Live Amazon price · product details checked 5 September 2026
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We keep Bio-Kult Boosted Extra Strength Probiotic Supplement – 14 on our probiotics & gut health shelf alongside 56 others, and rank it on rating, review volume and live price rather than on the brand. The manufacturer puts it this way: Bio-Kult Boosted provides 14 live bacterial strains at four times the concentration of the original Bio-Kult, offering enhanced everyday support for gut health and digestive balance. Our advanced multi-strain formulation contains vitamin B12 which contributes to normal function of the immune system and to the normal energy-yielding metabolism. That is the maker talking, not us, so read it as a claim rather than a finding. It holds 4.8 out of 5 on Amazon from 59 ratings. Where that leaves it next to the rest of the shelf is set out below.
Taken from the wording on the listing itself and the price we track, not from a brand claim about value. How we rank →
Across the 57 rated probiotics & gut health products we track, the middle of the pack sits at 4.5 out of 5. This one scores 4.8. Top quarter of the shelf. In an aisle where nearly everything rates well, the distance above the middle is the part worth reading, and this one has it.
59 people rated it, where the shelf median is 258. That's enough for the score to mean something without being the last word on it.
On money, this sits in the top third of a shelf running from £5.79 to £150, with the midpoint around £14.99. It costs more than most and is rated above most, so the premium at least tracks something buyers recognise.
Worked out from the 57 probiotics & gut health products we track, not from the brand's own claims. How we rank →
Taken from the product listing via Amazon's product API. These are the seller's claims, not our test results.
Short on time? Our best probiotics uk shortlist narrows this shelf down to a handful.
