Interactions on record — worth a quick check against your medications. Based on 1 of 2 ingredients. Check your meds →
Dietary supplement

Respiratory Care Probiotic Ingredients & Drug Interactions

by NOW

Respiratory Care Probiotic label
See full label image
Capsule Category: Non-nutrient/non-botanical
Most serious interaction: Moderate
Clinical methodology reviewed by · Updated Sep 9, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Respiratory Care Probiotic 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

Respiratory Care Probiotic is a dietary supplement by NOW with 2 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 (NCFM). Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

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Check Your Meds Against Respiratory Care Probiotic by NOW

Ask about any prescription or over-the-counter medication and we check it for interactions with Respiratory Care Probiotic by NOW — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of Respiratory Care Probiotic by NOW

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 2 active ingredients.
  • “Blend of Probiotic Bacteria” is a proprietary blend — the label gives one combined amount (120 mg) without saying how much of each component you get.

Respiratory Care Probiotic contains 2 active ingredients: a blend of probiotic bacteria including Bifidobacterium lactis (BI-04) and Lactobacillus acidophilus (NCFM). These are live microorganisms intended to support your gut flora.

The capsule also contains inactive ingredients — microcrystalline cellulose, hypromellose, magnesium stearate, and silicon dioxide — which are common binders and fillers.

Does it work?

Insufficient 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
Insufficient

There isn't enough reliable clinical evidence to rate this product's ingredients for its stated purpose.

Why this rating?
  • The label markets this product for: support robust respiratory and immune health.
  • We looked for evidence on: Respiratory tract infections, Acute respiratory distress syndrome (ARDS), Asthma, Allergic rhinitis (hay fever), Bronchopulmonary dysplasia, Ventilator-associated pneumonia (VAP) — and 4 related terms.
  • The closest evidence on file: Lactobacillus Acidophilus is rated "Insufficient Reliable Evidence To Rate" for Acute respiratory distress syndrome (ARDS) (Natural Medicines).
  • Also on file: Lactobacillus Acidophilus is rated "Insufficient Reliable Evidence To Rate" for Allergic rhinitis (hay fever), Asthma, Bronchopulmonary dysplasia, Respiratory tract infections, and more.

The evidence we hold covers Lactobacillus acidophilus for several conditions. It's rated possibly effective for irritable bowel syndrome (IBS), Helicobacter pylori infection, antibiotic-associated diarrhea, and bacterial vaginosis.

For atopic disease (allergic conditions), the evidence suggests it may not be effective. For acute respiratory distress syndrome (ARDS), the research isn't solid enough to rate it either way yet.

We don't have effectiveness data on file for Bifidobacterium lactis.

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.

Lactobacillus acidophilus is generally well tolerated in healthy adults and children. That said, because it's a live organism, there's a theoretical concern it could cause infection in certain patients — cases of bacteremia (bacteria in the bloodstream) and other serious infections have been reported, though most happened in people with other underlying conditions.

On the practical side, some people experience mild digestive upset like bloating, gas, or stomach discomfort when starting a probiotic, but these are uncommon. If you have a weakened immune system or serious illness, talk with your doctor before using it.

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.

Before you take this, check your antibiotic medications with the tool below — taking them at the same time as this probiotic may reduce its effectiveness. Space doses apart by a few hours and confirm the timing with your pharmacist or doctor.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFormula with limited ingredient disclosure with insufficient evidence for its stated purpose. Moderate medication interactions have been identified, and safety information is well characterized.

This probiotic is an option if you're interested in supporting your digestive health, especially if you're dealing with IBS or are about to take antibiotics. The key thing to remember: don't take it at the same time as antibiotics — space them out.

If you have a compromised immune system or are seriously ill, 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 2 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Jul 25, 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 Respiratory Care Probiotic, straight from the product label.

Brand NOW
Barcode (UPC) 733739029096
Net contents 60 Veg Capsule(s)
Market status On market
Date entered into DSLD Jul 25, 2024
DSLD ID 314021
Product type Non-nutrient/non-botanical
Supplement form Capsule
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Children 4 or More Years of Age, Vegan, Vegetarian, Adult (18 - 50 Years), Kosher, Gluten Free
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 Respiratory Care Probiotic by NOW, 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 Veg Capsule(s)
Maximum serving Sizes:
1 Veg Capsule(s)
Servings per container
60
UPC/BARCODE
733739029096
IngredientAmount% DV
Blend of Probiotic Bacteria120 mg--
Bifidobacterium lactis (BI-04)0 NP--
Lactobacillus acidophilus (NCFM)0 NP--

Other ingredients: Microcrystalline Cellulose, Hypromellose, Magnesium Stearate, Silicon Dioxide

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 Usage: Take 1 capsule 1 to 2 times daily. For children (age 4 & up), take 1 capsule daily, or capsule can be opened and added to food or beverage.

Storage

Store in a cool, dry place to maintain potency.

Formula

NOW Respiratory Care Probiotic is a probiotic combination featuring L. acidophilus NCFM, which has been used in over 60 scientific studies. When used alone or in combination with B. lactis Bl-04, NCFM has been shown to support a robust, but balanced, immune response to seasonal respiratory challenges, as well as to support an active lifestyle. NCFM can rapidly populate the intestine and adhere to the intestinal wall, which is helpful for use during and after temporary disruptions to intestinal microbiota.

Triangle K (Kosher)

Respiratory Care Probiotic with clinically tested NCFM & BI-04

Ideal for children and active adults

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.

Precautions

Caution: Consult physician if pregnant/nursing, taking medication (especially immune-suppressing drugs), or have a medical condition (especially if immune system is compromised).

Not intended for use by children under 4. Keep out of reach of children.

Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish, tree nut or sesame ingredients. Produced in a GMP facility that processes other ingredients containing these allergens.

Formulation

The probiotic strains in this product have been identity-verified using DNA-fingerprinting technology.

Seasonal respiratory support

Non-GMO

Vegetarian/Vegan

Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish, tree nut or sesame ingredients.

Made and quality tested in the USA with globally sourced ingredients.

Seals/Symbols

Triangle K (Kosher)

Strain Verified

GMP Quality Assured

FDA Statement of Identity

A Dietary Supplement

General Statements

Digestive Family owned since 1968.

Brand IP Statement(s)

NCFM is a registered trademark of the North Carolina Agricultural Foundation, Inc. and is used under license.

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

See for yourself

Respiratory Care Probiotic by NOW label

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

Respiratory Care Probiotic 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 Respiratory Care Probiotic by NOW

These are the 2 active ingredients this product is made of. Select any to open its full monograph.

Serving size1 Veg Capsule(s) Dosage formCapsule Servings per container60 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.

Blend of Probiotic Bacteria

120 mg per serving

Other (inactive) ingredients: Microcrystalline Cellulose, Hypromellose, Magnesium Stearate, Silicon Dioxide. These complete the product’s ingredient list but are not active constituents.

Interaction report

Respiratory Care Probiotic by NOW Drug Interactions

Want to check YOUR meds against Respiratory Care Probiotic?

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 (NCFM) 182

Individual Drug Interactions

The ingredients in Respiratory Care Probiotic interact with 182 drugs. Click any drug to see the details.

1 of the 2 ingredients in Respiratory Care Probiotic interact with drugs. Each result below shows which ingredient is responsible. Lactobacillus acidophilus (NCFM)

Each ingredient & the kinds of drugs it affects

For each ingredient in Respiratory Care Probiotic 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 (NCFM)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 (NCFM) full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Respiratory Care Probiotic, from the product label.

NOW

See all NOW products
Name
NOW Foods
Street Address
395 S. Glen Ellyn Rd.
City
Bloomingdale
State
IL
ZipCode
60108
Web Address
nowfoods.com
Pharmacist Counseling Corner

Respiratory Care Probiotic by NOW: Common Questions

Does Respiratory Care Probiotic by NOW interact with any medications?
Yes. Based on its ingredients, Respiratory Care Probiotic 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?
Respiratory Care Probiotic contains 2 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 probiotic while I'm on antibiotics?
You can, but not at the same time. Antibiotics can kill the live organisms in this supplement, which reduces how well it works. Talk to your pharmacist about spacing them — usually a few hours between doses is enough.
What are Bifidobacterium lactis and Lactobacillus acidophilus?
They're types of beneficial bacteria — probiotics — meant to support your gut health. Lactobacillus acidophilus has evidence supporting its use for IBS, antibiotic-related diarrhea, and a few other digestive issues. We don't have effectiveness data on file for Bifidobacterium lactis.
Will this upset my stomach?
Most people tolerate it fine. A small number of people report mild digestive side effects like bloating, gas, or stomach discomfort when they start, but that's uncommon and usually temporary.
Is this safe if I have a weakened immune system?
This is something to ask your doctor about. While serious infections from L. acidophilus are rare, they've been reported — mostly in people who were already very ill. Your doctor can advise based on your situation.
What's inside the capsule besides the probiotics?
The inactive ingredients are microcrystalline cellulose, hypromellose, magnesium stearate, and silicon dioxide — all standard binders and fillers that help hold the capsule together.

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

Not sure if Respiratory Care Probiotic is safe with your meds?

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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.

Respiratory Care Probiotic label
Go deeper

The Full Monographs Behind Respiratory Care Probiotic’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

Respiratory Care Probiotic'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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