🟢 100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 50% of ingredients have research evidence
A Label Compliance Grade

Product Label

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Label Data

2 Vegetarian Capsule(s) Serving Size
30 Servings
Other Combinations Product Type
50% Evidence Coverage

Supplement Facts — Evidence Check

8 mg (73% DV)
✅ Within RDA (0.7× RDA of 11 mg) 📚 258 studies (Tier A: 6, B: 134)
RDA 11mg This product: 8mg UL 40mg
Saccharomyces boulardii
Mastic Gum
260 mg
📊 Market median: 400.0mg (142 products) 📚 10 studies (Tier A: 0, B: 2)
This product: 200mg
📊 3.4× RDA — above typical dose (UL: 40 mg) 📚 258 studies (Tier A: 6, B: 134)
RDA 11mg This product: 37.5mg UL 40mg

Other Ingredients

Vegetarian Capsule Magnesium Stearate Silica

Label Claims — Verification

All Other
Structure/Function
All Other (99% of products) Structure/Function (84% of products) Nutrient (48% of products)

Target Groups

Vegan Vegetarian Adult (18 - 50 Years) Gluten Free Dairy Free Sugar Free

Product Information

📋 Directions for Use

Suggested Usage: 2 capsules 2 times per day or as directed by a health professional.

⚠️ Warnings & Precautions

Cautions: As with any supplement, consult your health professional before use if you are pregnant, breastfeeding, or trying to conceive, or if you are taking medication, have a medical condition, or anticipate a surgery.

Keep out of the reach of children.

Sealed for your protection. Do not use if seal is broken.

🧪 Formulation Notes

Contains no artificial colors, preservatives, or sweeteners; no dairy, starch, sugar, wheat, gluten, soy, corn, egg, fish, shellfish, animal products, salt, tree nuts, or GMOs.

Suitable for vegetarians/vegans.

With mastic gum, saccharomyces bouldardii & zinc l-carnosine

Additional Information

isura Non-GMO - Mass spec Documentation Lab tested

Gastro-Assist contains key functional ingredients that together promote the health of the intestinal tract, help to encourage a healthy gut flora balance, and support a balanced intestinal inflammatory response to normal internal stressors.

Manufactured by Natural Factors to ensure safety and potency in accordance with Good Manufacturing Practices (GMP) of the FDA and Health Canada.

For freshness, store in a cool, dry place.

Product of Canada Purity & potency guaranteed Recyclable container and label.

Healthy intestinal function

R2

Product Details

UPC / SKU 0 68958 01756 3
DSLD Entry Date 2018-07-25
Product Type Other Combinations
Form Capsule
DSLD ID 179381
Data Updated 2026-04-11

Research Evidence

397 Research Sources
55 Avg Quality Score
200 Meta Analysis
68 Rct
58 Systematic Review
53 Clinical Trial
9 Cochrane Review
2 Narrative Review
2 Regulatory Source
1 Observational
1 Other
1 Openfda Safety
A Zinc supplementation for improving pregnancy and infant outcome
Meta Analysis The Cochrane database of systematic reviews 2021
A Zinc supplementation for preventing mortality, morbidity, and growth failure in children aged 6 months to 12 years
Narrative Review The Cochrane database of systematic reviews 2023
A Oral zinc for treating diarrhoea in children
Meta Analysis The Cochrane database of systematic reviews 2016
A Zinc supplements for preventing otitis media
Meta Analysis The Cochrane database of systematic reviews 2014
A Zinc for the prevention or treatment of acute viral respiratory tract infections in adults: a rapid systematic review and meta-analysis of randomised controlled trials
Meta Analysis BMJ open 2021
A Zinc supplements for preventing otitis media
Meta Analysis The Cochrane database of systematic reviews 2010
A Zinc supplements for preventing otitis media
Meta Analysis The Cochrane database of systematic reviews 2012
A Compression bandages or stockings versus no compression for treating venous leg ulcers
Meta Analysis The Cochrane database of systematic reviews 2021
A Zinc supplementation for mental and motor development in children
Meta Analysis The Cochrane database of systematic reviews 2012
A Zinc for the common cold
Meta Analysis The Cochrane database of systematic reviews 2013
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