Interactions on record — worth a quick check against your medications. Based on 1 of 5 ingredients. Check your meds →
Dietary supplement

Oral Probiotic Formula Natural Strawberry Flavor Ingredients & Drug Interactions

by Swanson

Oral Probiotic Formula Natural Strawberry Flavor label
See full label image
Tablet Or Pill Category: Non-nutrient/non-botanical
Most serious interaction: Moderate
Clinical methodology reviewed by · Updated Sep 30, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Oral Probiotic Formula Natural Strawberry Flavor 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

Oral Probiotic Formula Natural Strawberry Flavor is a dietary supplement by Swanson with 5 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 L. acidophilus. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

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Check Your Meds Against Oral Probiotic Formula Natural Strawberry Flavor by Swanson

Ask about any prescription or over-the-counter medication and we check it for interactions with Oral Probiotic Formula Natural Strawberry Flavor by Swanson — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of Oral Probiotic Formula Natural Strawberry Flavor by Swanson

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 Jul 11, 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 5 active ingredients.
  • “Oral Probiotic Formula Proprietary Blend” is a proprietary blend — the label doesn't break down how much of each component you get.

This formula has 5 active ingredients, all probiotics (beneficial bacteria). The main one we have data for is L. acidophilus, a strain designed to support your gut.

The other four — L. paracasei, L. plantarum, L. reuteri, and BLIS K12 — are additional probiotic strains that round out the blend. The tablet also contains inactive ingredients like xylitol (a sweetener), chicory fiber, microcrystalline cellulose, rice extract, and natural strawberry and vanilla flavoring.

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
Moderate

Some clinical evidence supports this product's ingredients for its stated purpose, but it isn't conclusive.

Why this rating?
  • The label markets this product for: Oral probiotic supplement for digestive health.
  • We looked for evidence on: Antibiotic-associated diarrhea, Bacterial vaginosis, Clostridioides difficile infection, Constipation, Inflammatory bowel disease (IBD), Irritable bowel syndrome (IBS) — and 4 related terms.
  • The strongest evidence on file: Lactobacillus Acidophilus is rated "Possibly Effective" for Antibiotic-associated diarrhea (Natural Medicines).
  • Also on file: Lactobacillus Acidophilus is rated "Possibly Effective" for Bacterial vaginosis, Irritable bowel syndrome (IBS).
  • Also on file: Lactobacillus Acidophilus is rated "Insufficient Reliable Evidence To Rate" for Constipation, Inflammatory bowel disease (IBD), Lactose intolerance, Rotaviral diarrhea.

L. acidophilus is possibly effective for irritable bowel syndrome (IBS), Helicobacter pylori infection, antibiotic-associated diarrhea, and bacterial vaginosis. The evidence for the other strains in this formula isn't established in the data we hold.

The product does contain live, active organisms, so effectiveness depends on keeping those microorganisms alive — which is why timing away from antibiotics matters.

The evidence, ingredient by ingredient 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 1 of the 1 matched ingredient.
  • Pregnancy & breastfeeding safety ratings cover 1 of 1.
  • General safety write-ups exist for 1 of 1.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

L. acidophilus is generally well tolerated in healthy adults and children. The most common side effects from probiotic combinations are mild and gut-related — abdominal pain, gas, bloating, or diarrhea — but these are uncommon.

There's a theoretical concern that live probiotic organisms could cause serious infections in people with compromised immune systems or certain underlying conditions; ask your doctor before starting if you have any health concerns. We don't have pregnancy or breastfeeding safety data on file for these ingredients.

Side effects, ingredient by ingredient 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 1 matched ingredient 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.

Separate this product from antibiotics (Moderate interaction) — timing them hours apart helps the probiotic stay effective. Use the checker below for your exact medications, since we hold no interaction data for four of the five active strains.

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 for its stated purpose. Moderate medication interactions have been identified, and safety information is well characterized.

This is a standard probiotic formula possibly helpful for IBS, antibiotic-related diarrhea, and a few other digestive or bacterial issues. The main thing to watch: separate it from antibiotics by a few hours so the bacteria stay alive and can work.

If you're immunocompromised or have serious underlying health issues, check with your doctor first.

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

Assessment coverage: 1 of 5 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Dec 21, 2024.

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 Oral Probiotic Formula Natural Strawberry Flavor, straight from the product label.

Brand Swanson
Barcode (UPC) 087614210247
Net contents 30 Chewable Tablet(s)
Market status On market
Date entered into DSLD Dec 21, 2024
DSLD ID 322740
Product type Non-nutrient/non-botanical
Supplement form Tablet Or Pill
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 Oral Probiotic Formula Natural Strawberry Flavor by Swanson, 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:
1 Chewable Tablet(s)
Maximum serving Sizes:
1 Chewable Tablet(s)
Servings per container
30
UPC/BARCODE
087614210247
IngredientAmount% DV
L. acidophilus0 NP--
L. paracasei0 NP--
L. plantarum0 NP--
L. reuteri0 NP--
Oral Probiotic Formula Proprietary Blend0 NP--
BLIS K120 NP--

Other ingredients: Xylitol, Chicory, Microcrystalline Cellulose, Rice extract Blend, Hydroxypropyl Cellulose, Guar Gum, Beet Juice, Powder, Vanilla Flavor, Natural, Strawberry Flavor, Natural, Citric Acid, Rebaudioside A, Maltodextrin

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.
Brand IP Statement(s)

BLIS K12 is a registered trademark and logo of BLIS Technologies, Ltd., New Zealand.

Formula

BLIS K12

3 Billion CFU

Suggested/Recommended/Usage/Directions

Suggested use: As a dietary supplement, chew and dissolve one tablet in mouth per day.

Storage

For best results, keep refrigerated.

Store in a cool, dry place.

Precautions

Warning: For adults only.

Consult your physician before using this or any product if you are pregnant or nursing, taking medication or have a medical condition.

Keep out of reach of children.

Do not use if seal is broken.

Contains milk.

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.

Formulation

Oral and Immune Health

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

Oral Probiotic Formula Natural Strawberry Flavor by Swanson label

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

Oral Probiotic Formula Natural Strawberry Flavor 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 Oral Probiotic Formula Natural Strawberry Flavor by Swanson

These are the 5 active ingredients this product is made of. Select any to open its full monograph.

Serving size1 Chewable Tablet(s) Dosage formTablet Or Pill 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.

Oral Probiotic Formula Proprietary Blend

0 NP per serving
  • › L. acidophilus
  • › L. paracasei
  • › L. plantarum
  • › L. reuteri
  • › BLIS K12

Other (inactive) ingredients: Xylitol, Chicory, Microcrystalline Cellulose, Rice extract Blend, Hydroxypropyl Cellulose, Guar Gum, Beet Juice, Powder, Vanilla Flavor, Natural, Strawberry Flavor, Natural, Citric Acid, Rebaudioside A, Maltodextrin. These complete the product’s ingredient list but are not active constituents.

Interaction report

Oral Probiotic Formula Natural Strawberry Flavor by Swanson Drug Interactions

Want to check YOUR meds against Oral Probiotic Formula Natural Strawberry Flavor?

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

L. acidophilus 182

Individual Drug Interactions

The ingredients in Oral Probiotic Formula Natural Strawberry Flavor interact with 182 drugs. Click any drug to see the details.

1 of the 5 ingredients in Oral Probiotic Formula Natural Strawberry Flavor interact with drugs. Each result below shows which ingredient is responsible. L. acidophilus

Each ingredient & the kinds of drugs it affects

For each ingredient in Oral Probiotic Formula Natural Strawberry Flavor 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.

L. acidophilus1 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
L. acidophilus full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Oral Probiotic Formula Natural Strawberry Flavor, from the product label.

Swanson

See all Swanson products
Name
Swanson Health Products
City
Fargo
State
ND
ZipCode
58104
Phone Number
1-800-437-4148
Web Address
www.swanson.com
Pharmacist Counseling Corner

Oral Probiotic Formula Natural Strawberry Flavor by Swanson: Common Questions

Does Oral Probiotic Formula Natural Strawberry Flavor by Swanson interact with any medications?
Yes. Based on its ingredients, Oral Probiotic Formula Natural Strawberry Flavor 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?
Oral Probiotic Formula Natural Strawberry Flavor contains 5 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.
Can I take this with my antibiotic?
Not at the same time. Antibiotics can kill the live bacteria in this formula, making it less effective. Ask your pharmacist how many hours to space them apart — usually a few hours is enough.
Is this safe if I'm pregnant or breastfeeding?
We don't have safety data on file for these specific probiotic strains in pregnancy or lactation. Talk with your doctor or pharmacist about whether it's right for you.
What's this formula actually for?
L. acidophilus in this product is possibly effective for irritable bowel syndrome, antibiotic-related diarrhea, Helicobacter pylori, and bacterial vaginosis. The other strains are included to broaden the probiotic benefit, but we don't have solid evidence for them yet.
Can I get side effects from this?
Most people tolerate it well. Some people — not many — notice mild bloating, gas, abdominal pain, or loose stool when they first start probiotics. These usually pass.
Does this have a lot of fillers?
It has several inactive ingredients like xylitol, chicory fiber, rice extract, and cellulose that help hold the tablet together and improve taste. That's pretty standard for probiotic formulas.

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

Not sure if Oral Probiotic Formula Natural Strawberry Flavor is safe with your meds?

Our pharmacists answer your medication & supplement questions — free.

Ask a pharmacist

Label information is sourced from the NIH Dietary Supplement Label Database and reflects the product version on file; always read your actual product label. This page is for education only and is not a substitute for professional medical advice. Confirm with your pharmacist or doctor before combining supplements and medications.

Oral Probiotic Formula Natural Strawberry Flavor label
Go deeper

The Full Monographs Behind Oral Probiotic Formula Natural Strawberry Flavor’s Ingredients

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

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

Oral Probiotic Formula Natural Strawberry Flavor'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 15 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
  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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