How we are funded

This is a courtesy translation. If there is any discrepancy, the versión en español prevails.

Dosis Daily S.L. funds the site with its own resources. There is no advertising or sponsored content. The profiles link to products in online shops, but today we earn no commission on any of those links.

Each profile publishes what to look for on the label. In “Where to find it” we recommend products that meet it, in online shops and in the brands’ own shops: HSN (ships from Spain), Life Extension Europe (from the Netherlands), Thorne (from the United States; check delivery and customs to your country), iHerb (from the United States, with VAT included in the price), Vegavero (the brand’s own shop; ships from Germany), WeightWorld (the brand’s own shop in Spain), Naturitas (Spanish shop; that is where we link to Solgar products) and spermidineLIFE (the brand’s own shop; ships from Austria).

• We check the label published by the shop: chemical form, amount per serving and that it does not contain other actives that contradict the profile.
• At most three products per active. The quality of the active comes first (form, studied extract, purity); then, where possible, we choose one high-end, one mid-range and one budget option, based on the cost per day at the reference dose.
• If a product only partly meets the criteria, it is shown as “With caveats” and we explain why. If no product fits yet, the profile says so: we do not fill the gap.
• We do not include products with ingredients that need an EU authorisation they do not yet have.
• The links do not change the order, the reference dose or the classification of the evidence. The quiz decides which actives to suggest with the same rules; products are chosen afterwards, by composition.
• Shops change formulas and product lines. If a product stops meeting the criteria, it is removed from the profile. Each profile shows the date the labels were last checked: check the one on the pack before you buy.

We may join these shops’ affiliate programmes in the future. If you buy through an affiliate link, the shop pays us a commission and it costs you nothing extra. When that happens, we will say so here with the name of each programme, and each affiliate link will be marked next to the button itself. The selection criteria will stay the same.

If a brand wants to suggest a product to us, the answer is the same for all of them: it has to meet the criteria. Write to us at [email protected].

Last updated: 2 November 2026.