probiotic supplementation on the risk of gestational diabetes mellitus among high-risk pregnant women: A parallel double-blind, randomized, placebo-controlled clinical trial PubMed
- Esaiassen E, Hjerde E, Cavanagh JP, Simonsen GS, Klingenberg C; Norwegian Study Group on Invasive Bifidobacterial Infections. Bifidobacterium bacteremia: Clinical characteristics and a genomic approach to assess pathogenicity. J Clin Microbiol. 2017;55(7) PubMed
- Enomoto T, Sowa M, Nishimori K, et al. Effects of bifidobacterial supplementation to pregnant women and infants in the prevention of allergy development in infants and on fecal microbiota. Allergol Int 2014;63(4):575-85. PubMed
- US Food and Drug Administration (FDA). Dear Healthcare Provider Letter: Warning Regarding Use of Probiotics in Preterm Infants. September 2023. Available at: https://www.fda.gov/media/172606/download?attachment. Accessed November 1, 2023.
- Pillai A, Tan J, Paquette V, Panczuk J. Does probiotic bacteremia in premature infants impact clinically relevant outcomes? A case report and updated review of literature. Clin Nutr ESPEN. 2020;39:255-259. PubMed
- Sabaté JM, Iglicki F. Effect of Bifidobacterium longum 35624 on disease severity and quality of life in patients with irritable bowel syndrome. World J Gastroenterol 2022;28(7):732-744.
- Malaguarnera M, Greco F, Barone G, Gargante MP, Malaguarnera M, Toscano MA. Bifidobacterium longum with fructo-oligosaccharide (FOS) treatment in minimal hepatic encephalopathy: a randomized, double-blind, placebo-controlled study. Dig Dis Sci 2007;52(11) PubMed
- Zbinden A, Zbinden R, Berger C, Arlettaz R. Case series of Bifidobacterium longum bacteremia in three preterm infants on probiotic therapy. Neonatology 2015;107(1):56-9.
- Tamaki H, Nakase H, Inoue S, et al. Efficacy of probiotic treatment with Bifidobacterium longum 536 for induction of remission in active ulcerative colitis: A randomized, double-blinded, placebo-controlled multicenter trial. Dig Endosc 2016;28(1):67-74.
- Bertelli C, Pillonel T, Torregrossa A, et al. Bifidobacterium longum bacteremia in preterm infants receiving probiotics. Clin Infect Dis 2015;60(6):924-7. PubMed
- Esaiassen E, Cavanagh P, Hjerde E, Simonsen GS, Støen R, Klingenberg C. Bifidobacterium longum subspecies infantis bacteremia in 3 extremely preterm infants receiving probiotics. Emerg Infect Dis 2016;22(9):1664-6.
- Tena D, Losa C, Medina MJ, Sáez-Nieto JA. Peritonitis caused by Bifidobacterium longum: case report and literature review. Anaerobe 2014;27:27-30. PubMed
- Sangkanjanavanich S, Pradubpongsa P, Mitthamsiri W, Sangasapaviliya A, Boonpiyathad T. Bifidobacterium infantis 35624 efficacy in patients with uncontrolled asthma: A randomized placebo-controlled trial. Ann Allergy Asthma Immunol 2022;129(6):790-792. PubMed
- Wilson HL, Ong CW. Bifidobacterium longum vertebrodiscitis in a patient with cirrhosis and prostate cancer. Anaerobe 2017;47:47-50. PubMed
See these in context on the Bifidobacterium Longum monograph →
Lactobacillus Acidophilus 15 references
- Pierce A. The American Pharmaceutical Association Practical Guide to Natural Medicines. New York: The Stonesong Press, 1999:19.
- Begtrup LM, de Muckadell OB, Kjeldsen J, Christensen RD, Jarbøl DE. Long-term treatment with probiotics in primary care patients with irritable bowel syndrome--a randomised, double-blind, placebo controlled trial. Scand J Gastroenterol 2013;48(10):1127-35 PubMed
- Chatterjee S, Kar P, Das T, Ray S, Gangulyt S, Rajendiran C, Mitra M. Randomised placebo-controlled double blind multicentric trial on efficacy and safety of Lactobacillus acidophilus LA-5 and Bifidobacterium BB-12 for prevention of antibiotic-associated
- Shavakhi A, Tabesh E, Yaghoutkar A, Hashemi H, Tabesh F, Khodadoostan M,Minakari M, Shavakhi S, Gholamrezaei A. The effects of multistrain probiotic compound on bismuth-containing quadruple therapy for Helicobacter pylori infection: a randomized placebo-c
- Karamali M, Dadkhah F, Sadrkhanlou M, et al. Effects of probiotic supplementation on glycaemic control and lipid profiles in gestational diabetes: a randomized, double-blind, placebo-controlled trial. Diabetes Metab 2016;42(4):234-41. PubMed
- Badehnoosh B, Karamali M, Zarrati M, et al. The effects of probiotic supplementation on biomarkers of inflammation, oxidative stress and pregnancy outcomes in gestational diabetes. J Matern Fetal Neonatal Med. 2018 May;31(9):1128-1136.
- Kumar S, Kumar R, Rohilla L, Jacob N, Yadav J, Sachdeva N. A high potency multi-strain probiotic improves glycemic control in children with new-onset type 1 diabetes mellitus: A randomized, double-blind, and placebo-controlled pilot study. Pediatr Diabete
- Shahriari A, Karimi E, Shahriari M, Aslani N, Khooshideh M, Arab A. The effect of probiotic supplementation on the risk of gestational diabetes mellitus among high-risk pregnant women: A parallel double-blind, randomized, placebo-controlled clinical trial PubMed
- Xiao SD, Zhang DZ, Lu H, et al. Multicenter, randomized, controlled trial of heat-killed Lactobacillus acidophilus LB in patients with chronic diarrhea. Adv Ther. 2003;20(5):253-60.
- 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
- Ozer M, Goksu SY, Shahverdiani A, Mustafa M. Lactobacillus acidophilus-induced endocarditis and associated splenic abscess. Case Rep Infect Dis 2020;2020:1382709.
- Sadrin S, Sennoune S, Gout B, et al. A 2-strain mixture of Lactobacillus acidophilus in the treatment of irritable bowel syndrome: A placebo-controlled randomized clinical trial. Dig Liver Dis 2020;52(5):534-540. PubMed
- Stoffer JN, Slingsby TJ, Giuliari GP. Lactobacillus acidophilus endophthalmitis after intravitreal bevacizumab injection requiring intraocular lens explantation. Can J Ophthalmol 2022;57(1):e21-e22. PubMed
- Cukovic-Cavka S, Likic R, Francetic I, Rustemovic N, Opacic M, Vucelic B. Lactobacillus acidophilus as a cause of liver abscess in a NOD2/CARD15-positive patient with Crohn's disease. Digestion 2006;73(2-3):107-10.
- Hui J, Ren Y, Wang Y, Han Q. Lactobacillus acidophilus endophthalmitis postcataract operation: A case report with a literature review. Ocul Immunol Inflamm 2023.
See these in context on the Lactobacillus Acidophilus 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.
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