Affiliate disclosure
i-Supplement is an independent supplement comparison site. When you continue to a retailer from one of our links and buy something, we may earn a commission from that retailer. This never changes the price you pay, and it never changes where a product ranks in our comparisons — ranking is driven only by elemental yield, chemical form, certification and price.
As an Amazon Associate, we earn from qualifying purchases. We also hold, or have applied for, affiliate relationships with the other retailers listed on this site — iHerb, Myprotein and Bulk Supplements — either directly or through affiliate networks such as Awin and Linkwise. Commission is paid by the retailer out of their own margin, at no extra cost to you. Where a programme has not yet approved us, the link still takes you to the same verified retailer product page and simply earns us nothing.
How results are ranked
Ranking is determined by elemental dose per serving, chemical form, published third-party certification and cost per serving. No brand or retailer can pay for placement, and commission never moves a product up or down. We compare only the retailers we have links with, so this site is not a view of the entire market.
Prices and availability
Prices come from retailer feeds and are refreshed automatically. Every price on this site is shown with the date and time it was last checked and is subject to change. If a price has not been refreshed in the last 24 hours we mark it as possibly out of date. Prices and availability shown are captured at the time stated and may differ at the retailer. The price on the retailer's own page at the moment of purchase is the one that applies. Products listed as out of stock are never presented as buyable.
Where our links take you
Every buy button names the retailer it sends you to. We do not hide or disguise destinations, and no retailer page is ever opened without you clicking. Your basket on this site is an aggregator only: it groups what you picked by shop and hands you over to that shop's own checkout. We never take payment and never process your card details.
Offers and emails
We only publish or email discounts that a retailer has actually announced. We never invent coupon codes, and our emails link back to this site rather than carrying affiliate links.
Independence
We are not affiliated with, endorsed by or operated by any retailer or brand named on this site. All trademarks belong to their owners and are used for identification only.
Who operates this site
i-Supplement is an independent supplement comparison service operated from Athens, Greece. It is not a shop: no stock is held, no payment is taken and nothing is shipped by us. Registration and tax details are provided on request at contact@i-supplement.com.