Optibac Probiotics Reviews 

7,755
TrustScore 5 out of 5

4.8

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Review summary

Created with AI, based on recent reviews

Looking at 825 reviews, reviewers overwhelmingly had a great experience with this company. Customers frequently praise the highly effective health products, noting significant improvements in gut health, daily wellness, and immune support. Consumers also appreciate the fast, reliable delivery service and the responsive support team that make online purchasing completely seamless. However, some people mentioned frustrating issues with subscription management, such as receiving unwanted oversupplies or struggling to update delivery details and addresses. A few reviewers were dissatisfied with occasional delivery failures or packages being sent out even after direct requests to stop them. Some consumers observed that certain courses did not provide the expected health benefits for their specific symptoms.

What people talk about most

Product

Reviewers highlight positive aspects of product, noting that the supplements are beneficial for gut health... See more

Delivery service

Reviewers express high satisfaction and praise the reliable delivery service, noting that packages arrive... See more

Quality

People report positive experiences with quality, highlighting that the supplements are effective and deliver... See more

Service

Consumers find service to be positive, consistently describing it as first-class, quick, and efficient.... See more

Order

Clients share positive opinions on order, highlighting that the online ordering system is quick, easy, and... See more

Reviews shaping this summary

Rated 5 out of 5 stars

I have my probiotics on a subscription basis. I am notified when they are despatched and receive via Royal Mail seamlessly. The service is first class. More importantly the product is benefici... See more

Company replied

Rated 5 out of 5 stars

I find the service direct from Optibac very good. They keep me up to date with my delivery schedule and offer rewards for loyalty. As for the product itself, it's helped with my gut health tremendousl... See more

Company replied

Rated 5 out of 5 stars

One week flat - no sadly they don’t make your belly disappear in a week but this is a brilliant 7 day course to take if things haven’t been going well down there, they help with the uncomfortable feel... See more

Company replied

Rated 5 out of 5 stars

Having suffered for many years and been to the doctor several times and prescribed various medications (none of which helped) I came across Optibac Every Day on the internet which I decided to try - a... See more

Company replied


Company details

  1. Vitamin and Supplements Store

About Optibac Probiotics

Written by the company

Join the millions taking friendly bacteria supplements.

At Optibac Probiotics we use specific probiotic strains such as Lactobacillus acidophilus NCFM® to target specific health conditions. Our expertise and over 20 years of experience in live cultures mean that we have a wide range of products for all ages and lifestages including pregnancy and children.

We use the most researched strains of friendly bacteria so you can find the right natural solution for you. Our strains are scientifically proven to reach the gut and complement the natural microbiome.

You can also be confident that we prioritise natural ingredients and take care to avoid hidden sugars and other nasties. And all of this comes in eco-conscious packaging, including glass jars, compostable pouches and FSC®-certified cartons.

Our team of qualified Nutritional Therapists are available Monday to Friday via email, phone and live chat for product advice.

We also offer a subscription service where you can save 15% on your products and get free delivery.

Winner of The King's Award for Enterprise 2024 for impressive international growth.

As a business we donate at least 1% of our annual turnover to charities. To date we have donated over £1,750,000 to charitable organisations around the world.

Backed by science

Written by the company

We only use the most highly researched strains of friendly bacteria
All proven to complement the natural microbiome.
Friendly bacteria experts
We have specialised in creating friendly bacteria supplements for over 20 years. Our specialist range is designed to target individual needs and life stages.
Free 1:1 supplement advice
Discuss your needs with an Optibac nutritional expert. We know that choosing the most suitable friendly bacteria supplement for yourself or a loved one can be a little overwhelming.

UK Delivery

Standard UK delivery is free when you spend £30.

The delivery discount is automatically applied at the checkout.

Contact info

4.8

Excellent

TrustScore 5 out of 5

8K reviews

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4.8

All reviews

(7,755)

760 reviews in the last 12 months

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Rated 2 out of 5 stars

Terrible admin

The product itself is probably good, although how you assess that, Im not sure.
Customer Service on the other hand, is extremely poor. I started a subscription back in May. Every month, I've had to contact them and ask them to send it as it never arrives.
I'll give them one last chance and if they cant get their act together, I will go elsewhere.

September 1, 2026
Optibac Probiotics logo

Reply from Optibac Probiotics

Dear Skolldoll,

Thank you for taking the time to leave a review. I am sorry that you have experienced issues with your subscription being sent, I appreciate that must be very frustrating for you.

I have checked your online acount after I replied to your email on Tuesday, and I can see that your order was generated and sent, with your next order scheduled for 30 days time. If you have any further issues that you need help with, please do contact us again and we will be happy to help you.

With warm wishes,

Louise
Nutrition Team

Rated 5 out of 5 stars

On time and on point

On time and on point. Thank you.

August 14, 2026
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Reply from Optibac Probiotics

Dear Barbara,

We are so glad to hear that everything was on time and on point for you. Thank you for your wonderful feedback.

Best Wishes, Hannah,Nutrition Team

Rated 5 out of 5 stars

great product …

love Optibac ,been using for few years now , and can feel the difference 👏

August 30, 2026
Optibac Probiotics logo

Reply from Optibac Probiotics

Dear Mrs Fisher,

We are so happy to hear you've been using our product for years and can feel the difference! Thank you for sharing your positive experience with us.

Best Wishes, Hannah,Nutrition Team

Rated 5 out of 5 stars

Happy customer

Been taking these probiotics for few years, feel they work for me.
Regular subscription - always on time and well packed. 😁

August 13, 2026
Optibac Probiotics logo

Reply from Optibac Probiotics

Dear Karen,

Thank you for the review. We truly appreciate your loyalty and kind words about our subscription service.

Best Wishes, Hannah,Nutrition Team

Rated 5 out of 5 stars

This company is reliable

This company is reliable, products are good and staff are pleasant , obliging and helpful, no complaints at all.

August 28, 2026
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Reply from Optibac Probiotics

Margaret McLeman,

We are so pleased to hear that you've had such a positive experience with us. Thank you for sharing your kind words!

Warmest of Wishes,
Charlotte, Nutrition Team

Rated 5 out of 5 stars

Useful savings on subscription

I use Optibac once a day because I have to take a daily antibiotic and I have Crohn’s disease. I feel that the probiotic helps to keep my symptoms in remission and I am glad of the price reduction gained by being on subscription. Win-win really.

August 11, 2026
Optibac Probiotics logo

Reply from Optibac Probiotics

Dear Chris,

We are so pleased to hear that you have found our products to be helpful for your symptoms. It's wonderful to know that you have been benefitting from our subscription price reduction too. Thank you for sharing your positive experience!

Best Wishes,
Charlotte, Nutrition Team.

Rated 5 out of 5 stars
Optibac Probiotics logo

Reply from Optibac Probiotics

Dear Anne ,

We are so pleased to hear that you are happy with our service and products. Thank you for taking the time to share your positive feedback with us.

With Best Wishes,
Charlotte, Nutrition Team

Rated 5 out of 5 stars

Excellent Product and Excellent Service

Excellent product - I have been using Optibac Probiotics for over a year and am very happy with them. They come regularly and I have never run out, it’s all automatic and works very well.

August 7, 2026
Optibac Probiotics logo

Reply from Optibac Probiotics

Dear Katrina,

We are delighted to hear you've been a happy customer for over a year and that our product and subscription service are working so well for you. Thank you for your wonderful feedback!

Warmest Wishes,
Charlotte, Nutrition Team

Rated 5 out of 5 stars

Very easy and quick to set up a…

Very easy and quick to set up a repeating order.

August 26, 2026
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Reply from Optibac Probiotics

Dear Mandy,

We are so glad to hear that setting up your repeating order was both a smooth process for you. We truly appreciate your positive feedback!

With Best Wishes,
Charlotte, Nutrition Team

Rated 1 out of 5 stars

No difference whatsoever

Waste of money, the Every Day EXTRA probiotics did not help any of my symptoms, in fact made them worse. Customer service also couldn’t care less and said ‘we can make no guarantees regarding their efficacy’ and told me to contact the retailer. It is your product so you should take responsibility for it. Anyway I have gone back to my original probiotics which are great. Will not be recommending Optibac to anyone.

Also, just to add I did complete 3 months taking the probiotics and saw absolutely no difference at all.

Update: the below useless response is just copied and pasted from the same email they sent me back in June!

June 9, 2026
Unprompted review
Optibac Probiotics logo

Reply from Optibac Probiotics

Dear Sarah,

Thank you for taking the time to leave your feedback, and we're sorry to hear that you didn't see the results you were hoping from this product.

These are natural food supplements and not medications, so we can make no guarantees regarding their efficacy. Ultimately, everyone will have an individual response to foods, food supplements and even medications.
Although the clinical trial results that support our product range are very positive, we can’t be sure everyone will see benefits because we all respond in a different way, depending on our underlying health conditions, diet, and lifestyle.

But all of our customers are welcome to contact Optibac, and one of our team of qualified health professionals will be delighted to advise on the best choice of product for your needs, and the best way to use it.

With Best Wishes,
Charlotte, Nutrition Team.

Rated 5 out of 5 stars

I have my probiotics on a subscription…

I have my probiotics on a subscription basis. I am notified when they are despatched and receive via Royal Mail seamlessly.
The service is first class.

More importantly the product is beneficial. Helps to build a stronger immune system and for my partner no symptons from bloating which he had before starting the course.
I would highly recommend probiotics as an aid to improved health.

August 25, 2026
Optibac Probiotics logo

Reply from Optibac Probiotics

Dear ELAINE,

We are so delighted to hear about your positive experience with our subscription service and the benefits you and your partner have seen from our product. Thank you for your wonderful feedback!

Best Wishes, Hannah, Nutrition Team

Rated 5 out of 5 stars

Quick delivery and it will be easy…

Quick delivery and it will be easy doing it. On your website as it’s really hard getting it in shops so thank you

August 24, 2026
Optibac Probiotics logo

Reply from Optibac Probiotics

Dear Sarah,

We are so pleased to hear that you received your order quickly and that ordering from our website was easy for you.

Thank you for the wonderful feedback!

With Best Wishes,
Charlotte, Nutrition Team

Rated 5 out of 5 stars

Optibac One Week Flat

I have used Optibac One Week Flat for a number of years now when I need it. It’s particularly helpful prior to an occasion, holiday, during a holiday or whenever I feel the need. It certainly does its job and I’d highly recommend it. The customer service from Optibac is also excellent.

August 6, 2026
Optibac Probiotics logo

Reply from Optibac Probiotics

Dear Marianne,

Thank you for your wonderful review. We are so pleased to hear that our product has been helpful for you, especially for special occasions and holidays. It's great to know you've also had a positive experience with our customer service.

Thank you for your support over the years!

Best Wishes,
Charlotte, Nutrition Team

Rated 5 out of 5 stars

Very smooth buying experience

Very smooth buying experience. Great product and everyone should give it a try. thank you.

August 6, 2026
Optibac Probiotics logo

Reply from Optibac Probiotics

Dear Zexi Yu,

We are so happy to hear that you had such a smooth buying experience and are enjoying our product. We appreciate your recommendation.

Best Wishes, Hannah, Nutrition Team

Rated 5 out of 5 stars

Website very good

Website very good. Easy to find a product. Very helpful information attached to all products too. Option to chat feature a great idea.

August 24, 2026
Optibac Probiotics logo

Reply from Optibac Probiotics

Dear Fiona,

We are so pleased to hear that you found our website easy to navigate and the product information helpful. We're glad you appreciate the chat feature too!

Best Wishes, Hannah,Nutrition Team

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