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Make the right choice with recommendations you can trust, backed by expert testing.
Explore health recommendationsCan probiotics alone improve your gut health?
We've tested a range of those on the market to find out which ones are the best
Having worked at the BBC and in commercial radio before joining Which?, James produces our always-on podcasts, and oversaw the launch of our member-exclusive podcasts in 2025.
Probiotic foods and supplements can be pricey, and it's hard to cut through the clever marketing to know what's worth buying, and what's best left on the shelf.
In the fifth episode of a brand new series of our health and wellbeing podcast, we sit down with Shefalee Loth, a public health nutritionist at Which?, and Sophie Medlin, founder of City Dietitians, to explain what probiotics are and who should consider adding them into their daily routine.
Plus, for the first time, Which? has tested and reviewed probiotic supplements from a range of suppliers. We reveal some of the best on the market, plus which of those received the coveted Which? Best Buy.
The full podcast, which includes our test results, is available only to logged-in Which? users. If you're not a member, join Which? to instantly listen to the full podcast and gain access to all our product reviews – all with 50% off your first year's membership.
Click to download a transcript of this podcast.
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