Supplement Label Scanner: Grades, Flags, and Interactions
A supplement label scanner reads the barcode or Supplement Facts panel on a bottle and maps ingredients to reference data. In Nutrient Wise, that flow produces an A through E grade, ingredient-level notes, and optional flags when something in the product may conflict with medications you saved. This page explains those pieces without making health outcome claims.
Disclosure: This guide is published by HK Applications LLC, the maker of Nutrient Wise. Competitor details come from each company's public website or app store listing as of October 2026. This is informational content, not medical advice.
Scanning workflow
- Scan the barcode on the bottle (or search the database on the homepage features list).
- Review the grade shown as A through E, generated from ingredients and amounts compared to reference sources described in the app.
- Open ingredient details for breakdowns and links to deeper research, including our public ingredient library.
- Check flags for additives, certification matches, or other markers the app surfaces in the score breakdown (per release notes on the App Store).
- Add medications once so Stack Checker can compare every new scan against your saved list.
What the grade means
The homepage FAQ describes a simple A through E system based on ingredient lists and dosages versus reference materials. It is an informational shorthand, not a medical recommendation. Tap through sub-scores in the app for dose adequacy, formulation quality, additive notes, and similar categories mentioned in App Store release notes.
Flags and interactions
When you use My Medications and Stack Checker, the app can highlight possible interactions or overlaps between products. These warnings are starting points for a conversation with your prescriber or pharmacist, not definitive clinical decisions.
Missing products
If a barcode is not in the database, the App Store description explains that you can photograph the front and back of the label to submit it for addition.
Compare other tools in our 2026 scanner roundup or read how scanning differs from Labdoor lab tests.
What Nutrient Wise does
Nutrient Wise is a supplement label scanner for iOS and Android. You scan a barcode to see an A through E grade, ingredient breakdowns, and optional alerts when a product may interact with medications you save in the app (Stack Checker). Data is drawn from public reference sources such as NIH and FDA materials. The app is subscription-based ($3.99/month or $29.99/year per the App Store listing) with barcode scanning and a product database. See our supplement label scanner guide for how scanning and grades work.
Frequently asked questions
Does scanning replace reading the physical label?
No. Always read the manufacturer label and follow storage and serving directions printed on the package.
What barcode types work?
The App Store listing states support for most common retail barcode types used on supplement packaging.
Is the grade the same as FDA approval?
No. Dietary supplements are not FDA-approved like drugs. Grades summarize publicly available reference information.
Where can I learn about an ingredient?
Use the free ingredient library on this site for deep dives on individual compounds.