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

Probiotic 40 Billion CFU Ingredients & Drug Interactions

by Arazo Nutrition

Probiotic 40 Billion CFU label
See full label image
Capsule Category: Other Combinations
Most serious interaction: Moderate
Clinical methodology reviewed by · Updated Sep 16, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Probiotic 40 Billion CFU 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

The interaction bottom line Most serious interaction: Moderate

Probiotic 40 Billion CFU is a dietary supplement by Arazo Nutrition with 6 active ingredients. Its ingredients are commonly taken for digestive and gut health, prebiotic to support good bacteria, constipation relief.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 (La-14). Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

Jump to a section

Check Your Meds Against Probiotic 40 Billion CFU by Arazo Nutrition

Ask about any prescription or over-the-counter medication and we check it for interactions with Probiotic 40 Billion CFU by Arazo Nutrition — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of Probiotic 40 Billion CFU by Arazo Nutrition

Our pharmacy team’s full take, with four database checks built into the cards below — a summary of what is known, not a grade of the product itself.

From our pharmacy team — supplement deep dive

Generated from HelloPharmacist’s pharmacist-curated databases and editorial rules · Last generated Sep 3, 2026

What’s inside

Low disclosure
Ingredient Transparency · database check
Low

Most active ingredients don't disclose an individual amount — you can't tell how much of each you're getting.

Why this rating?
  • The label discloses an exact amount for 0 of its 6 active ingredients.
  • “Proprietary Blend of Probiotic Bacteria” is a proprietary blend — the label doesn't break down how much of each component you get.

Probiotic 40 Billion CFU contains 6 active ingredients: four probiotic bacterial strains (Bifidobacterium lactis, Lactobacillus paracasei, Lactobacillus acidophilus, and Lactobacillus plantarum), plus fructooligosaccharide (a prebiotic fiber that feeds beneficial bacteria) and marine polysaccharides. The product also includes inactive ingredients—cellulose, rice dextrin, and L-leucine—that serve as fillers and stabilizers in the capsule.

Each capsule delivers billions of live microorganisms intended to support your gut flora. The specific strains are chosen for their individual roles; Lactobacillus acidophilus, for example, has been studied for IBS, Helicobacter pylori, antibiotic-associated diarrhea, and bacterial vaginosis.

Does it work?

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

This product doesn't appear to be marketed for a specific use, so we graded its ingredients' overall clinical evidence instead.

Moderate

Some clinical evidence supports its ingredients for:

Why this rating?
  • We looked at the product name, claims, and label statements and couldn't find a stated purpose to grade.
  • Since the label doesn't commit to one use, we graded the ingredients' overall clinical evidence instead.
  • On file: Antibiotic-associated diarrhea — rated "Possibly Effective" (Lactobacillus Acidophilus) (Natural Medicines).
  • On file: Bacterial vaginosis — rated "Possibly Effective" (Lactobacillus Acidophilus) (Natural Medicines).
  • On file: Helicobacter pylori — rated "Possibly Effective" (Lactobacillus Acidophilus) (Natural Medicines).
  • On file: Irritable bowel syndrome (IBS) — rated "Possibly Effective" (Lactobacillus Acidophilus) (Natural Medicines).

Among the ingredients we could evaluate, Lactobacillus acidophilus is possibly effective for irritable bowel syndrome (IBS), Helicobacter pylori infection, antibiotic-associated diarrhea, and bacterial vaginosis, and possibly ineffective for atopic disease (allergic conditions). For acute respiratory distress syndrome, the evidence isn't established in our data.

Fructooligosaccharide shows insufficient evidence to rate for osteoporosis, constipation, diabetes, travelers' diarrhea, and high cholesterol. We hold no effectiveness data for the other probiotic strains (Bifidobacterium lactis, Lactobacillus paracasei, and Lactobacillus plantarum) or marine polysaccharides in our records.

The evidence, ingredient by ingredient Fructo-oligosaccharides (fos) Lactobacillus Acidophilus

How safe is it?

Well-documented data
Safety Information · database check
Well characterized

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

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

Lactobacillus acidophilus is generally well tolerated in healthy adults and children. In combination with other probiotics, it may cause gastrointestinal side effects like abdominal pain, bloating, flatulence, diarrhea, or burping, though these are uncommon.

There is a theoretical concern that live bacteria could cause infection in some patients, but this is rare and usually occurs when bacteria move from their normal location in the body. Fructooligosaccharide is generally well tolerated at food amounts but commonly causes gas, bloating, and abdominal pain at higher doses.

A review of clinical trials shows that doses up to 15 grams daily for 8 weeks did not increase these symptoms compared with placebo. Pregnancy safety for Lactobacillus acidophilus is rated possibly safe; lactation data are not on file.

We hold no pregnancy or breastfeeding data for the other ingredients. Talk with your doctor or pharmacist for personalized advice if you're pregnant or nursing.

Side effects, ingredient by ingredient Fructo-oligosaccharides (fos) Lactobacillus Acidophilus

Meds to double-check

Moderate interaction found
Known Interaction Concern · database check
Moderate identified

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

Why this rating?
  • 1 of the 2 matched ingredients can interact with medications — Lactobacillus Acidophilus.
  • The most serious interaction on file is rated Moderate.
  • For scale: 182 individual medications appear in the full list. A big number alone doesn't make a product dangerous — what matters is whether YOUR medication is on it, so run yours through the interaction checker on this page.

If you take antibiotic drugs, check with your doctor or pharmacist about timing—you may need to separate when you take the antibiotic from when you take this probiotic. No other interactions are documented for the ingredients we could check.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a 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 may help with IBS, antibiotic-associated diarrhea, Helicobacter pylori, or bacterial vaginosis if Lactobacillus acidophilus is the active ingredient behind those benefits. If you take antibiotics, you'll want to space out the timing to avoid reducing the probiotic's effectiveness.

Since we couldn't check several of the ingredients here, and the side-effect profile includes gas and bloating, talk with your doctor or pharmacist before starting, especially if you have a compromised immune system or are pregnant.

Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI

Assessment coverage: 2 of 6 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Oct 23, 2020.

This Scorecard evaluates available label information, ingredient evidence, and known medication-safety considerations. It does not independently verify product identity, purity, potency, contamination, or manufacturing quality. How these ratings are computed

At a glance

General information

Key facts about Probiotic 40 Billion CFU, straight from the product label.

Brand Arazo Nutrition
Barcode (UPC) X001MFDX2P
Net contents 60 Capsule(s)
Market status On market
Date entered into DSLD Oct 23, 2020
DSLD ID 236954
Product type Other Combinations
Supplement form Capsule
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years)
From the label
Everything in this section is reproduced from the manufacturer’s own product label — it’s the label speaking, not HelloPharmacist. We show it so you can see exactly what the maker states; we don’t verify or endorse those statements.

Supplement Facts

The label details for Probiotic 40 Billion CFU by Arazo Nutrition, sourced from the NIH Dietary Supplement Label Database.

Supplement Facts

Daily Value (DV) Target Group(s):
Adults and children 4 or more years of age
Minimum serving Sizes:
2 Capsule(s)
Maximum serving Sizes:
2 Capsule(s)
Servings per container
30
UPC/BARCODE
X001MFDX2P
IngredientAmount% DV
Bifidobacterium lactis (Bl-04)0 NP--
Lactobacillus paracasei Lpc-370 NP--
Fructooligosaccharide0 NP--
Lactobacillus acidophilus (La-14)0 NP--
Lactobacillus plantarum (Lp-115)0 NP--
Proprietary Blend of Probiotic Bacteria0 NP--
Marine Polysaccharides0 NP--

Other ingredients: Cellulose, Rice Dextrin, L-Leucine

Tap any ingredient to jump to its full detail below.

Label statements
These statements are the manufacturer’s wording, reproduced from the product label — the label is saying it, not HelloPharmacist. We don’t verify or endorse them.
Suggested/Recommended/Usage/Directions

Suggested use: As a dietary supplement, take two (2) capsules daily. For best results, take one (1) capsule during the day and one (1) capsule in the evening. Repeat the process daily. Do not exceed two capsules two per day.

Precautions

Caution: Do not exceed recommended dose.

Pregnant or nursing mothers, children under the age of 18, and individuals with a known medical condition should consult a physician before using this or any dietary supplement.

Pregnant or nursing mothers, children under the age of 18, and individuals with a known medical condition should consult a physician before using this or any dietary supplement.

Keep out of reach of children.

Do not use if safety seal is damaged or missing.

Storage

No refrigeration required Shelf stable

Store in a cool, dry place.

No refrigerating needed Shelf life stable

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.

Seals/Symbols

Formulated in USA GMP Good Manufacturing Practice Sourced from Certified Facility Third Party Tested

Formulation

Digestive health support

Survives stomach acids

Formula

Beneficial multi strains

FDA Statement of Identity

Dietary Supplement

Is this label outdated? Report a formula or label change and our pharmacy team will review it.

See for yourself

Probiotic 40 Billion CFU by Arazo Nutrition label

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

Probiotic 40 Billion CFU label

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)
What’s inside

The Ingredients in Probiotic 40 Billion CFU by Arazo Nutrition

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

Serving size2 Capsule(s) Dosage formCapsule 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.

Proprietary Blend of Probiotic Bacteria

0 NP per serving

Other (inactive) ingredients: Cellulose, Rice Dextrin, L-Leucine. These complete the product’s ingredient list but are not active constituents.

Interaction report

Probiotic 40 Billion CFU by Arazo Nutrition Drug Interactions

Want to check YOUR meds against Probiotic 40 Billion CFU?

Ask about interactions with your drugs in plain English — “Can I take it with lisinopril?” — and we find you the answer in seconds, ingredient by ingredient.

 Go to the checker
182Drugs
182 Moderate

Ingredients driving the most interactions

Lactobacillus acidophilus (La-14) 182

Individual Drug Interactions

The ingredients in Probiotic 40 Billion CFU interact with 182 drugs. Click any drug to see the details.

1 of the 6 ingredients in Probiotic 40 Billion CFU interact with drugs. Each result below shows which ingredient is responsible. Lactobacillus acidophilus (La-14)

Each ingredient & the kinds of drugs it affects

For each ingredient in Probiotic 40 Billion CFU with known interactions, here are the types of medications it can affect. Open any type for the detail — or search your exact drug in the checker above.

Lactobacillus acidophilus (La-14)1 drug type · 182 drugs

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.

Likelihood Probable Evidence D
Lactobacillus acidophilus (La-14) full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Probiotic 40 Billion CFU, from the product label.

Arazo Nutrition

See all Arazo Nutrition products
Name
Arazo Nutrition
Street Address
3422 Old Capitol Trail Suite #941
City
Wilmington
State
DE
ZipCode
19808
Web Address
www.ArazoNutrition.com
Pharmacist Counseling Corner

Probiotic 40 Billion CFU by Arazo Nutrition: Common Questions

Does Probiotic 40 Billion CFU by Arazo Nutrition interact with any medications?
Yes. Based on its ingredients, Probiotic 40 Billion CFU has a known interaction with 182 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Probiotic 40 Billion CFU contains 6 active ingredients, and an interaction can come from any of them. We check every ingredient, combine the results into one list per medication, and show which ingredient and mechanism is responsible.
Where does this information come from?
The product label data comes from the NIH Dietary Supplement Label Database (DSLD); the interaction data is built on the Natural Medicines database and reviewed by HelloPharmacist pharmacists.
Will this probiotic work if I'm on antibiotics?
Not as well if you take them at the same time. Antibiotics kill bacteria—including the live organisms in this probiotic. Space out your doses; your doctor or pharmacist can tell you how many hours apart to take them.
What side effects might I notice?
Gas, bloating, and abdominal pain are the most common, especially when you first start or at higher doses. These are usually mild. A small rash with itching has been reported in a trial, though it's unclear whether it was due to this probiotic or something else in the product.
Is this safe if I'm pregnant?
Lactobacillus acidophilus is rated possibly safe in pregnancy, but we don't have full safety data on the other ingredients. Talk with your doctor or pharmacist about whether this product is right for you during pregnancy.
What is fructooligosaccharide, and why is it in here?
It's a prebiotic—a fiber that feeds the beneficial bacteria in the product so they can thrive in your gut. At the doses used in probiotics, it's well tolerated, though it can cause gas and bloating in some people.
Does this probiotic actually work?
Lactobacillus acidophilus has evidence it may help with IBS, antibiotic-associated diarrhea, Helicobacter pylori, and bacterial vaginosis. For the other strains and ingredients, the evidence is too limited or hasn't been established in our records.

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

Not sure if Probiotic 40 Billion CFU is safe with your meds?

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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.

Probiotic 40 Billion CFU label
Go deeper

The Full Monographs Behind Probiotic 40 Billion CFU’s Ingredients

Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.

Herb & supplement monograph

Fructo-oligosaccharides (fos)

Fructo-oligosaccharides (FOS) are a type of soluble fiber that acts as a prebiotic, meaning they feed the helpful bacteria in your gut. They are generally considered safe for most people in...

Read the full Fructo-oligosaccharides (fos) monograph → Herb & supplement monograph

Lactobacillus Acidophilus

Interacts with 182 drugs

Lactobacillus 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

Sources & How We Checked

Probiotic 40 Billion CFU's label data comes from the NIH Dietary Supplement Label Database; the ingredient interaction data is from the Natural Medicines database, reviewed by our pharmacists.

Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.

The 21 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.

Fructo-oligosaccharides (fos) 6 references
  1. Briet F, et al. Symptomatic response to varying levels of fructo-oligosaccharides consumed occasionally or regularly. Eur J Clin Nutr 1995;49:501-7.
  2. Bouhnik Y, Vahedi K, Achour L, et al. Short-chain fructo-oligosaccharide administration dose-dependently increases fecal bifidobacteria in healthy humans. J Nutr 1999;129:113-6. PubMed
  3. Cummings JH, Macfarlane GT, Englyst HN. Prebiotic digestion and fermentation. Am J Clin Nutr 2001;73:415S-420S. PubMed
  4. Souza DDS, Tahan S, Weber TK, Araujo-Filho HB, de Morais MB. Randomized, double-blind, placebo-controlled parallel clinical trial assessing the effect of fructooligosaccharides in infants with constipation. Nutrients. 2018;10(11). pii: E1602. PubMed
  5. Andermann TM, Fouladi F, Tamburini FB, et al. A Fructo-Oligosaccharide Prebiotic Is Well Tolerated in Adults Undergoing Allogeneic Hematopoietic Stem Cell Transplantation: A Phase I Dose-Escalation Trial. Transplant Cell Ther 2021;27(11):932. PubMed
  6. Dou Y, Yu X, Luo Y, Chen B, Ma D, Zhu J. Effect of Fructooligosaccharides Supplementation on the Gut Microbiota in Human: A Systematic Review and Meta-Analysis. Nutrients 2022;14(16):3298. PubMed

See these in context on the Fructo-oligosaccharides (fos) monograph →

Lactobacillus Acidophilus 15 references
  1. Pierce A. The American Pharmaceutical Association Practical Guide to Natural Medicines. New York: The Stonesong Press, 1999:19.
  2. 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
  3. 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
  4. 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
  5. 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
  6. 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.
  7. 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
  8. 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
  9. 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.
  10. 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
  11. Ozer M, Goksu SY, Shahverdiani A, Mustafa M. Lactobacillus acidophilus-induced endocarditis and associated splenic abscess. Case Rep Infect Dis 2020;2020:1382709.
  12. 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
  13. 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
  14. 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.
  15. 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.

© 2021 Therapeutic Research Center, LLC

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