We earn commission on purchases made through our links. It never affects ranking: tables are ordered purely by price per dose, and no retailer or brand can pay for position.We earn commission when you buy through our links. It never affects the ranking. Full disclosure.

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Affiliate disclosure

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It does not affect the ranking

Tables are ordered purely by price per dose, calculated the same way for every product.
Retailers and brands cannot pay for placement, and there are no sponsored or “featured” rows.
Retailers that pay no commission are ranked exactly the same way as those that do.

Amazon

As an Amazon Associate I earn from qualifying purchases.

“Buy this product” links go to the same product’s page on Amazon, matched by hand from the barcode or the label; “Find it” links are an Amazon search. Neither carries a price, and Amazon’s price is not part of the comparison, so a product may be cheaper or dearer there.

The full method is on the how we compare page.