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

Ultra Digest Ingredients & Drug Interactions

by Sundown Naturals

Ultra Digest label
See full label image
Capsule Category: Other Combinations
Most serious interaction: Moderate
Clinical methodology reviewed by · Updated Sep 23, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Ultra Digest 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

Ultra Digest is a dietary supplement by Sundown Naturals with 6 active ingredients. Its ingredients are commonly taken for sore throat and cough, heartburn and stomach upset, mouth ulcers and digestive complaints.Based on those ingredients, 1,186 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are GutGard Licorice extract, Lactobacillus acidophilus NCFM. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

Jump to a section

Check Your Meds Against Ultra Digest by Sundown Naturals

Ask about any prescription or over-the-counter medication and we check it for interactions with Ultra Digest by Sundown Naturals — and tell you which ingredient is responsible.

Pharmacist-reviewed data Checks every ingredient Answer in seconds
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HelloPharmacist Scorecard of Ultra Digest by Sundown Naturals

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 24, 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 2 of its 6 active ingredients.
  • “Proprietary Blend (Non-Nutrient/Non-Botanical)” is a proprietary blend — the label doesn't break down how much of each component you get.

Ultra Digest contains 6 active ingredients designed to support digestion. The product includes two strains of beneficial bacteria (probiotics): Lactobacillus acidophilus NCFM and two Bifidobacterium strains.

It also contains Alpha-Galactosidase, an enzyme that helps break down complex carbohydrates, and GutGard Licorice extract, which is a standardized form of licorice. There's also a proprietary blend listed as a non-nutrient, non-botanical ingredient.

The capsules are made from vegetable cellulose.

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: supports upper, mid and lower GI health.
  • We looked for evidence on: Antibiotic-associated diarrhea, Bacterial vaginosis, Clostridioides difficile infection, Constipation, Dyspepsia, 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: Lactobacillus Acidophilus is rated "Insufficient Reliable Evidence To Rate" for Constipation, Inflammatory bowel disease (IBD), Lactose intolerance.

Lactobacillus acidophilus is rated possibly effective for irritable bowel syndrome (IBS), Helicobacter pylori infection, antibiotic-associated diarrhea, and bacterial vaginosis. It's rated possibly ineffective for atopic disease (eczema and allergic conditions), and there isn't enough reliable evidence to rate it for acute respiratory distress syndrome.

The licorice extract in this product is rated possibly effective for canker sores and atopic dermatitis (eczema). For other conditions like asthma and Addison disease, there's insufficient evidence to rate it.

The effectiveness of the other ingredients — Alpha-Galactosidase, the Bifidobacterium strains, and the proprietary blend — is not established in the data we hold.

The evidence, ingredient by ingredient Licorice 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, though data are limited so you should check with your doctor before use. In rare cases, the live organisms in probiotic supplements can cause infection, though most documented cases occurred in patients already at high risk.

Gastrointestinal side effects like bloating, gas, abdominal discomfort, and diarrhea are uncommon but possible when taking probiotics. The licorice extract in this product is generally well tolerated in small amounts, but high doses or long-term use of licorice can cause serious problems because of its active compound glycyrrhizin.

Common side effects from licorice are headache, nausea, and vomiting. Licorice is unsafe in pregnancy due to links to harmful effects, and there isn't enough safety information to use it while breastfeeding — talk with your doctor or pharmacist if you're pregnant or nursing.

Side effects, ingredient by ingredient Licorice 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?
  • 2 of the 2 matched ingredients can interact with medications — Lactobacillus Acidophilus, Licorice.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: anticoagulant / antiplatelet drugs; heart-rhythm medications.
  • For scale: 1,187 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 Ultra Digest, check with your doctor or pharmacist about any digoxin (Lanoxin) you're on — licorice in this product may increase heart toxicity risk. Also discuss warfarin (Coumadin) or other blood thinners, as licorice may make them less effective.

If you take antibiotics, ask when to time them relative to this product — simultaneous use may reduce the probiotic's effectiveness. Finally, if you take any medications broken down by your liver's CYP450 system (including certain cancer drugs, sedatives, or other common medications), verify there's no interaction before combining them with this product.

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.

Ultra Digest may be worth considering if you're dealing with IBS, antibiotic-related diarrhea, or certain infections, and have no serious medication interactions. However, the licorice extract creates significant interactions with heart medications, blood thinners, certain cancer drugs, and several other medication types, and it's unsafe in pregnancy.

If you take digoxin, warfarin, or any medications that go through your liver's cytochrome P450 system, or if you take antibiotics regularly, talk with your doctor or pharmacist before starting this product.

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 Mar 24, 2017.

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 Ultra Digest, straight from the product label.

Brand Sundown Naturals
Barcode (UPC) 030768672386
Net contents 60 Capsule(s)
Market status On market
Date entered into DSLD Mar 24, 2017
DSLD ID 71812
Product type Other Combinations
Supplement form Capsule
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Vegetarian, Adult (18 - 50 Years), Gluten Free, Dairy 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 Ultra Digest by Sundown Naturals, 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 Capsule(s)
Maximum serving Sizes:
1 Capsule(s)
UPC/BARCODE
030768672386
IngredientAmount% DV
Alpha-Galactosidase120 mg--
Lactobacillus paracasei Lpc-370 NP--
Lactobacillus acidophilus NCFM0 NP--
Bifidobacterium lactis Bi-070 NP--
GutGard Licorice extract75 mg--
Proprietary Blend (Non-Nutrient/Non-Botanical)0 NP--
Bifidobacterium lactis Bl-040 NP--

Other ingredients: Vegetable Cellulose, Contains <2% of

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.
Formulation

Smart facts No artificial colors No preservatives

Vegetarian formula

100% free of No dairy/lactose No artificial flavors Non-GMO GF Certified gluten-free

Non-GMO. No gluten, no wheat, no milk, no lactose, no artificial color, no artificial flavor, no preservatives, no sugar, no soy, no yeast, no fish. Sodium free.

Brand IP Statement(s)

GutGard helps with occasional heartburn & sour stomach

NCFM is a registered trademark of The North Carolina Agricultural Foundation, Inc. DBA The North Carolina Dairy Foundation. Bl-04, Bl-07 and Lpc-37 are registered trademarks of Dupont Nutrition Biosciences APS. GutGard is a trademark of Natural Remedies, PVT. LTD.

2016

Sundown Naturals Ultra Digest gives you digestive support when and where you need it!

General Statements

Supports upper, mid & lower GI health

When being used as directed

Made in the USA with select ingredients from around the world

17 billion active cultures per day For occasional upset stomach, fullness & gas

New!

This multifaceted formula contains three key ingredients for comprehensive digestive support.

Support upper, mid and lower gastrointestinal health with Ultra Digest.

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

Keep out of reach of children.

Tamper Resistant: Do not use if seal under cap is broken or missing.

As a reminder, discuss the supplements and medications you take with your health care providers.

Warning: If you are pregnant, nursing, taking any medications or have any medical condition, consult your doctor before use.

Discontinue use and consult your doctor if any adverse reactions occur.

Storage

Store unopened container at room temperature and avoid excessive heat.

Refrigerate after opening

General

Prod. No. 67238 00A B67238

FDA Statement of Identity

Dietary Supplement

Seals/Symbols

No dairy/lactose

No artificial flavors

Non-GMO

GF Certified gluten-free

Suggested/Recommended/Usage/Directions

Directions: For adults, take one (1) capsule two times daily, preferably with water after a meal.

Formula

With Gutgard licorice extract

GutGard contains deglycyrrhizinated licorice (DGL), that starts working in the stomach to relieve occasional sour stomach, heartburn and fullness.

The enzyme alpha-galactosidase helps break down carbohydrates in the small intestines to reduce the production of gas, while a blend of probiotics support digestive health by contributing to the healthy gut flora in the large intestines.

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

See for yourself

Ultra Digest by Sundown Naturals label

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

Ultra Digest 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 Ultra Digest by Sundown Naturals

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

Serving size1 Capsule(s) Dosage formCapsule Amounts shown are per serving.

Most supplement products combine several ingredients, and a medication can interact with the product through any one of them. Each ingredient below shows whether it has known drug interactions.

Alpha-Galactosidase

120 mg per serving Form: Aspergillus niger

GutGard Licorice extract

Interacts with
1,040 drugs
75 mg per serving

Licorice root is a traditional remedy used for sore throats, coughs, and digestive complaints, but solid human evidence is limited for most uses. Regu...

GutGard Licorice extract monograph & interactions

Proprietary Blend (Non-Nutrient/Non-Botanical)

0 NP per serving

Other (inactive) ingredients: Vegetable Cellulose, Contains <2% of. These complete the product’s ingredient list but are not active constituents.

Interaction report

Ultra Digest by Sundown Naturals Drug Interactions

Want to check YOUR meds against Ultra Digest?

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
1,186Drugs
1,124 Moderate 62 Minor

Ingredients driving the most interactions

GutGard Licorice extract 1,040
Lactobacillus acidophilus NCFM 182

Individual Drug Interactions

The ingredients in Ultra Digest interact with 1,186 drugs. Click any drug to see the details.

2 of the 6 ingredients in Ultra Digest interact with drugs. Each result below shows which ingredient is responsible. GutGard Licorice extract Lactobacillus acidophilus NCFM

Each ingredient & the kinds of drugs it affects

For each ingredient in Ultra Digest 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.

GutGard Licorice extract18 drug types · 1,040 drugs

Antihypertensive Drugs

Theoretically, licorice might reduce the effects of antihypertensive drugs.
In human research, licorice increases blood pressure in a dose-dependent manner.

Likelihood Possible Evidence B
Cisplatin (Platinol-Aq)

Theoretically, licorice might reduce the effects of cisplatin.
In animal research, licorice diminished the therapeutic efficacy of cisplatin.

Likelihood Possible Evidence D
Corticosteroids

Theoretically, concomitant use of licorice and corticosteroids might increase the side effects of corticosteroids.
Case reports suggest that concomitant use of licorice and oral corticosteroids, such as hydrocortisone, can potentiate the duration of activity and increase blood levels of corticosteroids. Additionally, in one case report, a patient with neurogenic orthostatic hypertension stabilized on fludrocortisone 0.1 mg twice daily developed pseudohyperaldosteronism after recent consumption of large amounts of black licorice.

Likelihood Possible Evidence D
Cytochrome P450 2B6 (Cyp2B6) Substrates

Theoretically, licorice might increase levels of drugs metabolized by CYP2B6.
In vitro research shows that licorice extract and glabridin, a licorice constituent, inhibit CYP2B6 isoenzymes. Licorice extract from the species G. uralensis seems to inhibit CYP2B6 isoenzymes to a greater degree than G. glabra extract in vitro. Theoretically, these species of licorice might increase levels of drugs metabolized by CYP2B6; however, these interactions have not yet been reported in humans.

Likelihood Possible Evidence D
Cytochrome P450 2C19 (Cyp2C19) Substrates

Theoretically, licorice might increase levels of drugs metabolized by CYP2C19.
In vitro, licorice extracts from the species G. glabra and G. uralensis inhibit CYP2C19 isoenzymes in vitro. Theoretically, these species of licorice might increase levels of drugs metabolized by CYP2C19; however, this interaction has not yet been reported in humans.

Likelihood Possible Evidence D
Cytochrome P450 2C8 (Cyp2C8) Substrates

Theoretically, licorice might increase levels of drugs metabolized by CYP2C8.
In vitro, licorice extract from the species G. glabra and G. uralensis inhibits CYP2C8 isoenzymes. Theoretically, these species of licorice might increase levels of drugs metabolized by CYP2C8; however, this interaction has not yet been reported in humans.

Likelihood Possible Evidence D
Cytochrome P450 2C9 (Cyp2C9) Substrates

Theoretically, licorice might increase or decrease levels of drugs metabolized by CYP2C9.
There is conflicting evidence about the effect of licorice on CYP2C9 enzyme activity. In vitro research shows that extracts from the licorice species G. glabra and G. uralensis moderately inhibit CYP2C9 isoenzymes. However, evidence from an animal model shows that licorice extract from the species G. uralensis can induce hepatic CYP2C9 activity. Until more is known, licorice should be used cautiously in people taking CYP2C9 substrates.

Likelihood Possible Evidence D
Cytochrome P450 3A4 (Cyp3A4) Substrates

Theoretically, licorice might increase or decrease levels of drugs metabolized by CYP3A4.
Pharmacokinetic research shows that the licorice constituent glycyrrhizin, taken in a dosage of 150 mg orally twice daily for 14 days, modestly decreases the area under the concentration-time curve of midazolam by about 20%. Midazolam is a substrate of CYP3A4, suggesting that glycyrrhizin modestly induces CYP3A4 activity. Animal research also shows that licorice extract from the species G. uralensis induces CYP3A4 activity. However, licorice extract from G. glabra species appear to inhibit CYP3A4-induced metabolism of testosterone in vitro. It is thought that the G. glabra inhibits CYP3A4 due to its constituent glabridin, which is a moderate CYP3A4 inhibitor in vitro and not present in other licorice species. Until more is known, licorice should be used cautiously in people taking CYP3A4 substrates.

Likelihood Possible Evidence B
Digoxin (Lanoxin)

Theoretically, concomitant use of licorice with digoxin might increase the risk of cardiac toxicity.
Overuse or misuse of licorice with cardiac glycoside therapy might increase the risk of cardiac toxicity due to potassium loss.

Likelihood Possible Evidence D
Diuretic Drugs

Theoretically, concomitant use of licorice with diuretic drugs might increase the risk of hypokalemia.
Overuse of licorice might compound diuretic-induced potassium loss. In one case report, a 72-year-old male with a past medical history of hypertension, type 2 diabetes, hyperlipidemia, arrhythmia, stroke, and hepatic dysfunction was hospitalized with severe hypokalemia and uncontrolled hypertension due to pseudohyperaldosteronism. This was thought to be provoked by concomitant daily consumption of a product containing 225 mg of glycyrrhizin, a constituent of licorice, and hydrochlorothiazide 12.5 mg for 1 month.

Likelihood Possible Evidence D
Estrogens

Theoretically, licorice might increase or decrease the effects of estrogen therapy.
Theoretically, licorice might interfere with estrogen therapy due to estrogenic and anti-estrogenic effects.

Likelihood Possible Evidence D
Loop Diuretics

Theoretically, loop diuretics might increase the mineralocorticoid effects of licorice.
Theoretically, loop diuretics might enhance the mineralocorticoid effects of licorice by inhibiting the enzyme that converts cortisol to cortisone; however, bumetanide (Bumex) does not appear to have this effect.

Likelihood Possible Evidence D
Midazolam (Versed)

Theoretically, licorice might decrease levels of midazolam.
In humans, the licorice constituent glycyrrhizin appears to moderately induce the metabolism of midazolam. This is likely due to induction of cytochrome P450 3A4 by licorice. Until more is known, licorice should be used cautiously in people taking midazolam.

Likelihood Possible Evidence B
P-Glycoprotein Substrates

Theoretically, licorice might decrease the absorption of P-glycoprotein substrates.
In vitro research shows that licorice can increase P-glycoprotein activity.

Likelihood Possible Evidence D
Paclitaxel (Abraxane, Onxol)

Theoretically, licorice might decrease plasma levels and clinical effects of paclitaxel.
Multiple doses of licorice taken concomitantly with paclitaxel might reduce the effectiveness of paclitaxel. Animal research shows that licorice 3 grams/kg given orally for 14 days before intravenous administration of paclitaxel decreases the exposure to paclitaxel and increases its clearance. Theoretically, this occurs because licorice induces cytochrome P450 3A4 enzymes, which metabolize paclitaxel. Notably, a single dose of licorice did not affect exposure or clearance of paclitaxel.

Likelihood Possible Evidence D
Warfarin (Coumadin)

Theoretically, licorice might decrease plasma levels and clinical effects of warfarin.
Licorice seems to increase metabolism and decrease levels of warfarin in animal models. This is likely due to induction of cytochrome P450 2C9 (CYP2C9) metabolism by licorice. Advise patients taking warfarin to avoid taking licorice.

Likelihood Possible Evidence D
Cytochrome P450 1A2 (Cyp1A2) Substrates

Theoretically, licorice might decrease the levels and clinical effects of CYP1A2 substrates.
In vitro research shows that licorice induces CYP1A2 enzymes.

Likelihood Possible Evidence D
Methotrexate (Trexall, Others)

Theoretically, licorice might increase levels of methotrexate.
Animal research suggests that intravenous administration of glycyrrhizin, a licorice constituent, and high-dose methotrexate may delay methotrexate excretion and increase systemic exposure, leading to transient elevations in liver enzymes and total bilirubin. This interaction has not yet been reported in humans.

Likelihood Unlikely Evidence D
GutGard Licorice extract full monograph & interactions

Lactobacillus acidophilus NCFM1 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 Ultra Digest, from the product label.

Sundown Naturals

See all Sundown Naturals products
Name
Rexall Sundown, Inc.
City
Boca Raton
State
FL
ZipCode
33487
Phone Number
1-888-848-2435
Web Address
www.sundownnaturals.com
Pharmacist Counseling Corner

Ultra Digest by Sundown Naturals: Common Questions

Does Ultra Digest by Sundown Naturals interact with any medications?
Yes. Based on its ingredients, Ultra Digest has a known interaction with 1,186 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Ultra Digest 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.
Can I take this while I'm on antibiotics?
Not at the same time. Antibiotics can kill off the live bacteria in this supplement, making the probiotic part less effective. Ask your doctor or pharmacist how many hours to separate them — usually you'd take the probiotic several hours before or after your antibiotic dose.
Is the licorice extract safe if I'm pregnant or breastfeeding?
No — licorice is unsafe in pregnancy because of links to harmful effects. There isn't enough safety information to use it while breastfeeding either. If you're pregnant or nursing, talk with your doctor or pharmacist about whether this product is right for you.
What does Lactobacillus acidophilus do?
It's a beneficial bacteria (probiotic) that may help with IBS, antibiotic-related diarrhea, bacterial vaginosis, and Helicobacter pylori infection. It's rated possibly effective for these conditions based on current evidence.
What's Alpha-Galactosidase for?
It's an enzyme that helps your body break down complex carbohydrates — the kind that often cause bloating, gas, and digestive discomfort. That's why it's often included in digestive support supplements.
Are there any common side effects from the probiotics?
Most people tolerate them well, but some experience uncommon gastrointestinal side effects like bloating, gas, abdominal discomfort, or loose stool, especially when starting. These usually settle down as your body adjusts.
Is this product safe if I have a weakened immune system?
The safety data we have is limited, so you should check with your doctor first. Probiotics contain live organisms, and in rare cases they've caused infection in high-risk patients — your doctor can tell you if that's a concern for you.

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

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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.

Ultra Digest label
Go deeper

The Full Monographs Behind Ultra Digest’s Ingredients

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

Herb & supplement monograph

Licorice

Interacts with 1,040 drugs

Licorice root is a traditional remedy used for sore throats, coughs, and digestive complaints, but solid human evidence is limited for most uses. Regular licorice contains glycyrrhizin, whic...

Read the full Licorice 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

Ultra Digest'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 107 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 →

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See these in context on the Licorice monograph →

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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.

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