Interactions on record — worth a quick check against your medications. Based on 3 of 5 ingredients. Check your meds →
Dietary supplement

Mega Acidophilus Ingredients & Drug Interactions

by Wonder Labs

Capsule Category: Other Combinations
Most serious interaction: Moderate
The interaction bottom line Most serious interaction: Moderate

Mega Acidophilus is a dietary supplement by Wonder Labs with 5 active ingredients. Its ingredients are commonly taken for diarrhea relief, constipation and digestive health, cholesterol support.Based on those ingredients, 188 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Lactobacillus acidophilus, Lactobacillus helveticus, Citrus Pectin. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

HelloPharmacist Scorecard of Mega Acidophilus by Wonder Labs

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

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 1 of its 5 active ingredients.
  • “Proprietary Blend of Cultures” is a proprietary blend — the label gives one combined amount (80 mg) without saying how much of each component you get.

Mega Acidophilus contains five active probiotic and prebiotic ingredients. The product includes three Lactobacillus species—acidophilus, helveticus, and salivarius—which are beneficial bacteria meant to support digestive health.

It also contains Bifidobacterium animalis lactis, another helpful probiotic strain, and Citrus Pectin, a soluble fiber that acts as a prebiotic (food for the good bacteria). The capsules are made with vegetable cellulose and include vegetable magnesium stearate, ascorbic acid, and silica as inactive ingredients.

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: Digestive health and bacterial balance support.
  • We looked for evidence on: Antibiotic-associated diarrhea, Bacterial vaginosis, Clostridioides difficile infection, Constipation, Diarrhea, Helicobacter pylori — 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, Helicobacter pylori, Irritable bowel syndrome (IBS).
  • Also on file: Pectin is rated "Insufficient Reliable Evidence To Rate" for Diarrhea, Irritable bowel syndrome (IBS), Peptic ulcers.

The evidence supporting this product's ingredients is mixed. Lactobacillus acidophilus is possibly effective for irritable bowel syndrome, Helicobacter pylori infection, antibiotic-associated diarrhea, and bacterial vaginosis.

Citrus Pectin is possibly effective for high cholesterol. However, we have no reliable evidence that Lactobacillus helveticus works for any of the conditions tested—allergic rhinitis, antibiotic-associated diarrhea, cognitive function, depression, rotaviral diarrhea, and exercise-induced respiratory infections all fall short of established proof.

Effectiveness data isn't on file for Bifidobacterium animalis lactis or Lactobacillus salivarius.

The evidence, ingredient by ingredient Pectin Lactobacillus Acidophilus Lactobacillus Helveticus

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 3 of the 3 matched ingredients.
  • Pregnancy & breastfeeding safety ratings cover 3 of 3.
  • General safety write-ups exist for 3 of 3.
  • 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. The most common side effects from probiotics are mild gastrointestinal symptoms—gas, bloating, abdominal pain, diarrhea, or burping—though these are uncommon.

A rare but serious concern with live probiotic bacteria is infection; cases of bacteremia, sepsis, and other infections have been reported, usually in people with already-compromised health or translocation from other body sites. Citrus Pectin is generally well tolerated, with occasional gas, loose stools, or mild cramps.

Rarely, sensitive individuals may have allergic reactions including anaphylaxis. Because limited safety data exist for these probiotics in pregnancy and lactation, check with your doctor or pharmacist before use if you are pregnant or breastfeeding.

Side effects, ingredient by ingredient Pectin Lactobacillus Acidophilus Lactobacillus Helveticus

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?
  • 3 of the 3 matched ingredients can interact with medications — Pectin, Lactobacillus Acidophilus, Lactobacillus Helveticus.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: heart-rhythm medications.
  • For scale: 188 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 start Mega Acidophilus, check with your doctor or pharmacist if you take any antibiotic drugs (Moderate risk—the probiotics are live organisms and antibiotics can kill them), digoxin or Lanoxin (Moderate risk—pectin may reduce absorption), lovastatin or Mevacor (Moderate risk—pectin may lower its effectiveness), or tetracycline antibiotics (Moderate risk—pectin may reduce absorption). Your healthcare provider can advise whether to space out doses or choose a different approach.

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.

Mega Acidophilus may help with certain digestive conditions, especially irritable bowel syndrome and antibiotic-associated diarrhea, though the evidence for some ingredients is limited or absent. If you take antibiotics, digoxin, lovastatin, or tetracycline antibiotics, this product could reduce how well those medications work—separate timing or avoid it altogether, and talk it over with your doctor or pharmacist before starting.

People who are seriously ill or immunocompromised should also check with their healthcare provider first.

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

Assessment coverage: 3 of 5 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Dec 18, 2021.

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 Mega Acidophilus, straight from the product label.

Brand Wonder Labs
Barcode (UPC) 099528942053
Net contents 500 Vegetable Capsule(s)
Market status On market
Date entered into DSLD Dec 18, 2021
DSLD ID 262369
Product type Other Combinations
Supplement form Capsule
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years), Gluten Free, Sugar 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 Mega Acidophilus by Wonder Labs, 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 Vegetable Capsule(s)
Maximum serving Sizes:
2 Vegetable Capsule(s)
Servings per container
250
UPC/BARCODE
099528942053
IngredientAmount% DV
Lactobacillus acidophilus0 NP--
Bifidobacterium animalis lactis0 NP--
Citrus Pectin200 mg--
Lactobacillus helveticus0 NP--
Lactobacillus salivarius0 NP--
Proprietary Blend of Cultures80 mg--

Other ingredients: Vegetable Cellulose, Vegetable Magnesium Stearate, L-Ascorbic Acid, Silica

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

Directions: As a dietary supplement, take 2 vegetable capsules daily, preferably with a meal. 6 billion good bacteria per 2 capsules serving at time of manufacture.

Precautions

Tamper Evident: Do not use this product if imprinted for seal under cap is broken or missing.

Keep out of reach of children.

Caution: If you are pregnant or nursing, consult your physician before taking this product.

Contains milk ingredients

Storage

Keep tightly closed. Refrigerate after opening

Formulation

Contain no artificial color, flavor or sweetener, no preservatives, no sugar, no starch, no soy, no gluten, no wheat, no fish. Sodium free. Non-GMO Gluten free

Nutritionally supports healthy intestinal flora

Seals/Symbols

FDA Registered Facility GMP Certified Good Manufacturing Practice USA Made

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.

Formula

6 billion good bacteria Freeze-Dried Probiotic with Pectin

FDA Statement of Identity

Dietary Supplement

Brand IP Statement(s)

Home of the World Famous Valerin

See for yourself

Mega Acidophilus by Wonder Labs label

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

What’s inside

The Ingredients in Mega Acidophilus by Wonder Labs

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

Serving size2 Vegetable Capsule(s) Dosage formCapsule Servings per container250 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.

Citrus Pectin

Interacts with
23 drugs
200 mg per serving

Pectin is a natural soluble fiber found in fruits like apples and citrus, and it is widely used in foods and as a fiber supplement. It may modestly he...

Citrus Pectin monograph & interactions

Proprietary Blend of Cultures

80 mg per serving

Other (inactive) ingredients: Vegetable Cellulose, Vegetable Magnesium Stearate, L-Ascorbic Acid, Silica. These complete the product’s ingredient list but are not active constituents.

Interaction report

Mega Acidophilus by Wonder Labs Drug Interactions

Want to check YOUR meds against Mega Acidophilus?

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
188Drugs
188 Moderate

Ingredients driving the most interactions

Each ingredient & the kinds of drugs it affects

For each ingredient in Mega Acidophilus 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 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

Lactobacillus helveticus1 drug type · 182 drugs

Antibiotic Drugs

Theoretically, taking Lactobacillus helveticus with antibiotic drugs might decrease the effectiveness of L. helveticus.
Lactobacillus helveticus 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. helveticus preparations by at least two hours.

Likelihood Probable Evidence D

Citrus Pectin3 drug types · 23 drugs

Digoxin (Lanoxin)

Theoretically, pectin might reduce the absorption of digoxin, potentially decreasing its effectiveness.
A small clinical study shows that taking digoxin with a kaolin-pectin suspension reduces the absorption of digoxin by about 62%. It is unclear if these effects are due to pectin, kaolin, or the combination.

Likelihood Possible Evidence B
Lovastatin (Mevacor)

Theoretically, pectin might reduce the absorption of lovastatin, potentially decreasing its effectiveness.
Case reports suggest that concomitant use of pectin and lovastatin might reduce the cholesterol-lowering effect of lovastatin, possibly due to reduced intestinal absorption of lovastatin.

Likelihood Possible Evidence D
Tetracycline Antibiotics

Theoretically, pectin might reduce the absorption of tetracycline antibiotics, potentially decreasing their effectiveness.
A small clinical study shows that taking tetracycline with bismuth subsalicylate in a kaolin-pectin suspension reduces the absorption of tetracycline by about 34%. It is unclear if these effects are due to pectin, kaolin, bismuth subsalicylate, or the combination.

Likelihood Possible Evidence B
The maker

Brand information

Manufacturer and brand details for Mega Acidophilus, from the product label.

Wonder Labs

See all Wonder Labs products
Name
Wonder Labs
Street Address
115 S.C.T. Court
City
White House
State
TN
ZipCode
37188
Phone Number
800.992.1672
Web Address
www.wonderlabs.com
Pharmacist Counseling Corner

Mega Acidophilus by Wonder Labs: Common Questions

Does Mega Acidophilus by Wonder Labs interact with any medications?
Yes. Based on its ingredients, Mega Acidophilus has a known interaction with 188 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Mega Acidophilus 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 antibiotics?
Not at the same time. Both Lactobacillus acidophilus and Lactobacillus helveticus are live bacteria, and antibiotics will kill them and make the probiotic less effective. Ask your doctor or pharmacist about spacing doses apart—typically several hours apart—or waiting until your antibiotic course is finished before starting the probiotic.
Will this help with my irritable bowel syndrome or IBS?
Lactobacillus acidophilus in this product is possibly effective for IBS. That means some evidence supports it, but the research isn't conclusive. Results vary from person to person, so give it time and discuss expectations with your doctor.
What are the most common side effects?
Mild gastrointestinal symptoms—gas, bloating, abdominal discomfort, diarrhea, or burping—are uncommon but possible when you first take probiotics. These usually settle down. Rarely, sensitive people may have an allergic reaction to pectin.
Is it safe to take this if I'm pregnant?
Lactobacillus acidophilus is possibly safe in pregnancy. Citrus Pectin in concentrated supplement form hasn't been well studied in pregnancy. Since safety data are limited, talk with your doctor or pharmacist before taking this product if you're pregnant or planning to become pregnant.
Can I take this if I'm breastfeeding?
Safety data for these ingredients during breastfeeding are limited. Check with your doctor or pharmacist before starting to make sure it's appropriate for your situation.
Does this contain any fillers or other inactive ingredients?
Yes. The capsule is made of vegetable cellulose and contains vegetable magnesium stearate, L-ascorbic acid (vitamin C), and silica as inactive ingredients. If you're sensitive to any of these, let your pharmacist know.

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

Not sure if Mega Acidophilus 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.

Mega Acidophilus label
Sources

Sources & How We Checked

Mega Acidophilus'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 28 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 →

Pectin 11 references
  1. Jaakkola MS, et al. Asthma caused by occupational exposure to pectin. J Allergy Clin Immunol 1997;100:575-6. PubMed
  2. Westphal W, et al. [Exogenous allergic asthma following pectin exposure-a new occupational allergen]. Pneumologie 1990;44(Suppl 1):337-8.
  3. Baldwin JL, et al. Pectin-induced occupational asthma. Chest 1993;104:1936-7. PubMed
  4. Cohen AJ, Forse MS, Tarlo SM. Occupational asthma caused by pectin inhalation during the manufacture of jam. Chest 1993;103:309-11.
  5. Kraut A, et al. Christmas candy maker's asthma. IgG4-mediated pectin allergy. Chest 1992;102:1605-7. PubMed
  6. Richter WO, Jacob BG, Schwandt P. Interaction between fibre and lovastatin. Lancet 1991;338:706.
  7. Albert KS, Ayres JW, DiSanto AR, et al. Influence of kaolin-pectin suspension on digoxin bioavailability. J Pharm Sci 1978;67:1582-6. PubMed
  8. Albert KS, Welch RD, DeSante KA, et al. Decreased tetracycline bioavailability caused by a bismuth subsalicylate antidiarrheal mixture. J Pharm Sci 1979;68:586-8. PubMed
  9. Electronic Code of Federal Regulations. Title 21. Part 182 -- Substances Generally Recognized As Safe. Available at: https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/CFRSearch.cfm?CFRPart=182
  10. Federal Register April 17,2003. Anti-Diarrheal Products for over-the-counter human use; final monograph. Available at: http://www.fda.gov/OHRMS/DOCKETS/98fr/03-9380.pdf (Accessed 27 December 2004).
  11. Washio K, Nakamura M, Sato N, et al. Anaphylaxis in a pectin- and cashew nut-allergic child caused by a citrus bath. Allergol Int 2022;71(1):155-157. PubMed

See these in context on the Pectin monograph →

Lactobacillus Helveticus 2 references
  1. Pierce A. The American Pharmaceutical Association Practical Guide to Natural Medicines. New York: The Stonesong Press, 1999:19.
  2. 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

See these in context on the Lactobacillus Helveticus 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

Keep exploring