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Optibac Probiotics: The UK's No.1 bestselling probiotic brand - Optibac — 18 websites ranked by shared content topics, category and on-page relevance.

Each result shows its full tech stack, contacts and AI-policy — not just a name · Browse all sites in Herbs And Supplements →

Domain	Match	Title	Country/Lang	Category	AI files	Contact	AI-protection
culturelle.com ↗	68 match 1 shared topics	Culturelle® \| Trusted OTC Probiotic Supplement Brand	en	herbs-and-supplements Shopify	robots llmsaihumans	emailphone	none
neuromind.co.uk ↗	67 match 1 shared topics	Vitabiotics® \| UK's No.1 Vitamin Company	United Kingdom en	herbs-and-supplements Shopify	robotsllmsaihumans	emailphone	none
tundrex.co ↗	67 match 1 shared topics	Tundrex — The Best Kept Secret in Probiotics	Colombia en	herbs-and-supplements	robotsllmsaihumans	emailphone	none
biohmhealth.com ↗	67 match 1 shared topics	BIOHM Health \| Gut Health & Probiotic Supplements	en	herbs-and-supplements Shopify	robotsllmsaihumans	emailphone	none
web-ozelyt.com ↗	66 match 1 shared topics	Ozelyt CS 20b® \| Official Site \| Daily Probiotic for Digestive, Immune, and Vaginal Health	en	herbs-and-supplements	robotsllmsaihumans	emailphone	none
jarrowveggiecapsules.com ↗	66 match 1 shared topics	Jarrow Probiotics Capsules and Multivitamins - Jarrow	en	herbs-and-supplements WordPress WooCommerce	robotsllmsaihumans	emailphone	none
slimleaf.info ↗	66 match 1 shared topics	SlimLeaf (official website) – Gut Health & Probiotic Support	en	herbs-and-supplements	robotsllmsaihumans	emailphone	partial · 8
oxalobacter.com ↗	65 match 1 shared topics	Oxalobacter formigenes Research-Use Probiotic \| Oxalobacter.com	en	herbs-and-supplements WordPress WooCommerce	robotsllmsaihumans	emailphone	none
ozzelyt.com ↗	65 match 1 shared topics	OZELYT \| USA NATURAL PROBIOTIC SUPPORT	en	herbs-and-supplements	robotsllmsaihumans	emailphone	none
progurt.eu ↗	65 match 1 shared topics	Human-Origin Probiotics — 1 Trillion CFU – Progurt	European Union en	herbs-and-supplements Shopify	robots llmsaihumans	emailphone	none
p2probioticpower.com ↗	65 match 1 shared topics	Natural Probiotics Products For Body, Allergies, Cleaning and Pets - Kid Safe	en	herbs-and-supplements BigCommerce	robotsllmsaihumans	emailphone	none
website-primebiome.com ↗	65 match 1 shared topics	PrimeBiome™ Official \| Gut-Skin Axis Probiotic Gummy Formula	en	herbs-and-supplements	robotsllmsaihumans	emailphone	none
chill.com ↗	65 match 1 shared topics	Chill.com \| The Best Natural Supplements & Healthy Alternatives Store	en	herbs-and-supplements Shopify	robots llmsaihumans	emailphone	none
curcuminassociation.org ↗	65 match 1 shared topics	Global Curcumin Association – Protecting and promoting the curcumin category	en	herbs-and-supplements WordPress	robotsllmsaihumans	emailphone	none
markcures.com ↗	65 match 1 shared topics	Nutritional Supplements & Health Products \| BestHealth	United States~ en	herbs-and-supplements Magento	robotsllmsaihumans	emailphone	none
markcures2.com ↗	65 match 1 shared topics	Nutritional Supplements & Health Products \| BestHealth	United States~ en	herbs-and-supplements Magento	robotsllmsaihumans	emailphone	none
affordablesupplements.com ↗	64 match 1 shared topics	Premium Vitamins & Supplements, Manufactured in the USA – Trio Nutrition	en	herbs-and-supplements Shopify X-Cart	robotsllmsaihumans	emailphone	none
adaptwellness.com ↗	64 match 1 shared topics	Premium Adaptogens and The Best Functional Mushroom Supplements – Adapt Wellness	en	herbs-and-supplements Shopify	robots llmsaihumans	emailphone	none

How the match score works

Each match is a 0–100 similarity score — the higher it is, the more two sites resemble one another. It’s computed automatically from our own crawl data (never from what a site says about itself) by combining several independent signals, so a high score means several of them point the same way:

shared topics how many of the same fine‑grained content topics (IAB sub‑categories) both sites cover — the main signal.
same category whether they sit in the same business / industry category.
content & title how closely their titles and page descriptions line up in wording and meaning.

No single signal decides the result — they’re blended together. Treat the score as a way to rank candidates rather than an absolute percentage; the chips on each result show which signals contributed.