How we compare

The same barcode. The same UK market. Independent retailer groups.

What counts as a match?

Offers are grouped by a validated GTIN barcode within the UK and GBP. Related storefronts count as one retailer group. Contradictory brands or variants are excluded. Similar names alone never establish an exact match.

Read the price in context

Prices are item prices reported by licensed Awin retailer feeds. Each offer shows its observation date. Delivery, taxes not established by the feed and optional services are not estimated. Confirm the exact product, stock and final total at the retailer.

We remove offers seven days after the source observation. Missing or expired offers are not shown as zero prices. One retailer is labelled as one offer, rather than a price comparison.

Check the details that matter

Match the exact formulation, strength, pack size and number of servings. These are factual product price comparisons, not advice on benefits, suitability or dosage. Read the label and speak to a qualified healthcare professional about suitability, interactions or use during pregnancy.

Commercial independence

We may receive commission through links labelled “Affiliate link”. Offers are sorted by item price, never by commission. We do not sell the products or handle orders, returns or warranties. Contact the retailer for those services.

Coverage

This specialist catalogue is a reviewed selection from the 37X private affiliate catalogue, not every UK retailer or every available product. Our initial launch uses Awin offers permitted for relevant 37X sites. Site-specific CJ and Rakuten channels are excluded unless permission is established for this domain.