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The UK's No. 1 bestselling brand
of friendly bacteria supplements^
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Rated 'Excellent' on Trustpilot
4.8 stars (based on 5,691 reviews)
Scientifically proven to reach the gut
& complement the natural microbiome
FREE UK DELIVERY on orders over £40
and 14-day hassle-free returns
You're away from FREE UK delivery Free UK delivery (applied at checkout) on orders over £40.00
You have qualified for Free UK delivery
Subscribe & Save 15%
Research shows that it's best to take your friendly bacteria supplements every day and on an ongoing basis. Our subscription service makes this simple! Choose your favourite Optibac supplements and tell us how often you want them. We'll take care of the rest.
Why choose to subscribe?
When you subscribe to your favourite friendly bacteria supplements, you'll save 15% on all subscription orders as well as receive free standard delivery.
Simply choose your supplements, select your preferred frequency and we will make sure you don't run out.
Subscribe & Save is free, secure and you can cancel at any time.
Our most popular products on subscription
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![Every Day 90s]()
Every Day
A great daily supplement that is perfect for those wanting to top up their friendly bacteria with an all-round formula.
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![For Women 90s]()
For Women
Proven to reach the vaginal microbiome and complement the natural vaginal flora. Suitable during all life stages.
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![Baby Drops 90s]()
Baby Drops
Suitable for both breastfed and bottle fed babies, from birth. Easy to use, flavourless liquid drops ideal for tiny tummies.
Subscribe & Save benefits
Save 15% on your favourites
Great choices must be rewarded. We'll automatically apply your 15% discount on all subscriptions.
Never run out
We'll make sure a new delivery is sent out to you just in time, so you never run out of your favourite supplements.
Free UK delivery
Receive free standard UK delivery on all subscriptions orders.
Skip or cancel anytime
Want to skip a month or stop your subscription? No problem - you can skip or cancel at any time via your online account.
Easily update order size & frequency
You can add products and change your scheduled delivery dates whenever, by logging in to your account.
Email updates
We'll email you each time your subscription is shipped so you know to expect it soon.
Get started today
Select your favourite supplements and choose your preferred order frequency. You'll need to register for an account so you can manage your subscription.