What it checks
- Duplicates: the same nutrient hidden across multiple products.
- Stacking risk: daily totals that may exceed established Tolerable Upper Intake Levels.
- Likely gaps: nutrients you may be under-getting depending on your diet — for example B12 on plant-based diets, or vitamin D with little sun.
How it works
1. Tell us your stack
Add each supplement, dose, and how often you take it. Add your age, sex, and a few diet and lifestyle notes.
2. We compare against evidence
Your inputs are mapped to nutrient totals and compared against widely cited reference intakes and upper limits.
3. You get a clear report
Each item is labeled with careful wording such as “may be redundant,” “depending on your diet,” or “consider discussing with a clinician.”
Frequently asked questions
Is the supplement checker free?
Yes. The core stack check is free and takes about two minutes. We may earn a small commission if you choose to buy through a retailer link.
What does the checker look for?
Overlapping ingredients across products, daily totals that may exceed established upper limits, and common gaps based on your stated diet — for example B12 on a strict plant-based diet.
Is this medical advice?
No. VitaCheck is educational only. Always confirm changes with a qualified clinician, especially during pregnancy, nursing, chronic illness, or prescription medication use.