Acidophilus Probiotic Blend Ingredients & Drug Interactions
by 21st Century
What is this page for?
First and foremost: checking Acidophilus Probiotic Blend 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
Acidophilus Probiotic Blend is a dietary supplement by 21st Century with 4 active ingredients. Its ingredients are commonly taken for digestive health and balance, diarrhea (including antibiotic-related), vaginal yeast and bacterial infections.Based on those ingredients, 182 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Lactobacillus acidophilus, Bifidobacterium bifidum. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
Check Your Meds Against Acidophilus Probiotic Blend by 21st Century
Ask about any prescription or over-the-counter medication and we check it for interactions with Acidophilus Probiotic Blend by 21st Century — 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 Acidophilus Probiotic Blend by 21st Century
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
Low disclosure
This blend contains four active probiotic strains: Lactobacillus acidophilus, Lactobacillus salivarius, Bifidobacterium bifidum, and Streptococcus thermophilus. These are live, beneficial bacteria meant to support your gut flora.
The inactive ingredients include whey, inulin, gelatin, cellulose, and citrus pectin — the gelatin and cellulose help form the capsule.
Does it work?
Moderate evidence
The evidence is mixed and depends on what you're using it for. Lactobacillus acidophilus is possibly effective for irritable bowel syndrome (IBS), antibiotic-associated diarrhea, Helicobacter pylori, and bacterial vaginosis, but possibly ineffective for atopic disease.
Bifidobacterium bifidum is possibly effective for IBS and respiratory tract infections. For Streptococcus thermophilus, the evidence isn't established — we have insufficient data on whether it works for the conditions studied.
If you're considering this for a specific health concern, ask your pharmacist whether the science supports it for your situation.
How safe is it?
Well-documented data
Lactobacillus acidophilus and Bifidobacterium bifidum are generally well tolerated in healthy adults and children. That said, both contain live microorganisms, and in rare cases serious infections like bacteremia or sepsis have been reported — mostly in people with weakened immune systems or serious illness.
Mild gastrointestinal side effects like bloating, gas, abdominal discomfort, or diarrhea can happen, but they're uncommon. Streptococcus thermophilus is generally well tolerated in healthy people; people with weakened immune systems should be cautious with all three.
For pregnancy and lactation, the data show these ingredients are possibly safe, but evidence is limited — talk with your doctor or pharmacist for personalized advice.
Meds to double-check
Moderate interaction found
Separate this product from antibiotic drugs by a few hours — antibiotics can kill the live bacteria in the supplement and reduce its effectiveness. This is a Moderate interaction affecting 182 individual medications.
Use the medication checker on this page to see if your antibiotic is one of them.
The bottom line
Scorecard at a glanceFormula with limited ingredient disclosure with some supporting evidence behind its ingredients' uses. Moderate medication interactions have been identified, and safety information is well characterized.
This probiotic blend is generally well tolerated in healthy adults and may help with IBS and antibiotic-associated diarrhea. The main thing to watch for is antibiotics — separate them by a few hours from this supplement so the antibiotics don't kill the beneficial bacteria.
If you have a weakened immune system or serious illness, check with your doctor first.
Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI
Assessment coverage: 3 of 4 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Aug 23, 2019.
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 Acidophilus Probiotic Blend, straight from the product label.
| Brand | 21st Century |
|---|---|
| Barcode (UPC) | 740985213391 |
| Net contents | 100 Capsule(s) |
| Market status | On market |
| Date entered into DSLD | Aug 23, 2019 |
| DSLD ID | 205615 |
| Product type | Non-nutrient/non-botanical |
| Supplement form | Capsule |
| Dietary claims / uses | Nutrient, All Other, Structure/Function |
| Intended target group(s) | Adult (18 - 50 Years), 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 Acidophilus Probiotic Blend by 21st Century, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| Proprietary Blend | 175 mg | -- |
| Lactobacillus acidophilus | 0 NP | -- |
| Lactobacillus salivarius | 0 NP | -- |
| Bifidobacterium bifidum | 0 NP | -- |
| Streptococcus thermophilus | 0 NP | -- |
Other ingredients: Whey, Inulin, Gelatin, Cellulose, Citrus Pectin, Contains <2% of
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
Directions: As a dietary supplement, adults take one (1) capsule daily with any meal or as directed by a healthcare provider. Do not exceed recommended dosage.
Precautions
Do not exceed recommended dosage.
Warning: Consult a healthcare provider prior to use if pregnant, nursing, on medications, have a medical condition or are planning a medical procedure.
Stop use and contact a physician if adverse reactions occur.
Keep out of reach of children.
Do not use if product appears to be tampered with or seal is broken.
Contains milk ingredients (whey).
General Statements
Individual results may vary.
Proprietary Blend Designed to Support Healthy Intestinal Flora
Storage
Store at room temperature.
Formulation
No added Sugar, Salt, Preservatives, Artificial Flavors or Colors. Gluten Free.
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.
FDA Statement of Identity
Dietary Supplement
Seals/Symbols
Gluten free
Guaranteed quality Laboratory tested
Formula
Contains milk ingredients (whey).
A proprietary blend of the most beneficial known strain of Lactobacillus acidophilus, synergistically combined with three other genetically distinct probiotic organisms and the prebioitc Inulin, is designed to aid in the maintenance of probiotic activity in the intestine.
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
Acidophilus Probiotic Blend by 21st Century 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 Acidophilus Probiotic Blend by 21st Century
These are the 4 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.
Proprietary Blend
- › Lactobacillus acidophilus
- › Lactobacillus salivarius
- › Bifidobacterium bifidum
- › Streptococcus thermophilus
Other (inactive) ingredients: Whey, Inulin, Gelatin, Cellulose, Citrus Pectin, Contains <2% of. These complete the product’s ingredient list but are not active constituents.
Acidophilus Probiotic Blend by 21st Century Drug Interactions
HelloPharmacist Interaction Report
21st Century Acidophilus Probiotic Blend contains live bacterial organisms that interact with antibiotic drugs.
Both Lactobacillus acidophilus and Bifidobacterium bifidum can theoretically lose effectiveness if taken at the same time as antibiotics, because the antibiotics may kill the beneficial bacteria in the supplement. This is a Moderate interaction — not an emergency, but worth planning around.
Read the full breakdown — every affected drug type, severity by severity
Streptococcus thermophilus, one of the four active ingredients, has no known interactions documented in our data. We couldn't check Lactobacillus salivarius — we hold no interaction data for it.
Altogether, these interactions span 182 individual medications. If you take any antibiotic, use the medication checker below to see if it's one of them, and talk to your pharmacist about spacing — generally, separate the antibiotic and probiotic by a few hours if you can.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against Acidophilus Probiotic Blend?
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 Acidophilus Probiotic Blend interact with 182 drugs. Click any drug to see the details.
2 of the 4 ingredients in Acidophilus Probiotic Blend interact with drugs. Each result below shows which ingredient is responsible. Lactobacillus acidophilus Bifidobacterium bifidum
AmikacinAmikin, Arikayce
How Amikacin interacts with Acidophilus Probiotic Blend — through 2 ingredients. Tap an ingredient for the detail:
Bifidobacterium BifidumAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bifidobacterium.
Read the full Bifidobacterium Bifidum + 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 Acidophilus Probiotic Blend — 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 BifidumAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bifidobacterium.
Read the full Bifidobacterium Bifidum + Amoxicillin interactionAmoxicillin VeterinaryBiomox
How Amoxicillin Veterinary interacts with Acidophilus Probiotic Blend — 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 BifidumAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bifidobacterium.
Read the full Bifidobacterium Bifidum + 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 Acidophilus Probiotic Blend — 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 BifidumAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bifidobacterium.
Read the full Bifidobacterium Bifidum + Amoxicillin, Clavulanate Potassium interactionAmoxicillin, Omeprazole Magnesium, RifabutinTalicia
How Amoxicillin, Omeprazole Magnesium, Rifabutin interacts with Acidophilus Probiotic Blend — 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 BifidumAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bifidobacterium.
Read the full Bifidobacterium Bifidum + Amoxicillin, Omeprazole Magnesium, Rifabutin interactionAmphotericin, TetracyclineMysteclin-F
How Amphotericin, Tetracycline interacts with Acidophilus Probiotic Blend — through 2 ingredients. Tap an ingredient for the detail:
Bifidobacterium BifidumAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bifidobacterium.
Read the full Bifidobacterium Bifidum + 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 Acidophilus Probiotic Blend — 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 BifidumAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bifidobacterium.
Read the full Bifidobacterium Bifidum + Ampicillin interactionAmpicillin, SulbactamUnasyn
How Ampicillin, Sulbactam interacts with Acidophilus Probiotic Blend — 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 BifidumAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bifidobacterium.
Read the full Bifidobacterium Bifidum + Ampicillin, Sulbactam interactionAvibactam Sodium, CeftazidimeAvycaz
How Avibactam Sodium, Ceftazidime interacts with Acidophilus Probiotic Blend — through 2 ingredients. Tap an ingredient for the detail:
Bifidobacterium BifidumAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bifidobacterium.
Read the full Bifidobacterium Bifidum + 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 Acidophilus Probiotic Blend — 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 BifidumAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bifidobacterium.
Read the full Bifidobacterium Bifidum + Azithromycin interactionAztreonamAzactam
How Aztreonam interacts with Acidophilus Probiotic Blend — through 2 ingredients. Tap an ingredient for the detail:
Bifidobacterium BifidumAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bifidobacterium.
Read the full Bifidobacterium Bifidum + 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 Acidophilus Probiotic Blend — 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 BifidumAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bifidobacterium.
Read the full Bifidobacterium Bifidum + Bacampicillin interactionBacitracinBaci-IM, Baciguent, Bacitracin Ointment
How Bacitracin interacts with Acidophilus Probiotic Blend — 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 BifidumAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bifidobacterium.
Read the full Bifidobacterium Bifidum + Bacitracin interactionBenznidazoleBenznidazole
How Benznidazole interacts with Acidophilus Probiotic Blend — through 2 ingredients. Tap an ingredient for the detail:
Bifidobacterium BifidumAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bifidobacterium.
Read the full Bifidobacterium Bifidum + 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 Acidophilus Probiotic Blend — 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 BifidumAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bifidobacterium.
Read the full Bifidobacterium Bifidum + Bismuth Subsalicylate, Metronidazole, Tetracycline interactionCapreomycinCapastat
How Capreomycin interacts with Acidophilus Probiotic Blend — through 2 ingredients. Tap an ingredient for the detail:
Bifidobacterium BifidumAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bifidobacterium.
Read the full Bifidobacterium Bifidum + 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 Acidophilus Probiotic Blend — 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 BifidumAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bifidobacterium.
Read the full Bifidobacterium Bifidum + Carbenicillin Indanyl Sodium interactionCefaclorCeclor, Ceclor CD
How Cefaclor interacts with Acidophilus Probiotic Blend — 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 BifidumAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bifidobacterium.
Read the full Bifidobacterium Bifidum + Cefaclor interactionCefadroxilCef-Tab, Duricef, Ultracef
How Cefadroxil interacts with Acidophilus Probiotic Blend — 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 BifidumAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bifidobacterium.
Read the full Bifidobacterium Bifidum + Cefadroxil interactionCefamandoleMandol
How Cefamandole interacts with Acidophilus Probiotic Blend — 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 BifidumAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bifidobacterium.
Read the full Bifidobacterium Bifidum + Cefamandole interactionCefazolinAncef
How Cefazolin interacts with Acidophilus Probiotic Blend — through 2 ingredients. Tap an ingredient for the detail:
Bifidobacterium BifidumAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bifidobacterium.
Read the full Bifidobacterium Bifidum + 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 Acidophilus Probiotic Blend — 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 BifidumAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bifidobacterium.
Read the full Bifidobacterium Bifidum + Cefdinir interactionCefditoren PivoxilSpectracef
How Cefditoren Pivoxil interacts with Acidophilus Probiotic Blend — 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 BifidumAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bifidobacterium.
Read the full Bifidobacterium Bifidum + Cefditoren Pivoxil interactionCefepimeMaxipime
How Cefepime interacts with Acidophilus Probiotic Blend — through 2 ingredients. Tap an ingredient for the detail:
Bifidobacterium BifidumAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bifidobacterium.
Read the full Bifidobacterium Bifidum + 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 Acidophilus Probiotic Blend — 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 BifidumAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bifidobacterium.
Read the full Bifidobacterium Bifidum + Cefiderocol Sulfate Tosylate interactionCefiximeSuprax
How Cefixime interacts with Acidophilus Probiotic Blend — 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 BifidumAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bifidobacterium.
Read the full Bifidobacterium Bifidum + Cefixime interactionCefmetazoleZefazone
How Cefmetazole interacts with Acidophilus Probiotic Blend — 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 BifidumAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bifidobacterium.
Read the full Bifidobacterium Bifidum + Cefmetazole interactionCefonicidMonocid
How Cefonicid interacts with Acidophilus Probiotic Blend — through 2 ingredients. Tap an ingredient for the detail:
Bifidobacterium BifidumAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bifidobacterium.
Read the full Bifidobacterium Bifidum + 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 Acidophilus Probiotic Blend — 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 BifidumAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bifidobacterium.
Read the full Bifidobacterium Bifidum + Cefoperazone interactionCefotaximeClaforan
How Cefotaxime interacts with Acidophilus Probiotic Blend — through 2 ingredients. Tap an ingredient for the detail:
Bifidobacterium BifidumAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Bifidobacterium.
Read the full Bifidobacterium Bifidum + 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 Acidophilus Probiotic Blend 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.
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.
Bifidobacterium bifidum
Antibiotic Drugs
Theoretically, taking Bifidobacterium. bifidum with antibiotic drugs might decrease the effectiveness of B. bifidum.
Since B. bifidum 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. bifidum preparations by at least 2 hours.
Brand information
Manufacturer and brand details for Acidophilus Probiotic Blend, from the product label.
21st Century
See all 21st Century products- Name
- 21st Century HealthCare, Inc.
- Street Address
- 2119 S. Wilson St.
- City
- Tempe
- State
- AZ
- ZipCode
- 85282
- Web Address
- www.21stcenturyvitamins.com
Acidophilus Probiotic Blend by 21st Century: Common Questions
Does Acidophilus Probiotic Blend by 21st Century 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?
What side effects should I watch for?
Is this safe to take while pregnant or breastfeeding?
Does this actually work for IBS?
What exactly are these bacteria?
Should I be worried about infection from live bacteria in a supplement?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Not sure if Acidophilus Probiotic Blend 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 Acidophilus Probiotic Blend’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Lactobacillus 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 → Herb & supplement monographBifidobacterium Bifidum
Interacts with 182 drugsBifidobacterium bifidum is a 'friendly' bacteria (probiotic) that naturally lives in the human gut and is taken to support digestion and gut balance. Some evidence suggests probiotics may he...
Read the full Bifidobacterium Bifidum monograph → Herb & supplement monographStreptococcus Thermophilus
Streptococcus thermophilus is a friendly bacterium used as a probiotic, often combined with other strains in yogurt and supplements. It is generally well tolerated in healthy people and may...
Read the full Streptococcus Thermophilus monograph →Sources & How We Checked
Acidophilus Probiotic Blend'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 43 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.
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 →
Bifidobacterium Bifidum 7 references
- 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
- Rerksuppaphol S, Rerksuppaphol L. Randomized controlled trial of probiotics to reduce common cold in schoolchildren. Pediatr Int. 2012;54(5):682-7. PubMed
- 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.
- 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.
- 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
See these in context on the Bifidobacterium Bifidum monograph →
Streptococcus Thermophilus 21 references
- Saxelin M, Chuang NH, Chassy B, et al. Lactobacilli and bacteremia in southern Finland 1989-1992. Clin Infect Dis 1996;22:564-6. PubMed
- 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
- 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:
- 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
- Goldin BR. Health Benefits of probiotics. Br J Nutr 1998;80:S203-7. DOI
- 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.
- MacGregor G, Smith AJ, Thakker B, Kinsella J. Yoghurt biotherapy: contraindicated in immunosuppressed patients? Postgrad Med J 2002;78:366-7. PubMed
- Land MH, Rouster-Stevens K, Woods CR, et al. Lactobacillus sepsis associated with probiotic therapy. Pediatrics 2005;115:178-81.
- 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
- 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
- Dolatkhah N, Hajifaraji M, Abbasalizadeh F, Aghamohammadzadeh N, Mehrabi Y, Abbasi MM. Is there a value for probiotic supplements in gestational diabetes mellitus? A randomized clinical trial. J Health Popul Nutr. 2015;33:25. 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.
- 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
- 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
- Pasala S, Singer L, Arshad T, Roach K. Lactobacillus endocarditis in a healthy patient with probiotic use. IDCases. 2020;22:e00915. PubMed
- 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.
- 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
- 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
- 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
- Campbell RE, Miller A, Afroze A. Native valve endocarditis secondary to Lactobacillus paracasei bacteremia. Consultant. 2020;60(9):27-8. DOI
- 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 Streptococcus Thermophilus 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