Below you'll find our most-recent customer reviews and feedback on the overall OptiBac Probiotics range, brand and service. These reviews are collected via an external site to ensure unbiased, genuine feedback. Read more about how we collect reviews.

If you'd like to leave a review on one of our products, please visit our online shop.

  • Thankful you ship to the States

    Discovered OptiBac for Traveling Abroad when in London. They don't sell this product in the States, so we've been ordering direct. We've taken this product with us to Hong Kong, Thailand, Mexico, and Colombia and it works like a charm. We've never had any tummy problems. The shipping has also been reliable and quick.

    Verified Customer
  • Very happy

    Order handled perfectly. Probiotics themselves also seem great - I'm on a month's course of antibiotics and haven't had any side effects whole I've been taking them together.

    Verified Customer
  • Instantly gave me more energy,.

    Instantly gave me more energy,.

    Verified Customer
  • Excellent products

    Excellent products, choice of delivery options.

    Verified Customer
  • Great probiotics

    I order probiotics for all my family from optibac and fully recommend them. The everyday ones have really helped with tummy issues. The 'for women' ones are great, I used to get recurring yeast infections but since taking them I've been fine. I took the recommended 2 a day for 7 days and now take 1 every other day. It works out a but expensive but well worth it to me.
    Customer service is great and any time I've calles for advice they've always been really helpful.

    Verified Customer
  • These made no difference to my bloated …

    These made no difference to my bloated tummy. I expected more after reading such positive reviews.

    Verified Customer
  • Response from OptiBac Probiotics

    Dear Rachel,

    Thank you for taking the time to share your experience, and I’m sorry that you didn't achieve the desired results when taking our ‘One week flat’.

    We'd always advise that, if your bloating symptoms aren't responding to digestive aids, you should have a chat with your doctor to rule out any medical causes.
    Of course, it may be that this is not the best product for your needs at this time. I'll contact you directly and we can discuss your current health priorities in more detail, to make sure you've chosen the most appropriate product from the range.

    Thank you again for taking the time to leave your feedback.

    With kind regards,

    Kerry Beeson BSc (Nut.Med.) Nutritional Therapist
    Head of Customer Care
    OptiBac Probiotics

  • Amazing product..

    Amazing product... works very well and I wouldn't hesitate to recommend this to anyone who may have PH problems.

    Verified Customer
  • Good product but expensive

    I love the product and have been using for a long time, but I do find the cost somewhat prohibitive for those of us that have to use the product day in, day out.

    Verified Customer
  • Response from OptiBac Probiotics

    Dear Helen,

    Thanks for taking the time to leave your valuable feedback. This is much appreciated.

    I'm sorry that you feel our products are expensive; however, we're constantly reviewing all aspects of our range, taking into account the quality and viability of the products, and trying to balance this with value and affordability. Overall, we feel that it is most important to offer quality strains which remain viable until the date of expiry; therefore we only use strains of probiotics that have been extensively laboratory tested and clinically researched. Consequently our range is supported by the results of around 160 finished product human clinical trials, more than any other brand available in the UK.

    In order to ensure that these probiotic strains remain effective right up until the date of expiry, we house them in 'state-of-the-art' CSP packaging to keep them fresh and stable throughout their very long shelf lives. Taking all of this into account, we are happy that the retail price is very competitive and compares favourably to other products in the marketplace. I hope this helps to explain a little more about the costs involved in producing a top quality product. Additionally, we do offer some of the products in larger sizes for those who use them regularly, and these packs work out to be even more cost-effective.

    Thanks again for your feedback, however, which we do record and use to constantly improve the quality of our products.

    With kind regards,

    Kerry Beeson BSc (Nut.Med.) Nutritional Therapist
    Head of Customer Care
    OptiBac Probiotics

  • I recommend this company!

    The advice I got was well informed, clear and in no way over-hyped the products I bought. The products were delivered promptly and correctly. They did what they were intended to do - on the first occasion to rebuild a gut immune system badly damaged by the antibiotics used, three years before, to eliminate Helicobacter pylori. I bought beneficial bacteria and a yeast to trap and reduce the population of malignant bacteria. Quite soon, my gut settled down and health greatly improved. A year later, a new infestation by Helicobacter pylor occurred - not surprising: the antibiotic treatment has only an 80%-90% elimination rate. I obtained more of the yeast. The infestation is reducing very satisfactorily.

    Verified Customer
  • IBS diarrhoea

    I've suffered with IBS with diarrhoea for many years. After reading about Saccharomyces boulardii I thought I had found something that could help. After taking the product for 5 days my symptoms were much worse to the point I couldn't be far from the … Read More

    Verified Customer
  • Response from OptiBac Probiotics

    Thank you for taking the time to leave your feedback.

    I'm sorry that you experienced diarrhoea whilst taking the product. This isn't a common reaction to this probiotic yeast, which is actually registered as a medicine in some countries, where it's used in hospitals to help with diarrhoea symptoms.

    Probiotics have been shown to be very safe supplements to take by adults and children alike, and adverse reactions are very unusual, so it's worth considering whether the symptoms were caused by the introduction of new foods or other medications/supplements.

    Ultimately, the composition of our resident microflora is unique to each person, and so some probiotic supplements will suit us better than others. It may be that this product isn't the best one for your needs at this time.

    We'd always advise our customers to contact us directly if they have any queries or concerns about the products, to see if we can make suggestions which help them to achieve the best results, and to make sure that they're taking the most appropriate product at the correct dosage.

    I'll contact you directly to see if I can make any helpful suggestions.

    Once again, thank you for sharing your experience - we very much appreciate this as it helps us to improve both our products and service.

    With kind regards,

    Kerry Beeson BSc (Nut.Med.) Nutritional Therapist
    Head of Customer Care
    OptiBac Probiotics

Read all 1292 reviews on Trustpilot

Probiotic reviews

Our probiotics are reviewed through many different channels. Below we compile a list of some popular channels.

Reviewed by industry professionals

OptiBac Probiotics is reviewed, featured and endorsed by numerous industry professionals. Read on below to see a list of some professionals that have reviewed our probiotics:

Janey Lee Grace

Ian Marber

Kirsty Henshaw

Vicki Edgson

Press and Media mentions

Our probiotics have also been featured by numerous prominent magazines including but not limited to:

How we collect customer reviews


Our probiotic reviews are collected primarily through an open review community called TrustPilot. Using this independent service affords our customers a chance to hear from other real customers who have tried and reviewed our probiotics.

Our probiotic reviews collected through this service are verified to come from real customers meaning they are unbiased and trustworthy.

Our website

We also collect reviews on our probiotics directly on our website. This is a useful way of offering customers who purchase our products from independent retailers (are not verified to have purchased from us directly) a chance to leave feedback and share their success stories.

Using our website, both customers who are verified to have purchased from us directly and customers who may have purchased from other sources can both leave reviews and feedback on their experience with our products. Visit our online shop to review any of our probiotics you have taken.

Older Reviews

Below you'll find the reviews we collected on our website before we started using TrustPilot.

  • As a nutritionist I have been prescribing Optibac Bowel calm to a number of my IBS patients lately and it has proven very successful as a treatment for chronic diarrhoea so I'm delighted with this product and very interested in testing out other products in the future

  • Having suffered with IBS since I was a teenager (approx 30 years) I have tried everything to try and get it under control. Over the last seven months it has worsened, possibly due to stress of two house moves, a relocation and a new job. On the worst days I have been unable to leave the house for fear of not being near a toilet. I read up on probiotics again (I had tried them before but with not much success) and discovered your website. So I thought I'd give them another go and ordered the Bowel Calm and the Daily Wellbeing Extra. What can I say? I am absolutely amazed. They arrived on Friday, on Sunday my husband and I went for a 6 mile walk, something that hasn't been possible for months. I am so glad I have found these products, they really are starting to put an end to years of misery! Thank you.

  • I gave my 6 month old girl Optibac Probiotics for her severe eczema. She had already had two infections and two courses of antibiotics at 4 months and 5/6 months but the second course was taken with probiotics and she has not had a skin infection ever since. Considering the severity of her eczema (two GPs saying it was the worst case they'd seen) this is amazing. She is now 1 and still taking daily sachets of Optibac, her eczema is clear (also thanks to the right steroid cream I should add) and I cannot thank them enough. She is also never ill (touch wood) despite her 4 year old big sister bringing home various preschool bugs. Her immune system has been given the boost it needed and then some - I recommend Optibac to everyone, they think I must be on commission! Thank you once again, and especially thank you to Steve Payne who recommended them in the first place and even purchased our first sachets for us. So grateful.

  • Response from OptiBac Probiotics

    Thanks for the review Katie, we'll be sure to pass the message onto Steve.

  • My husband and I have used several of Optibac's excellent products. We can recommend Bowel Calm and Well being in particular for helping to keep your digestive system on the right track. I've also taken the Extra Strength versions from time to time when a harder hit of probiotics is needed. We all suffer from an upset tum from time to time, and I've found that taking this great product can nip it in the bud. Things are usually back to normal within two or three days. These are excellent products with an excellent team of advisors behind them. Recommended to one and all.

  • After a course of tablets from my doctor I began suffering from diahorrea to the extent i was worried i had IBS. A friend who promotes organic foods "a little too much" recommended probiotics. After the second tablet of the extra strength ones my bowel movements were back to normal. I claimed co-incidence until 6 months later it cured the same problem again. I am a chartered engineer and not taken in by gimmick tablets. I hate to say it I now swear by these tablets

  • Two of us took them as prescribed and had no problems while in China. 3 days after stopping them I got stomach cramps, lasting for over a week. I later found out that this happened to my friend as well. I wonder to what degree they take over the system and whether there should be a gradual winding down of them.

  • Response from OptiBac Probiotics

    Hi Dave, were you taking the travel probiotic? I must say that this feedback is completely unprecedented. Generally speaking there is no need to 'wind down' after probiotics, and they certainly should not cause stomach cramps. If you would like to discuss further please call us, 01264 339 770, perhaps we can offer you a different product to try next time. Warm regards, Soraya

  • after years of holiday tummy every time i travelled away from home i tried travla. we holidayed in india & i ate salads,fruit, seafood & everything your recommended to avoid, i have to say my tummy has never been more settled & i felt generally better all round.

  • I also wish these products were available in Australia, but I am happy to order on line to receive them from you. Thanks.

  • Your website is an inspiration, easy to navigate and love the 'latest news' giving up-to-date findings on trials and research. Thank you so very much

  • I am very pleased with your products. I have always had a 'nervous' stomach to go along with asthma and later in life horrible eczema. Many years ago I got serious poisoning from of all things bad potatoes, and since then my life has been truly wrecked by being so ill. I must have ingested kilos of lotomil and loperamide. Even though I do drink litres of water enthusiastically I very often would be in a horrible state of dehydration. Everything seems to get me, many foods, stress and worst of all I have a bad allergy to aspirin and salicylates which is very difficult to get around as they're everywhere. ...I had heard that this probiotic range is good and I just went for it. I really don't buy into the drinks as being that helpful but the information about the products on your website gave me hope. I bought the For daily wellbeing, the For daily wellbeing EXTRA Strength, and For bowel calm. I have taken the EXTRA Strength and the bowel calm so far and am almost euphoric! I am very much looking forward to the new regularity product as it gives me a feeling of saftey to have products I can use if there's an emergency and the extra strength, bowel calm and regularity products should keep even a nervous Nelly like me happy. I feel so good after what was an awful weekend and I just can't stop smiling. ..Thanks for the excellent backup as well as the products. Kean.

  • I really love OptiBac and I really miss it here. There are no substitutes which could compare to it in Australia.

  • My healing practitioner Gabriele A. Franklin recommended to me all kinds of OptiBac products a long time ago. For the last 4 years they have become a firm fixture of every day and I'm satisfied with your high quality products. When I hear about friends on antibiotics, OptiBac's the first word leaving my mouth ;)

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