How does VitRank work?
We compare supplements on actual value — not sticker price.
1.Daily-updated data
Our prices and product data are refreshed every day for Dutch and European webshops that ship to the Netherlands.
2.Normalize per category
For each category we pick the right unit: price per day, per serving or per mg active compound. Only then is comparing fair.
3.Rank by value
Products are ranked by value per euro. Shipping costs are included where possible.
Formulas per category
Per category we use the most relevant unit:
Price per daily dose (recommended serving). Optional Science Mode: price per mg withanolides at your target.
Price per 1000 mg daily dose.
Price per 400 IU daily dose (Dutch RDA).
Price per 5 g creatine monohydrate daily dose.
Price per day at 1000 mg EPA+DHA.
Price per 20 g protein serving.
Frequently asked questions
How does VitRank compare supplements fairly?+
We normalize every product to the same unit within a category — for example €/daily dose for ashwagandha or €/1000 mg for vitamin C — before comparing. Shipping costs to the Netherlands are included where known.
How often are prices updated?+
Prices and stock information are refreshed daily for Dutch and European webshops that ship to the Netherlands. Always check the shop's product page for the definitive price.
Does VitRank sell supplements?+
No. VitRank is an independent comparison service. You buy directly from the webshop. We may earn a commission via affiliate links — the price you pay does not change because of this.
What's the difference between KSM-66 and Sensoril ashwagandha?+
KSM-66 and Sensoril are two different patented forms of ashwagandha extract with different withanolide standardization levels. KSM-66 is typically standardized to ~5% withanolides, Sensoril to ~10%. They are not directly comparable — that's why we also rank them per group.
What are withanolides?+
Withanolides are the active compounds most often measured in ashwagandha research. Our 'science mode' computes price per mg of withanolides so you actually compare on active compound rather than pill size.
Stack builder
Combine multiple categories and compare: one shop for everything (lower shipping) or the absolute cheapest mix per category. Shipping is amortized per day.
Build your stack →