Gastri-Gest Ingredients & Drug Interactions
by Priority One Nutritional Supplements
What is this page for?
First and foremost: checking Gastri-Gest 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
Gastri-Gest is a dietary supplement by Priority One Nutritional Supplements with 13 active ingredients. Its ingredients are commonly taken for high cholesterol, menopausal symptoms, athletic performance and muscle building.Based on those ingredients, 2,098 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Marshmallow root extract, Slippery Elm (bark) extract, Bifidobacterium bifidum. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
Check Your Meds Against Gastri-Gest by Priority One Nutritional Supplements
Ask about any prescription or over-the-counter medication and we check it for interactions with Gastri-Gest by Priority One Nutritional Supplements — and tell you which ingredient is responsible.
AI summaries are generated from our interaction database for education only — always confirm with your pharmacist. How we use AI
Ask the Pharmacist
A licensed pharmacist will answer your question by email — free, usually within 24 hours.
Got it — thank you!
A licensed pharmacist will answer within 24 hours. Keep an eye on your email (worth checking spam, just in case).
HelloPharmacist Scorecard of Gastri-Gest by Priority One Nutritional Supplements
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.
What’s inside
Low disclosure
Gastri-Gest contains 13 ingredients, including digestive enzymes and probiotics designed to support your gut. The active components are gamma oryzanol (an antioxidant from rice bran), papain (a protein-digesting enzyme from papaya), two beneficial bacteria—Bifidobacterium bifidum and Lactobacillus acidophilus—plus several other enzymes (protease, lactase, lipase, sucrase, amylase, maltase, cellulase) and botanical extracts (slippery elm and marshmallow root).
These work together to help break down food and promote digestive comfort. The capsule itself and rice flour are inactive ingredients used to hold and deliver the formula.
Does it work?
Strong evidence
Evidence for this product's ingredients is mixed. Lactobacillus acidophilus is possibly effective for irritable bowel syndrome, H. pylori-related issues, antibiotic-associated diarrhea, and bacterial vaginosis.
Bifidobacterium bifidum is possibly effective for irritable bowel syndrome and respiratory infections. Gamma oryzanol is possibly effective for high cholesterol.
Lactase is effective for lactose intolerance. For the other ingredients—papain, protease, lipase, slippery elm, marshmallow root, and cellulase—we either lack evidence or the evidence is too limited to say whether they work for their intended purposes in supplement form.
How safe is it?
Well-documented data
Most of these ingredients are generally well tolerated at typical doses. Papain may cause allergic reactions, digestive upset, or in rare cases with high doses, serious stomach damage.
Bifidobacterium bifidum and Lactobacillus acidophilus are generally safe in healthy people but should be used cautiously by those with weakened immune systems. Gamma oryzanol is well tolerated but long-term safety hasn't been established.
Slippery elm can cause allergic reactions in some people. Marshmallow and protease also carry low but real risks of allergic reactions or digestive upset.
Gamma oryzanol should be avoided in pregnancy and breastfeeding. Papain and marshmallow should be avoided during pregnancy.
Papain, protease, lipase, slippery elm, and marshmallow should be used only with medical advice while breastfeeding because safety data are limited.
Meds to double-check
Moderate interaction found
Before you take this product, double-check with your pharmacist if you're on warfarin—papain may make it too strong. If you take antibiotics, space them at least 2 hours away from this supplement so they don't kill the beneficial bacteria.
Also flag lithium, any blood-thinning medications, or any oral drugs you need to absorb well—slippery elm and marshmallow can interfere.
The bottom line
Scorecard at a glanceFormula with limited ingredient disclosure with clinical evidence supporting its stated purpose. Moderate medication interactions have been identified, and safety information is well characterized.
Gastri-Gest may help with digestion and gut health if you have irritable bowel syndrome or need enzyme support, but don't start it without checking your medications—especially if you take warfarin, antibiotics, lithium, or other blood thinners. Talk to your pharmacist or doctor before taking this, particularly if you're pregnant, breastfeeding, or have a weakened immune system.
Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI
Assessment coverage: 9 of 13 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Nov 22, 2022.
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
General information
Key facts about Gastri-Gest, straight from the product label.
| Brand | Priority One Nutritional Supplements |
|---|---|
| Barcode (UPC) | 815354020587 |
| Net contents | 250 Vegetarian Capsule(s) |
| Market status | On market |
| Date entered into DSLD | Nov 22, 2022 |
| DSLD ID | 277362 |
| Product type | Other Combinations |
| Supplement form | Capsule |
| Dietary claims / uses | All Other, Structure/Function |
| Intended target group(s) | Vegetarian, Adult (18 - 50 Years) |
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 Gastri-Gest by Priority One Nutritional Supplements, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| Gamma Oryzanol | 130 mg | -- |
| Papain | 0 NP | -- |
| Bifidobacterium bifidum | 0 NP | -- |
| Lactobacillus acidophilus | 0 NP | -- |
| Protease | 0 NP | -- |
| Lactase | 0 NP | -- |
| Cellulase | 0 NP | -- |
| A Proprietary Blend | 630 mg | -- |
| Sucrase | 0 NP | -- |
| Amylase | 0 NP | -- |
| Lipase | 0 NP | -- |
| Slippery Elm (bark) extract | 60 mg | -- |
| Maltase | 0 NP | -- |
| Marshmallow root extract | 60 mg | -- |
Other ingredients: Rice Flour, Vegetarian Capsule
Tap any ingredient to jump to its full detail below.
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.
Precautions
Warning: If you are pregnant or breast feeding, consult your physician before using this product.
Keep out of reach of children.
Suggested/Recommended/Usage/Directions
Recommendations: Take two (2) capsules before meals, or as directed by your physician.
Storage
Keep container tightly closed, store in a cool, dry place.
Formulation
Contains no preservatives.
Vegetarian formulation
Non-GMO
General Statements
Bisphenol-A (BPA) & Phthalate Free
For professional use only.
Seals/Symbols
GMP Certified
Brand IP Statement(s)
Priority One Nutritional Supplements Inc since 1988
FDA Statement of Identity
A Dietary Supplement
FDA Disclaimer Statement
This statement has not been evaluated by the FDA. This product is not intended to diagnose, treat, cure, or prevent any disease.
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
Gastri-Gest by Priority One Nutritional Supplements label
The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.
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)The Ingredients in Gastri-Gest by Priority One Nutritional Supplements
These are the 13 active ingredients this product is made of. Select any to open its full monograph.
Serving size2 Vegetarian Capsules Dosage formCapsule Servings per container125 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.
Gamma Oryzanol
No knowninteractions
Gamma-oryzanol is a mix of plant compounds taken from rice bran oil, used mainly for cholesterol, menopause symptoms, and as a sports supplement. The...
Gamma Oryzanol monograph & interactionsA Proprietary Blend
- › Papain
- › Bifidobacterium bifidum
- › Lactobacillus acidophilus
- › Protease
- › Lactase
- › Cellulase
- › Sucrase
- › Amylase
- › Lipase
- › Maltase
Slippery Elm (bark) extract
Interacts with2,022 drugs
Slippery elm is a traditional herbal remedy made from the inner bark of a North American elm tree, used mainly to soothe sore throats and irritated di...
Slippery Elm (bark) extract monograph & interactionsMarshmallow root extract
Interacts with2,040 drugs
Marshmallow root is a traditional herb rich in soothing, gel-like fibers called mucilage, which is why it has long been used for coughs, sore throats,...
Marshmallow root extract monograph & interactionsOther (inactive) ingredients: Rice Flour, Vegetarian Capsule. These complete the product’s ingredient list but are not active constituents.
Gastri-Gest by Priority One Nutritional Supplements Drug Interactions
HelloPharmacist Interaction Report
Gastri-Gest by Priority One Nutritional Supplements does interact with medications.
The most serious concern is papain, which can increase the effects and side effects of warfarin (a blood thinner used after surgery or to prevent clots). In one case, a patient stable on warfarin had a dangerously high clotting time after taking a supplement containing papain.
Read the full breakdown — every affected drug type, severity by severity
The two probiotics in this product—Bifidobacterium bifidum and Lactobacillus acidophilus—can be killed by antibiotics if you take them at the same time, which means the probiotics won't work as intended. Slippery elm may slow how your body absorbs other oral medications, potentially making them less effective.
Marshmallow root may theoretically affect how your body handles lithium (a mood stabilizer) and could slightly increase bleeding risk if you're on blood thinners, though the concern is minor. Altogether, these interactions span 2,079 individual medications.
We could not check Cellulase, Sucrase, Amylase, or Maltase—we don't hold interaction data for those ingredients. For the ones we did check, use the medication search tool below to see if any of your drugs are affected.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against Gastri-Gest?
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 checkerIngredients driving the most interactions
Individual Drug Interactions
The ingredients in Gastri-Gest interact with 2,098 drugs. Click any drug to see the details.
5 of the 13 ingredients in Gastri-Gest interact with drugs. Each result below shows which ingredient is responsible. Marshmallow root extract Slippery Elm (bark) extract Bifidobacterium bifidum Lactobacillus acidophilus Papain
Adalimumab-bwwdHadlima
How Adalimumab-bwwd interacts with Gastri-Gest — through 2 ingredients. Tap an ingredient for the detail:
Slippery Elm (bark) ExtractOral Drugs Moderate
Interaction Summary
Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.
Read the full Slippery Elm (bark) Extract + Adalimumab-bwwd interactionMarshmallow Root ExtractOral Drugs Minor
Interaction Summary
Theoretically, mucilage in marshmallow might impair absorption of oral drugs.
Read the full Marshmallow Root Extract + Adalimumab-bwwd interactionAdefovirHepsera
How Adefovir interacts with Gastri-Gest — through 2 ingredients. Tap an ingredient for the detail:
Slippery Elm (bark) ExtractOral Drugs Moderate
Interaction Summary
Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.
Read the full Slippery Elm (bark) Extract + Adefovir interactionMarshmallow Root ExtractOral Drugs Minor
Interaction Summary
Theoretically, mucilage in marshmallow might impair absorption of oral drugs.
Read the full Marshmallow Root Extract + Adefovir interactionAdenosineATP Tablets
How Adenosine interacts with Gastri-Gest — through 2 ingredients. Tap an ingredient for the detail:
Slippery Elm (bark) ExtractOral Drugs Moderate
Interaction Summary
Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.
Read the full Slippery Elm (bark) Extract + Adenosine interactionMarshmallow Root ExtractOral Drugs Minor
Interaction Summary
Theoretically, mucilage in marshmallow might impair absorption of oral drugs.
Read the full Marshmallow Root Extract + Adenosine interactionAfatinib DimaleateGilotrif
How Afatinib Dimaleate interacts with Gastri-Gest — through 2 ingredients. Tap an ingredient for the detail:
Slippery Elm (bark) ExtractOral Drugs Moderate
Interaction Summary
Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.
Read the full Slippery Elm (bark) Extract + Afatinib Dimaleate interactionMarshmallow Root ExtractOral Drugs Minor
Interaction Summary
Theoretically, mucilage in marshmallow might impair absorption of oral drugs.
Read the full Marshmallow Root Extract + Afatinib Dimaleate interactionAgomelatineValdoxan
How Agomelatine interacts with Gastri-Gest — through 2 ingredients. Tap an ingredient for the detail:
Slippery Elm (bark) ExtractOral Drugs Moderate
Interaction Summary
Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.
Read the full Slippery Elm (bark) Extract + Agomelatine interactionMarshmallow Root ExtractOral Drugs Minor
Interaction Summary
Theoretically, mucilage in marshmallow might impair absorption of oral drugs.
Read the full Marshmallow Root Extract + Agomelatine interactionAlbendazoleAlbenza
How Albendazole interacts with Gastri-Gest — through 2 ingredients. Tap an ingredient for the detail:
Slippery Elm (bark) ExtractOral Drugs Moderate
Interaction Summary
Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.
Read the full Slippery Elm (bark) Extract + Albendazole interactionMarshmallow Root ExtractOral Drugs Minor
Interaction Summary
Theoretically, mucilage in marshmallow might impair absorption of oral drugs.
Read the full Marshmallow Root Extract + Albendazole interactionAlbuterolProAir HFA, Proventil, Ventolin (U.S.), Volmax
How Albuterol interacts with Gastri-Gest — through 2 ingredients. Tap an ingredient for the detail:
Slippery Elm (bark) ExtractOral Drugs Moderate
Interaction Summary
Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.
Read the full Slippery Elm (bark) Extract + Albuterol interactionMarshmallow Root ExtractOral Drugs Minor
Interaction Summary
Theoretically, mucilage in marshmallow might impair absorption of oral drugs.
Read the full Marshmallow Root Extract + Albuterol interactionAlcuroniumAlcuronium
How Alcuronium interacts with Gastri-Gest — through 2 ingredients. Tap an ingredient for the detail:
Slippery Elm (bark) ExtractOral Drugs Moderate
Interaction Summary
Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.
Read the full Slippery Elm (bark) Extract + Alcuronium interactionMarshmallow Root ExtractOral Drugs Minor
Interaction Summary
Theoretically, mucilage in marshmallow might impair absorption of oral drugs.
Read the full Marshmallow Root Extract + Alcuronium interactionAlectinib HydrochlorideAlecensa
How Alectinib Hydrochloride interacts with Gastri-Gest — through 2 ingredients. Tap an ingredient for the detail:
Slippery Elm (bark) ExtractOral Drugs Moderate
Interaction Summary
Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.
Read the full Slippery Elm (bark) Extract + Alectinib Hydrochloride interactionMarshmallow Root ExtractOral Drugs Minor
Interaction Summary
Theoretically, mucilage in marshmallow might impair absorption of oral drugs.
Read the full Marshmallow Root Extract + Alectinib Hydrochloride interactionAlemtuzumabCampath
How Alemtuzumab interacts with Gastri-Gest — through 2 ingredients. Tap an ingredient for the detail:
Slippery Elm (bark) ExtractOral Drugs Moderate
Interaction Summary
Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.
Read the full Slippery Elm (bark) Extract + Alemtuzumab interactionMarshmallow Root ExtractOral Drugs Minor
Interaction Summary
Theoretically, mucilage in marshmallow might impair absorption of oral drugs.
Read the full Marshmallow Root Extract + Alemtuzumab interactionAlendronateBinosto, Fosamax
How Alendronate interacts with Gastri-Gest — through 2 ingredients. Tap an ingredient for the detail:
Slippery Elm (bark) ExtractOral Drugs Moderate
Interaction Summary
Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.
Read the full Slippery Elm (bark) Extract + Alendronate interactionMarshmallow Root ExtractOral Drugs Minor
Interaction Summary
Theoretically, mucilage in marshmallow might impair absorption of oral drugs.
Read the full Marshmallow Root Extract + Alendronate interactionAlendronate Sodium
How Alendronate Sodium interacts with Gastri-Gest — through 2 ingredients. Tap an ingredient for the detail:
Slippery Elm (bark) ExtractOral Drugs Moderate
Interaction Summary
Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.
Read the full Slippery Elm (bark) Extract + Alendronate Sodium interactionMarshmallow Root ExtractOral Drugs Minor
Interaction Summary
Theoretically, mucilage in marshmallow might impair absorption of oral drugs.
Read the full Marshmallow Root Extract + Alendronate Sodium interactionAlendronate Sodium, CholecalciferolFosamax Plus D
How Alendronate Sodium, Cholecalciferol interacts with Gastri-Gest — through 2 ingredients. Tap an ingredient for the detail:
Slippery Elm (bark) ExtractOral Drugs Moderate
Interaction Summary
Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.
Read the full Slippery Elm (bark) Extract + Alendronate Sodium, Cholecalciferol interactionMarshmallow Root ExtractOral Drugs Minor
Interaction Summary
Theoretically, mucilage in marshmallow might impair absorption of oral drugs.
Read the full Marshmallow Root Extract + Alendronate Sodium, Cholecalciferol interactionAlfentanilAlfenta
How Alfentanil interacts with Gastri-Gest — through 2 ingredients. Tap an ingredient for the detail:
Slippery Elm (bark) ExtractOral Drugs Moderate
Interaction Summary
Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.
Read the full Slippery Elm (bark) Extract + Alfentanil interactionMarshmallow Root ExtractOral Drugs Minor
Interaction Summary
Theoretically, mucilage in marshmallow might impair absorption of oral drugs.
Read the full Marshmallow Root Extract + Alfentanil interactionAlfuzosinUroxatral
How Alfuzosin interacts with Gastri-Gest — through 2 ingredients. Tap an ingredient for the detail:
Slippery Elm (bark) ExtractOral Drugs Moderate
Interaction Summary
Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.
Read the full Slippery Elm (bark) Extract + Alfuzosin interactionMarshmallow Root ExtractOral Drugs Minor
Interaction Summary
Theoretically, mucilage in marshmallow might impair absorption of oral drugs.
Read the full Marshmallow Root Extract + Alfuzosin interactionAlginic Acid, Aluminum HydroxideRafton
How Alginic Acid, Aluminum Hydroxide interacts with Gastri-Gest — through 2 ingredients. Tap an ingredient for the detail:
Slippery Elm (bark) ExtractOral Drugs Moderate
Interaction Summary
Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.
Read the full Slippery Elm (bark) Extract + Alginic Acid, Aluminum Hydroxide interactionMarshmallow Root ExtractOral Drugs Minor
Interaction Summary
Theoretically, mucilage in marshmallow might impair absorption of oral drugs.
Read the full Marshmallow Root Extract + Alginic Acid, Aluminum Hydroxide interactionAliskirenTekturna
How Aliskiren interacts with Gastri-Gest — through 2 ingredients. Tap an ingredient for the detail:
Slippery Elm (bark) ExtractOral Drugs Moderate
Interaction Summary
Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.
Read the full Slippery Elm (bark) Extract + Aliskiren interactionMarshmallow Root ExtractOral Drugs Minor
Interaction Summary
Theoretically, mucilage in marshmallow might impair absorption of oral drugs.
Read the full Marshmallow Root Extract + Aliskiren interactionAlitretinoinPanretin
How Alitretinoin interacts with Gastri-Gest — through 2 ingredients. Tap an ingredient for the detail:
Slippery Elm (bark) ExtractOral Drugs Moderate
Interaction Summary
Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.
Read the full Slippery Elm (bark) Extract + Alitretinoin interactionMarshmallow Root ExtractOral Drugs Minor
Interaction Summary
Theoretically, mucilage in marshmallow might impair absorption of oral drugs.
Read the full Marshmallow Root Extract + Alitretinoin interactionAllopurinolCaplenal, Cosuric, Rimapurinol, Zyloprim, Zyloric
How Allopurinol interacts with Gastri-Gest — through 2 ingredients. Tap an ingredient for the detail:
Slippery Elm (bark) ExtractOral Drugs Moderate
Interaction Summary
Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.
Read the full Slippery Elm (bark) Extract + Allopurinol interactionMarshmallow Root ExtractOral Drugs Minor
Interaction Summary
Theoretically, mucilage in marshmallow might impair absorption of oral drugs.
Read the full Marshmallow Root Extract + Allopurinol interactionAlmotriptanAlmogran, Axert
How Almotriptan interacts with Gastri-Gest — through 2 ingredients. Tap an ingredient for the detail:
Slippery Elm (bark) ExtractOral Drugs Moderate
Interaction Summary
Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.
Read the full Slippery Elm (bark) Extract + Almotriptan interactionMarshmallow Root ExtractOral Drugs Minor
Interaction Summary
Theoretically, mucilage in marshmallow might impair absorption of oral drugs.
Read the full Marshmallow Root Extract + Almotriptan interactionAlogliptinNesina
How Alogliptin interacts with Gastri-Gest — through 2 ingredients. Tap an ingredient for the detail:
Slippery Elm (bark) ExtractOral Drugs Moderate
Interaction Summary
Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.
Read the full Slippery Elm (bark) Extract + Alogliptin interactionMarshmallow Root ExtractOral Drugs Minor
Interaction Summary
Theoretically, mucilage in marshmallow might impair absorption of oral drugs.
Read the full Marshmallow Root Extract + Alogliptin interactionAlogliptin, MetforminKazano
How Alogliptin, Metformin interacts with Gastri-Gest — through 2 ingredients. Tap an ingredient for the detail:
Slippery Elm (bark) ExtractOral Drugs Moderate
Interaction Summary
Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.
Read the full Slippery Elm (bark) Extract + Alogliptin, Metformin interactionMarshmallow Root ExtractOral Drugs Minor
Interaction Summary
Theoretically, mucilage in marshmallow might impair absorption of oral drugs.
Read the full Marshmallow Root Extract + Alogliptin, Metformin interactionAlogliptin, PioglitazoneOseni
How Alogliptin, Pioglitazone interacts with Gastri-Gest — through 2 ingredients. Tap an ingredient for the detail:
Slippery Elm (bark) ExtractOral Drugs Moderate
Interaction Summary
Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.
Read the full Slippery Elm (bark) Extract + Alogliptin, Pioglitazone interactionMarshmallow Root ExtractOral Drugs Minor
Interaction Summary
Theoretically, mucilage in marshmallow might impair absorption of oral drugs.
Read the full Marshmallow Root Extract + Alogliptin, Pioglitazone interactionAlosetronLotronex
How Alosetron interacts with Gastri-Gest — through 2 ingredients. Tap an ingredient for the detail:
Slippery Elm (bark) ExtractOral Drugs Moderate
Interaction Summary
Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.
Read the full Slippery Elm (bark) Extract + Alosetron interactionMarshmallow Root ExtractOral Drugs Minor
Interaction Summary
Theoretically, mucilage in marshmallow might impair absorption of oral drugs.
Read the full Marshmallow Root Extract + Alosetron interactionAlpelisibPiqray
How Alpelisib interacts with Gastri-Gest — through 2 ingredients. Tap an ingredient for the detail:
Slippery Elm (bark) ExtractOral Drugs Moderate
Interaction Summary
Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.
Read the full Slippery Elm (bark) Extract + Alpelisib interactionMarshmallow Root ExtractOral Drugs Minor
Interaction Summary
Theoretically, mucilage in marshmallow might impair absorption of oral drugs.
Read the full Marshmallow Root Extract + Alpelisib interactionAlpha 1-proteinaseZemaira
How Alpha 1-proteinase interacts with Gastri-Gest — through 2 ingredients. Tap an ingredient for the detail:
Slippery Elm (bark) ExtractOral Drugs Moderate
Interaction Summary
Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.
Read the full Slippery Elm (bark) Extract + Alpha 1-proteinase interactionMarshmallow Root ExtractOral Drugs Minor
Interaction Summary
Theoretically, mucilage in marshmallow might impair absorption of oral drugs.
Read the full Marshmallow Root Extract + Alpha 1-proteinase interactionAlprazolamNiravam, Xanax
How Alprazolam interacts with Gastri-Gest — through 2 ingredients. Tap an ingredient for the detail:
Slippery Elm (bark) ExtractOral Drugs Moderate
Interaction Summary
Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.
Read the full Slippery Elm (bark) Extract + Alprazolam interactionMarshmallow Root ExtractOral Drugs Minor
Interaction Summary
Theoretically, mucilage in marshmallow might impair absorption of oral drugs.
Read the full Marshmallow Root Extract + Alprazolam interactionAlteplase, TpaActilyse, Activase
How Alteplase, Tpa interacts with Gastri-Gest — through 2 ingredients. Tap an ingredient for the detail:
Slippery Elm (bark) ExtractOral Drugs Moderate
Interaction Summary
Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.
Read the full Slippery Elm (bark) Extract + Alteplase, Tpa interactionMarshmallow Root ExtractAnticoagulant/antiplatelet Drugs, Oral Drugs Minor
Interaction Summary
Theoretically, marshmallow flower might have antiplatelet effects.
Read the full Marshmallow Root Extract + Alteplase, Tpa interactionAltretamineHexalen
How Altretamine interacts with Gastri-Gest — through 2 ingredients. Tap an ingredient for the detail:
Slippery Elm (bark) ExtractOral Drugs Moderate
Interaction Summary
Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.
Read the full Slippery Elm (bark) Extract + Altretamine interactionMarshmallow Root ExtractOral Drugs Minor
Interaction Summary
Theoretically, mucilage in marshmallow might impair absorption of oral drugs.
Read the full Marshmallow Root Extract + Altretamine interactionAluminum ChlorideAluminum Chloride, Anhydrol Forte, Driclor, Drysol
How Aluminum Chloride interacts with Gastri-Gest — through 2 ingredients. Tap an ingredient for the detail:
Slippery Elm (bark) ExtractOral Drugs Moderate
Interaction Summary
Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.
Read the full Slippery Elm (bark) Extract + Aluminum Chloride interactionMarshmallow Root ExtractOral Drugs Minor
Interaction Summary
Theoretically, mucilage in marshmallow might impair absorption of oral drugs.
Read the full Marshmallow Root Extract + Aluminum Chloride interactionEach ingredient & the kinds of drugs it affects
For each ingredient in Gastri-Gest 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.
Marshmallow root extract
Lithium
Theoretically, due to potential diuretic effects, marshmallow might reduce excretion and increase levels of lithium.
Marshmallow is thought to have diuretic properties. To avoid lithium toxicity, the dose of lithium might need to be decreased when used with marshmallow.
Anticoagulant/Antiplatelet Drugs
Theoretically, marshmallow flower might have antiplatelet effects.
Animal research suggests that marshmallow flower extract has antiplatelet effects. However, the root and leaf of marshmallow, not the flower, are the plant parts most commonly found in dietary supplements. Theoretically, use of marshmallow flower with anticoagulant/antiplatelet drugs can have additive effects, and might increase the risk for bleeding in some patients.
Oral Drugs
Theoretically, mucilage in marshmallow might impair absorption of oral drugs.
Marshmallow contains mucilage which can affect oral drug absorption. To avoid changes in absorption, take marshmallow 30-60 minutes after oral medications.
Slippery Elm (bark) extract
Oral Drugs
Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.
Slippery elm inner bark contains mucilage, which may interfere with the absorption of orally administered drugs.
Bifidobacterium bifidum
Antibiotic Drugs
Theoretically, taking Bifidobacterium. bifidum with antibiotic drugs might decrease the effectiveness of B. bifidum.
Since B. bifidum preparations usually contain live and active organisms, simultaneously taking antibiotics might kill a significant number of the organisms. Tell patients to separate administration of antibiotics and B. bifidum preparations by at least 2 hours.
Lactobacillus acidophilus
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.
Papain
Warfarin (Coumadin)
Theoretically, papain might increase the effects and side effects of warfarin.
In one case report, a patient previously stable on warfarin was found to have an international normalization ratio (INR) of 7.4, which was attributed to ingestion of a supplement containing papain from papaya extract.
Brand information
Manufacturer and brand details for Gastri-Gest, from the product label.
Priority One Nutritional Supplements
See all Priority One Nutritional Supplements products- Name
- Priority One Nutritional Supplements, Inc.
Gastri-Gest by Priority One Nutritional Supplements: Common Questions
Does Gastri-Gest by Priority One Nutritional Supplements interact with any medications?
How can one product interact with so many drugs?
Where does this information come from?
Will this work for my irritable bowel syndrome?
What does papain do in this product?
Can I take this while I'm pregnant?
I'm on antibiotics. Can I take this?
Will this cause side effects?
What if I'm taking multiple medications?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Not sure if Gastri-Gest is safe with your meds?
Our pharmacists answer your medication & supplement questions — free.
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.
The Full Monographs Behind Gastri-Gest’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Gamma-oryzanol
Gamma-oryzanol is a mix of plant compounds taken from rice bran oil, used mainly for cholesterol, menopause symptoms, and as a sports supplement. The evidence is limited and mostly comes fro...
Read the full Gamma-oryzanol monograph → Herb & supplement monographPapain
Interacts with 2 drugsPapain is a protein-digesting enzyme from the papaya plant that is used in digestive supplements and some topical products. While it has clear food and laboratory uses, strong human evidence...
Read the full Papain monograph → Herb & supplement monographBifidobacterium Bifidum
Interacts with 182 drugsBifidobacterium bifidum is a 'friendly' bacteria (probiotic) that naturally lives in the human gut and is taken to support digestion and gut balance. Some evidence suggests probiotics may he...
Read the full Bifidobacterium Bifidum monograph → Herb & supplement monographLactobacillus Acidophilus
Interacts with 182 drugsLactobacillus 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 → Herb & supplement monographProteolytic Enzymes (proteases)
Proteolytic enzymes are proteins that help break down other proteins, and common examples include bromelain (from pineapple), papain (from papaya), trypsin, chymotrypsin, and pancreatin. Peo...
Read the full Proteolytic Enzymes (proteases) monograph → Herb & supplement monographLactase
Lactase is a digestive enzyme supplement that helps people who lack enough natural lactase break down lactose, the sugar in milk and dairy. It can reduce gas, bloating, cramping, and diarrhe...
Read the full Lactase monograph → Herb & supplement monographLipase
Lipase is a digestive enzyme that helps your body break down dietary fats. It is well established as part of prescription pancreatic enzyme therapy for people who cannot make enough of their...
Read the full Lipase monograph → Herb & supplement monographSlippery Elm
Interacts with 2,022 drugsSlippery elm is a traditional herbal remedy made from the inner bark of a North American elm tree, used mainly to soothe sore throats and irritated digestive tracts. Its mucilage can coat an...
Read the full Slippery Elm monograph → Herb & supplement monographMarshmallow
Interacts with 2,040 drugsMarshmallow root is a traditional herb rich in soothing, gel-like fibers called mucilage, which is why it has long been used for coughs, sore throats, and stomach irritation. Evidence for th...
Read the full Marshmallow monograph →Sources & How We Checked
Gastri-Gest'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.
- NIH Dietary Supplement Label Database (DSLD) — The official product label on file for this supplement.
- Natural Medicines (Therapeutic Research Center) — Evidence-graded clinical reference behind the ingredient interaction data.
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 46 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.
Papain 11 references
- The Review of Natural Products by Facts and Comparisons. St. Louis, MO: Wolters Kluwer Co., 1999.
- Shaw D, Leon C, Kolev S, Murray V. Traditional remedies and food supplements: a 5-year toxicological study (1991-1995). Drug Saf 1997;17:342-56.
- Shuttleworth D, Hill S, Marks R, Connelly DM. Relief of experimentally induced pruritus with a novel eutectic mixture of local anaesthetic agents. Br J Dermatol 1988;119:535-40.
- Mansfield LE, Ting S, Haverly RW, Yoo TJ. The incidence and clinical implications of hypersensitivity to papain in an allergic population, confirmed by blinded oral challenge. Ann Allergy 1985;55:541-3.
- Martin, T., Uhder, K., Kurek, R., Roeddiger, S., Schneider, L., Vogt, H. G., Heyd, R., and Zamboglou, N. Does prophylactic treatment with proteolytic enzymes reduce acute toxicity of adjuvant pelvic irradiation? Results of a double-blind randomized trial PubMed
- Walker-Renard, P. Update on the medicinal management of phytobezoars. Am J Gastroenterol. 1993;88(10):1663-1666.
- Tymoszuk D, Wiszniewska M, Walusiak-Skorupa J. Papain-induced occupational rhinoconjunctivitis and asthma - A case report. Med Pr 2016;67(1):109-12. PubMed
- Soto-Mera MT, López-Rico MR, Filgueira JF, et al. Occupational allergy to papain. Allergy 2000;55(10):983-4. PubMed
- Tarlo SM, Shaikh W, Bell B, et al. Papain-induced allergic reactions. Clin Allergy 1978;8(3):207-15. PubMed
- Baur X, König G, Bencze K, Fruhmann G. Clinical symptoms and results of skin test, RAST and bronchial provocation test in thirty-three papain workers: Evidence for strong immunogenic potency and clinically relevant proteolytic e?ects of airborne papain. C
- Novey HS, Keenan WJ, Fairshter RD, Wells ID, Wilson AF, Culver BD. Pulmonary disease in workers exposed to papain: clinico-physiological and immunological studies. Clin Allergy 1980;10(6):721-31. PubMed
Bifidobacterium Bifidum 7 references
- Pierce A. The American Pharmaceutical Association Practical Guide to Natural Medicines. New York: The Stonesong Press, 1999:19.
- Xiao JZ, Takahashi S, Odamaki T, et al. Antibiotic susceptibility of bifidobacterial strains distributed in the Japanese market. Biosci Biotechnol Biochem. 2010;74(2):336-42. PubMed
- Rerksuppaphol S, Rerksuppaphol L. Randomized controlled trial of probiotics to reduce common cold in schoolchildren. Pediatr Int. 2012;54(5):682-7. PubMed
- 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
- 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.
- Pruccoli G, Silvestro E, Pace Napoleone C, Aidala E, Garazzino S, Scolfaro C. Are probiotics safe? Bifidobacterium bacteremia in a child with severe heart failure. Infez Med. 2019;27(2):175-178.
- Esaiassen E, Hjerde E, Cavanagh JP, Simonsen GS, Klingenberg C; Norwegian Study Group on Invasive Bifidobacterial Infections. Bifidobacterium bacteremia: Clinical characteristics and a genomic approach to assess pathogenicity. J Clin Microbiol. 2017;55(7) PubMed
See these in context on the Bifidobacterium Bifidum monograph →
Lactobacillus Acidophilus 15 references
- Pierce A. The American Pharmaceutical Association Practical Guide to Natural Medicines. New York: The Stonesong Press, 1999:19.
- 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
- 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
- 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
- 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
- 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.
- 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
- 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
- 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.
- 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
- Ozer M, Goksu SY, Shahverdiani A, Mustafa M. Lactobacillus acidophilus-induced endocarditis and associated splenic abscess. Case Rep Infect Dis 2020;2020:1382709.
- 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
- 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
- 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.
- 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 →
Proteolytic Enzymes (proteases) 3 references
- Weeks JA, Harper RA, Simon RA, Burdick JD. Assessment of sensitization risk of a laundry pre-spotter containing protease. Cutan Ocul Toxicol. 2011;30(4):272-9. PubMed
- Marquès LI, Lara S, Abós T, Bartolomé B. Occupational rhinitis due to pepsin. J Investig Allergol Clin Immunol. 2006;16(2):136-7. DOI
- Cartier A, Malo JL, Pineau L, Dolovich J. Occupational asthma due to pepsin. J Allergy Clin Immunol. 1984;73(5 Pt 1):574-7. PubMed
See these in context on the Proteolytic Enzymes (proteases) monograph →
Lactase 1 reference
- Laukkanen A, Ruoppi P, Remes S, Koistinen T, Mäkinen-Kiljunen S. Lactase-induced occupational protein contact dermatitis and allergic rhinoconjunctivitis. Contact Dermatitis. 2007;57(2):89-93. PubMed
Lipase 1 reference
- Casper C, Hascoet JM, Ertl T, et al. Recombinant bile salt-stimulated lipase in preterm infant feeding: A randomized phase 3 study. PLoS One. 2016;11(5):e0156071. PubMed
Slippery Elm 3 references
- The Review of Natural Products by Facts and Comparisons. St. Louis, MO: Wolters Kluwer Co., 1999.
- Brinker F. Herb Contraindications and Drug Interactions. 2nd ed. Sandy, OR: Eclectic Medical Publications, 1998.
- Czarnecki D, Nixon R, Bekhor P, and et al. Delayed prolonged contact urticaria from the elm tree. Contact Dermatitis 1993;28:196-197. PubMed
Marshmallow 5 references
- Monographs on the medicinal uses of plant drugs. Exeter, UK: European Scientific Co-op Phytother, 1997.
- Leung AY, Foster S. Encyclopedia of Common Natural Ingredients Used in Food, Drugs and Cosmetics. 2nd ed. New York, NY: John Wiley & Sons, 1996.
- McGuffin M, Hobbs C, Upton R, Goldberg A, eds. American Herbal Products Association's Botanical Safety Handbook. Boca Raton, FL: CRC Press, LLC 1997.
- Brinker F. Herb Contraindications and Drug Interactions. 2nd ed. Sandy, OR: Eclectic Medical Publications, 1998.
- Hage-Sleiman R, Mroueh M, Daher CF. Pharmacological evaluation of aqueous extract of Althaea officinalis flower grown in Lebanon. Pharm Biol 2011;49(3):327-33.
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