Gastric Support Ingredients & Drug Interactions
What is this page for?
First and foremost: checking Gastric Support 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
Gastric Support is a dietary supplement by Village Vitality with 2 active ingredients. Its ingredients are commonly taken for zinc deficiency, immune support, cold symptoms.Based on those ingredients, 67 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Zinc. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
Check Your Meds Against Gastric Support by Village Vitality
Ask about any prescription or over-the-counter medication and we check it for interactions with Gastric Support by Village Vitality — 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
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HelloPharmacist Scorecard of Gastric Support by Village Vitality
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
Full disclosure
Gastric Support contains 2 active ingredients: zinc and zinc-carnosine. Zinc is a mineral your body needs for immune function, wound healing, and protein synthesis.
Zinc-carnosine is a chelated form — zinc bound to carnosine, an amino acid compound — designed for targeted gastric support. The product also contains several inactive ingredients: isomalt, stearic acid, magnesium stearate, modified cellulose, and silica, which serve as binders, thickeners, and flow agents in the tablet.
Does it work?
Moderate evidence
According to the evidence we hold, zinc is effective for treating zinc deficiency and likely effective for Wilson disease (a copper-storage disorder). For other uses — acne, acrodermatitis enteropathica (a rare genetic condition), age-related macular degeneration, and diabetes — the evidence rates it as possibly effective, meaning there's some supporting data but it's not definitive.
The effectiveness rating for zinc-carnosine specifically isn't separate in our data; it carries the same ratings as zinc.
How safe is it?
Well-documented data
Zinc is generally well tolerated in recommended amounts — that's below 40 mg daily for adults. At those doses, the most common side effects are mild: abdominal cramps, diarrhea, metallic taste, nausea, and vomiting, and they tend to be dose-related.
High doses above the tolerable upper limit of 40 mg per day carry a concern: over time, they can deplete your copper stores, which may lead to anemia and low white blood cells. If you take high-dose zinc long-term, some doctors recommend adding a small copper supplement to prevent that.
The product facts do not contain pregnancy or breastfeeding safety data for either ingredient, so talk with your pharmacist or doctor about whether it's appropriate for you during those times.
Meds to double-check
Moderate interaction found
Check before taking if you use quinolone antibiotics (ciprofloxacin, levofloxacin), tetracycline antibiotics (doxycycline, minocycline), cephalexin, penicillamine, ritonavir, integrase inhibitors like dolutegravir, cisplatin, or bictegravir/emtricitabine/tenofovir alafenamide — all are affected at Moderate severity. Spacing doses is key: take antibiotics at least 2 hours before or 4–6 hours after your zinc supplement.
The bottom line
Scorecard at a glanceFully disclosed formula with some supporting evidence for its stated purpose. Moderate medication interactions have been identified, and safety information is well characterized.
This product is useful if you have a zinc deficiency or want to support gut health with a zinc-based formula. If you take antibiotics — especially quinolones, tetracyclines, or cephalexin — or HIV medications, you'll need to space out the doses carefully.
Keep doses within the daily upper limit and check your exact medications with the tool on this page before you start.
Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI
Assessment coverage: 2 of 2 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Mar 24, 2020.
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 Gastric Support, straight from the product label.
| Brand | Village Vitality |
|---|---|
| Barcode (UPC) | 871149006540 |
| Net contents | 60 Tablet(s) |
| Market status | On market |
| Date entered into DSLD | Mar 24, 2020 |
| DSLD ID | 215727 |
| Product type | Other Combinations |
| Supplement form | Tablet Or Pill |
| Dietary claims / uses | Nutrient, All Other, Structure/Function |
| Intended target group(s) | Vegetarian, Adult (18 - 50 Years), Gluten Free, Dairy Free |
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 Gastric Support by Village Vitality, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| Zinc | 16 mg | 100% |
| Zinc-Carnosine | 75 mg | -- |
Other ingredients: Isomalt, Stearic Acid, Magnesium Stearate, Modified Cellulose, Silica
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.
Suggested/Recommended/Usage/Directions
Directions: Swallow with liquid or chew one tablet immediately after breakfast and one tablet before bedtime, or as directed by your healthcare practitioner.
Formula
Gastric Support is a zinc-carnosine complex consisting of elemental zinc as well as L-carnosine, a naturally occurring dipeptide (beta-alanine and L-histidine) found in muscle and brain tissue.
Formulation
More than 40 human and animal studies have demonstrated Gastric Support safely and effectively supports the stomach’s own natural cell-protective mechanisms without interfering in the normal digestive process.
Does not contain: Wheat, gluten, corn protein, yeast, soy, animal or dairy products, fish, shellfish, peanuts, tree nuts, egg, artificial colors, artificial sweeteners, or preservatives.
Supports gastric health
Pharmaceutical grade
Gastric Support meets or exceeds cGMP quality standards.
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
Cautions: Consult your healthcare practitioner before use.
Keep out of reach of children.
Avoid if allergic to any ingredient.
Storage
Storage: Keep tightly closed in a cool, dry place.
FDA Statement of Identity
Dietary Supplement
General Statements
Professional use only
This package is completely recyclable
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
Gastric Support by Village Vitality 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 Gastric Support by Village Vitality
These are the 2 active ingredients this product is made of. Select any to open its full monograph.
Serving size1 Tablet(s) Dosage formTablet Or Pill Servings per container60 Amounts shown are per serving.
Most supplement products combine several ingredients, and a medication can interact with the product through any one of them. Each ingredient below shows whether it has known drug interactions.
Zinc
Interacts with67 drugs
Zinc is an essential mineral that your body needs for immune function, wound healing, taste, and smell. Most people get enough from food, but suppleme...
Zinc monograph & interactionsZinc-Carnosine
Interacts with67 drugs
Zinc is an essential mineral that your body needs for immune function, wound healing, taste, and smell. Most people get enough from food, but suppleme...
Zinc-Carnosine monograph & interactionsOther (inactive) ingredients: Isomalt, Stearic Acid, Magnesium Stearate, Modified Cellulose, Silica. These complete the product’s ingredient list but are not active constituents.
Gastric Support by Village Vitality Drug Interactions
HelloPharmacist Interaction Report
Gastric Support by Village Vitality does interact with a number of medications.
Both active ingredients are zinc-based, and zinc can interfere with how your body absorbs certain drugs — most notably antibiotics and HIV medications.
Read the full breakdown — every affected drug type, severity by severity
The most serious interactions are Moderate in severity. Zinc can bind to quinolone antibiotics (like ciprofloxacin and levofloxacin) in your stomach and prevent your body from absorbing them properly, which means the antibiotic may not work as well.
The same thing happens with tetracycline antibiotics and cephalexin — zinc forms a complex with these drugs and can reduce their levels by 27% to 40%. If you take any of these antibiotics, you'll need to space them out: take the antibiotic at least 2 hours before, or 4–6 hours after, your zinc supplement.
Zinc also interacts with penicillamine (a medication for copper and arthritis), ritonavir (an HIV drug), and integrase inhibitors like dolutegravir — all Moderate severity. Additionally, cisplatin (a cancer drug) and bictegravir/emtricitabine/tenofovir alafenamide (another HIV combination) are theoretically affected.
Altogether, these interactions span 65 individual medications.
Before you start this product, use the medication checker on this page to look up any prescription drugs you're taking.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against Gastric Support?
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 Gastric Support interact with 67 drugs. Click any drug to see the details.
1 of the 2 ingredients in Gastric Support interact with drugs. Each result below shows which ingredient is responsible. Zinc
Amphotericin, TetracyclineMysteclin-F
How Amphotericin, Tetracycline interacts with Gastric Support — through 1 ingredient. Tap an ingredient for the detail:
Zinc-carnosineTetracycline Antibiotics Moderate
Interaction Summary
Zinc might reduce levels of tetracycline antibiotics.
Read the full Zinc-carnosine + Amphotericin, Tetracycline interactionBictegravir, Emtricitabine, Tenofovir AlafenamideBiktarvy
How Bictegravir, Emtricitabine, Tenofovir Alafenamide interacts with Gastric Support — through 1 ingredient. Tap an ingredient for the detail:
Zinc-carnosineBictegravir/emtricitabine/tenofovir Alafenamide (biktarvy) Moderate
Interaction Summary
Theoretically, zinc might decrease levels of bictegravir/emtricitabine/tenofovir alafenamide by reducing its absorption.
Read the full Zinc-carnosine + Bictegravir, Emtricitabine, Tenofovir Alafenamide interactionBismuth Subsalicylate, Metronidazole, TetracyclineHelidac
How Bismuth Subsalicylate, Metronidazole, Tetracycline interacts with Gastric Support — through 1 ingredient. Tap an ingredient for the detail:
Zinc-carnosineTetracycline Antibiotics Moderate
Interaction Summary
Zinc might reduce levels of tetracycline antibiotics.
Read the full Zinc-carnosine + Bismuth Subsalicylate, Metronidazole, Tetracycline interactionCephalexinCephalex, Keflex, Keftab, Lexin
How Cephalexin interacts with Gastric Support — through 1 ingredient. Tap an ingredient for the detail:
Zinc-carnosineCephalexin (keflex) Moderate
Interaction Summary
Zinc might decrease cephalexin levels by chelating with cephalexin in the gut and preventing its absorption.
Read the full Zinc-carnosine + Cephalexin interactionChlortetracyclineAureomycin
How Chlortetracycline interacts with Gastric Support — through 1 ingredient. Tap an ingredient for the detail:
Zinc-carnosineTetracycline Antibiotics Moderate
Interaction Summary
Zinc might reduce levels of tetracycline antibiotics.
Read the full Zinc-carnosine + Chlortetracycline interactionCinoxacinCinobac
How Cinoxacin interacts with Gastric Support — through 1 ingredient. Tap an ingredient for the detail:
Zinc-carnosineQuinolone Antibiotics Moderate
Interaction Summary
Zinc can decrease the levels and clinical effects of quinolones antibiotics.
Read the full Zinc-carnosine + Cinoxacin interactionCiprofloxacinCiloxan, Cipro, Cipro IV, Cipro XR, Ciprobay, Otiprio
How Ciprofloxacin interacts with Gastric Support — through 1 ingredient. Tap an ingredient for the detail:
Zinc-carnosineQuinolone Antibiotics Moderate
Interaction Summary
Zinc can decrease the levels and clinical effects of quinolones antibiotics.
Read the full Zinc-carnosine + Ciprofloxacin interactionCisplatinPlatinol-AQ
How Cisplatin interacts with Gastric Support — through 1 ingredient. Tap an ingredient for the detail:
Zinc-carnosineCisplatin (platinol-aq) Moderate
Interaction Summary
Theoretically, zinc might interfere with the therapeutic effects of cisplatin.
Read the full Zinc-carnosine + Cisplatin interactionClinafloxacinClinafloxacin
How Clinafloxacin interacts with Gastric Support — through 1 ingredient. Tap an ingredient for the detail:
Zinc-carnosineQuinolone Antibiotics Moderate
Interaction Summary
Zinc can decrease the levels and clinical effects of quinolones antibiotics.
Read the full Zinc-carnosine + Clinafloxacin interactionCobicistat, Elvitegravir, Emtricitabine, Tenofovir Alafenamide FumarateGenvoya
How Cobicistat, Elvitegravir, Emtricitabine, Tenofovir Alafenamide Fumarate interacts with Gastric Support — through 1 ingredient. Tap an ingredient for the detail:
Zinc-carnosineBictegravir/emtricitabine/tenofovir Alafenamide (biktarvy) Moderate
Interaction Summary
Theoretically, zinc might decrease levels of bictegravir/emtricitabine/tenofovir alafenamide by reducing its absorption.
Read the full Zinc-carnosine + Cobicistat, Elvitegravir, Emtricitabine, Tenofovir Alafenamide Fumarate interactionDarunavir, Cobicistat, Emtricitabine, Tenofovir AlafenamideSymtuza
How Darunavir, Cobicistat, Emtricitabine, Tenofovir Alafenamide interacts with Gastric Support — through 1 ingredient. Tap an ingredient for the detail:
Zinc-carnosineBictegravir/emtricitabine/tenofovir Alafenamide (biktarvy) Moderate
Interaction Summary
Theoretically, zinc might decrease levels of bictegravir/emtricitabine/tenofovir alafenamide by reducing its absorption.
Read the full Zinc-carnosine + Darunavir, Cobicistat, Emtricitabine, Tenofovir Alafenamide interactionDarunavir, RitonavirDarunavir, Ritonavir
How Darunavir, Ritonavir interacts with Gastric Support — through 1 ingredient. Tap an ingredient for the detail:
Zinc-carnosineRitonavir (norvir) Moderate
Interaction Summary
Zinc modestly reduces levels of ritonavir.
Read the full Zinc-carnosine + Darunavir, Ritonavir interactionDasabuvir Sodium, Ombitasvir, Paritaprevir, RitonavirViekira XR
How Dasabuvir Sodium, Ombitasvir, Paritaprevir, Ritonavir interacts with Gastric Support — through 1 ingredient. Tap an ingredient for the detail:
Zinc-carnosineRitonavir (norvir) Moderate
Interaction Summary
Zinc modestly reduces levels of ritonavir.
Read the full Zinc-carnosine + Dasabuvir Sodium, Ombitasvir, Paritaprevir, Ritonavir interactionDemeclocyclineDeclomycin
How Demeclocycline interacts with Gastric Support — through 1 ingredient. Tap an ingredient for the detail:
Zinc-carnosineTetracycline Antibiotics Moderate
Interaction Summary
Zinc might reduce levels of tetracycline antibiotics.
Read the full Zinc-carnosine + Demeclocycline interactionDolutegravir, Emtricitabine, Tenofovir AlafenamideDolutegravir, Emtricitabine, Tenofovir Alafenamide
How Dolutegravir, Emtricitabine, Tenofovir Alafenamide interacts with Gastric Support — through 1 ingredient. Tap an ingredient for the detail:
Zinc-carnosineBictegravir/emtricitabine/tenofovir Alafenamide (biktarvy) Moderate
Interaction Summary
Theoretically, zinc might decrease levels of bictegravir/emtricitabine/tenofovir alafenamide by reducing its absorption.
Read the full Zinc-carnosine + Dolutegravir, Emtricitabine, Tenofovir Alafenamide interactionDoripenemDoribax
How Doripenem interacts with Gastric Support — through 1 ingredient. Tap an ingredient for the detail:
Zinc-carnosineQuinolone Antibiotics, Tetracycline Antibiotics Moderate
Interaction Summary
Zinc can decrease the levels and clinical effects of quinolones antibiotics.
Read the full Zinc-carnosine + Doripenem interactionDoxycyclineDoryx, Doxy, Doxy-D, Doxycin, Doxycycline Injection, Doxylin +6 more
How Doxycycline interacts with Gastric Support — through 1 ingredient. Tap an ingredient for the detail:
Zinc-carnosineTetracycline Antibiotics Moderate
Interaction Summary
Zinc might reduce levels of tetracycline antibiotics.
Read the full Zinc-carnosine + Doxycycline interactionDoxycycline HyclateActiclate, Acticlate Cap, Lymepak
How Doxycycline Hyclate interacts with Gastric Support — through 1 ingredient. Tap an ingredient for the detail:
Zinc-carnosineTetracycline Antibiotics Moderate
Interaction Summary
Zinc might reduce levels of tetracycline antibiotics.
Read the full Zinc-carnosine + Doxycycline Hyclate interactionDoxycycline MonohydrateErfacea
How Doxycycline Monohydrate interacts with Gastric Support — through 1 ingredient. Tap an ingredient for the detail:
Zinc-carnosineTetracycline Antibiotics Moderate
Interaction Summary
Zinc might reduce levels of tetracycline antibiotics.
Read the full Zinc-carnosine + Doxycycline Monohydrate interactionDoxycylineDoxychel
How Doxycyline interacts with Gastric Support — through 1 ingredient. Tap an ingredient for the detail:
Zinc-carnosineTetracycline Antibiotics Moderate
Interaction Summary
Zinc might reduce levels of tetracycline antibiotics.
Read the full Zinc-carnosine + Doxycyline interactionElvitegravir, Cobicistat, Emtricitabine, Tenofovir Disoproxil FumarateStribild
How Elvitegravir, Cobicistat, Emtricitabine, Tenofovir Disoproxil Fumarate interacts with Gastric Support — through 1 ingredient. Tap an ingredient for the detail:
Zinc-carnosineBictegravir/emtricitabine/tenofovir Alafenamide (biktarvy) Moderate
Interaction Summary
Theoretically, zinc might decrease levels of bictegravir/emtricitabine/tenofovir alafenamide by reducing its absorption.
Read the full Zinc-carnosine + Elvitegravir, Cobicistat, Emtricitabine, Tenofovir Disoproxil Fumarate interactionEmtricitabineEmtriva
How Emtricitabine interacts with Gastric Support — through 1 ingredient. Tap an ingredient for the detail:
Zinc-carnosineBictegravir/emtricitabine/tenofovir Alafenamide (biktarvy) Moderate
Interaction Summary
Theoretically, zinc might decrease levels of bictegravir/emtricitabine/tenofovir alafenamide by reducing its absorption.
Read the full Zinc-carnosine + Emtricitabine interactionEmtricitabine, Rilpivirine, TenofovirComplera
How Emtricitabine, Rilpivirine, Tenofovir interacts with Gastric Support — through 1 ingredient. Tap an ingredient for the detail:
Zinc-carnosineBictegravir/emtricitabine/tenofovir Alafenamide (biktarvy) Moderate
Interaction Summary
Theoretically, zinc might decrease levels of bictegravir/emtricitabine/tenofovir alafenamide by reducing its absorption.
Read the full Zinc-carnosine + Emtricitabine, Rilpivirine, Tenofovir interactionEmtricitabine, Rilpivirine, Tenofovir AlafenamideOdefsey
How Emtricitabine, Rilpivirine, Tenofovir Alafenamide interacts with Gastric Support — through 1 ingredient. Tap an ingredient for the detail:
Zinc-carnosineBictegravir/emtricitabine/tenofovir Alafenamide (biktarvy) Moderate
Interaction Summary
Theoretically, zinc might decrease levels of bictegravir/emtricitabine/tenofovir alafenamide by reducing its absorption.
Read the full Zinc-carnosine + Emtricitabine, Rilpivirine, Tenofovir Alafenamide interactionEmtricitabine, Tenofovir Alafenamide FumarateDescovy
How Emtricitabine, Tenofovir Alafenamide Fumarate interacts with Gastric Support — through 1 ingredient. Tap an ingredient for the detail:
Zinc-carnosineBictegravir/emtricitabine/tenofovir Alafenamide (biktarvy) Moderate
Interaction Summary
Theoretically, zinc might decrease levels of bictegravir/emtricitabine/tenofovir alafenamide by reducing its absorption.
Read the full Zinc-carnosine + Emtricitabine, Tenofovir Alafenamide Fumarate interactionEnoxacinPenetrex
How Enoxacin interacts with Gastric Support — through 1 ingredient. Tap an ingredient for the detail:
Zinc-carnosineQuinolone Antibiotics Moderate
Interaction Summary
Zinc can decrease the levels and clinical effects of quinolones antibiotics.
Read the full Zinc-carnosine + Enoxacin interactionEravacyclineXerava
How Eravacycline interacts with Gastric Support — through 1 ingredient. Tap an ingredient for the detail:
Zinc-carnosineTetracycline Antibiotics Moderate
Interaction Summary
Zinc might reduce levels of tetracycline antibiotics.
Read the full Zinc-carnosine + Eravacycline interactionFinafloxacinXtoro
How Finafloxacin interacts with Gastric Support — through 1 ingredient. Tap an ingredient for the detail:
Zinc-carnosineQuinolone Antibiotics Moderate
Interaction Summary
Zinc can decrease the levels and clinical effects of quinolones antibiotics.
Read the full Zinc-carnosine + Finafloxacin interactionGatifloxacinTequin, Tequin Injection
How Gatifloxacin interacts with Gastric Support — through 1 ingredient. Tap an ingredient for the detail:
Zinc-carnosineQuinolone Antibiotics Moderate
Interaction Summary
Zinc can decrease the levels and clinical effects of quinolones antibiotics.
Read the full Zinc-carnosine + Gatifloxacin interactionGemifloxacinFactive
How Gemifloxacin interacts with Gastric Support — through 1 ingredient. Tap an ingredient for the detail:
Zinc-carnosineQuinolone Antibiotics Moderate
Interaction Summary
Zinc can decrease the levels and clinical effects of quinolones antibiotics.
Read the full Zinc-carnosine + Gemifloxacin interactionEach ingredient & the kinds of drugs it affects
For each ingredient in Gastric Support with known interactions, here are the types of medications it can affect. Open any type for the detail — or search your exact drug in the checker above.
Zinc
Bictegravir/Emtricitabine/Tenofovir Alafenamide (Biktarvy)
Theoretically, zinc might decrease levels of bictegravir/emtricitabine/tenofovir alafenamide by reducing its absorption.
Advise patients that bictegravir/emtricitabine/tenofovir alafenamide should be taken at least 2 hours before or 6 hours after zinc containing products.
Cephalexin (Keflex)
Zinc might decrease cephalexin levels by chelating with cephalexin in the gut and preventing its absorption.
A pharmacokinetic study shows that zinc sulfate 250 mg taken concomitantly with cephalexin 500 mg decreases peak levels of cephalexin by 31% and reduces the exposure to cephalexin by 27%. Also, taking zinc sulfate 3 hours before cephalexin decreases peak levels of cephalexin by 11% and reduces the exposure to cephalexin by 18%. By decreasing cephalexin levels, zinc might increase the risk of treatment failure. This effect does not occur when zinc is taken 3 hours after the cephalexin dose. To avoid an interaction, advise patients take zinc sulfate 3 hours after taking cephalexin.
Cisplatin (Platinol-Aq)
Theoretically, zinc might interfere with the therapeutic effects of cisplatin.
Animal research suggests that zinc stimulates tumor cell production of the protein metallothionein, which binds and inactivates cisplatin. It is not known whether zinc supplements or high dietary zinc intake can cause clinically significant interference with cisplatin therapy. Cisplatin might also increase zinc excretion.
Integrase Inhibitors
Theoretically, taking zinc along with integrase inhibitors might decrease the levels and clinical effects of these drugs.
Zinc is a divalent cation. Pharmacokinetic studies have shown that other divalent cations such as calcium and iron can decrease blood levels of the integrase inhibitor dolutegravir through chelation.
Penicillamine (Cuprimine, Depen)
Zinc might reduce the levels and clinical effects of penicillamine.
By forming an insoluble complex with penicillamine, zinc interferes with penicillamine absorption and activity. Zinc supplements reduce the efficacy of low-dose penicillamine (0.5-1 gram/day), but do not seem to affect higher doses (1-2.75 gram/day), provided dosing times are separated. Advise patients to take zinc and penicillamine at least 2 hours apart.
Quinolone Antibiotics
Zinc can decrease the levels and clinical effects of quinolones antibiotics.
Quinolones form complexes with zinc in the gastrointestinal tract, reducing absorption of both the quinolone and zinc if taken at the same time. Advise patients to take these drugs at least 2 hours before, or 4-6 hours after, zinc supplements.
Ritonavir (Norvir)
Zinc modestly reduces levels of ritonavir.
Clinical research shows that zinc might reduce serum ritonavir levels by chelating with ritonavir in the gut and preventing its absorption. In patients with HIV, ritonavir is taken with atazanavir to prevent the metabolism and increase the effects of atazanavir. A pharmacokinetic study shows that, in patients being treated with atazanavir/ritonavir, co-administration of zinc sulfate (Solvazinc tablets) 125 mg as a single dose or as multiple daily doses for 2 weeks reduces plasma levels of ritonavir by about 16%. However, atazanavir levels still remains high enough to prevent HIV virus replication. Therefore, the decrease in ritonavir levels is not likely to be clinically significant.
Tetracycline Antibiotics
Zinc might reduce levels of tetracycline antibiotics.
Tetracyclines form complexes with zinc in the gastrointestinal tract, which can reduce absorption of both the tetracycline and zinc when taken at the same time. Taking zinc sulfate 200 mg with tetracycline reduces absorption of the antibiotic by 30% to 40%. Demeclocycline and minocycline cause a similar interaction. However, doxycycline does not seem to interact significantly with zinc. Advise patients to take tetracyclines at least 2 hours before, or 4-6 hours after, zinc supplements to avoid any interactions.
Amiloride (Midamor)
Amiloride can modestly reduce zinc excretion and increase zinc levels.
Clinical research shows that amiloride can reduce urinary zinc excretion, especially at doses of 10 mg per day or more. This zinc-sparing effect can help to counteract zinc losses caused by thiazide diuretics, but it is unlikely to cause zinc toxicity at usual amiloride doses. The other potassium-sparing diuretics, spironolactone (Aldactone) and triamterene (Dyrenium), do not seem to have a zinc-sparing effect.
Atazanavir (Reyataz)
Zinc modestly reduces levels of atazanavir, although this effect does not seem to be clinically significant.
Clinical research shows that zinc might decrease serum atazanavir levels by chelating with atazanavir in the gut and preventing its absorption. Although a single dose of zinc sulfate (Solvazinc tablets) 125 mg orally does not affect atazanavir concentrations in patients being treated with atazanavir/ritonavir, co-administration of zinc sulfate 125 mg daily for 2 weeks reduces plasma levels of atazanavir by about 22% in these patients. However, despite this decrease, atazanavir levels still remain at high enough concentrations for the prevention of HIV virus replication.
Brand information
Manufacturer and brand details for Gastric Support, from the product label.
Village Vitality
See all Village Vitality products- Name
- Village Vitality, LLC
- Street Address
- 79 Tinker Street, Floor 2
- City
- Woodstock
- State
- NY
- ZipCode
- 12498
- Phone Number
- 800-807-6861
- Web Address
- www.villagevitality.com
Gastric Support by Village Vitality: Common Questions
Does Gastric Support by Village Vitality interact with any medications?
How can one product interact with so many drugs?
Where does this information come from?
Is this safe to take long-term?
What side effects should I expect?
Does it really help with stomach health?
Can I take this with antibiotics?
What's the difference between zinc and zinc-carnosine in this product?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Not sure if Gastric Support 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 Gastric Support’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Sources & How We Checked
Gastric Support'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 88 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.
Zinc 88 references
- Barceloux DG. Zinc. J Toxicol Clin Toxicol 1999;37:279-92.
- Eby GA, Davis DR, Halcomb WW. Reduction in duration of common colds by zinc gluconate lozenges in a double-blind study. Antimicrob Agents Chemother 1984;25:20-4. DOI
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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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