🟢 100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 38% of ingredients have research evidence
A Label Compliance Grade

Product Label

📸

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Label Data

1 Chewable Tablet(s) Serving Size
60 Servings
Other Combinations Product Type
38% Evidence Coverage

Supplement Facts — Evidence Check

Calories
10 {Calories}
Total Carbohydrates
2 Gram(s) (1% DV)
Sugar
2 Gram(s)
30 mg (3% DV)
📊 Market median: 500.0mg (266 products) 📚 436 studies (Tier A: 25, B: 228)
RDA 1000mg This product: 30mg UL 2500mg
Alginic Acid
450 mg
250 mg
📊 Market median: 420.0mg (127 products) 📚 1 studies (Tier A: 0, B: 1)
This product: 250mg
📊 Market median: 4002.0mg (1 products) 📚 20 studies (Tier A: 0, B: 2)
This product: 50mg
Slippery Elm
50 mg

Other Ingredients

Fruit Sugar proprietary FOS Chicory root extract Mung Bean extract Stearic Acid

Label Claims — Verification

All Other
Structure/Function
All Other (100% of products) Structure/Function (81% of products) Nutrient (71% of products) Approved Health (13% of products)

Target Groups

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

Product Information

📋 Directions for Use

Recommended Usage: As a dietary supplement, chew 1-2 tablets after meals or before retiring. For best results, drink a glass of water after chewing tablets.

⚠️ Warnings & Precautions

Do not use if tamper-evident seal is broken or missing.

KEEP OUT OF REACH OF CHILDREN

🧪 Formulation Notes

Contains no yeast, dairy, eggs, gluten, corn, wheat, starch, artificial colors or preservatives.

Vegetarian

Additional Information

ACID BLOCK is a combination of nutrients designed to provide relief of intermittent heartburn and indigestion. Alginic acid and sodium alginate react with saliva and gastric acid to form a foamy froth or alginic raft that floats on top of the gastric contents and acts as a barrier to acid and food reflux. Slippery elm and deglycyrrhized licorice act as demulents which are soothing to the alimentary canal.

PHYSICIAN FORMULATED

For Temporary Relief of Occasional Indigestion and Heartburn

OPTIMAL NUTRITIONAL SUPPORT

Product No. 4015

Product Details

UPC / SKU 0 08429 04015 7
DSLD Entry Date 2015-02-25
Product Type Other Combinations
Form Tablet or Pill
Brand Rx Vitamins
DSLD ID 42025
Data Updated 2026-04-11

Research Evidence

511 Research Sources
57 Avg Quality Score
266 Meta Analysis
95 Systematic Review
76 Rct
49 Clinical Trial
12 Guideline
4 Regulatory Source
2 Cochrane Review
2 Other
2 Narrative Review
1 Openfda Safety
A Phosphate binders for preventing and treating chronic kidney disease-mineral and bone disorder (CKD-MBD)
Meta Analysis The Cochrane database of systematic reviews 2018
A Calcium supplementation (other than for preventing or treating hypertension) for improving pregnancy and infant outcomes
Meta Analysis The Cochrane database of systematic reviews 2024
A Calcium supplementation (other than for preventing or treating hypertension) for improving pregnancy and infant outcomes
Meta Analysis The Cochrane database of systematic reviews 2015
A Vitamin and mineral supplementation for maintaining cognitive function in cognitively healthy people in mid and late life
Meta Analysis The Cochrane database of systematic reviews 2018
A Calcium supplementation during pregnancy for preventing hypertensive disorders and related problems
Meta Analysis The Cochrane database of systematic reviews 2025
A First-line drugs for hypertension
Meta Analysis The Cochrane database of systematic reviews 2018
A Dietary calcium supplementation for preventing colorectal cancer and adenomatous polyps
Systematic Review The Cochrane database of systematic reviews 2008
A Calcium and vitamin D for increasing bone mineral density in premenopausal women
Systematic Review The Cochrane database of systematic reviews 2023
A Beta-blockers for hypertension
Meta Analysis The Cochrane database of systematic reviews 2017
A Calcium channel blockers versus other classes of drugs for hypertension
Systematic Review The Cochrane database of systematic reviews 2021
View all evidence for Calcium →

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