In short

You can take two or more OptiBac products at the same.

It is possible to 'mix and match' products within the OptiBac range, and it is extremely difficult, if not impossible, to overdose on friendly bacteria.

In depth

There are certain scenarios where customers may particularly wish to take more than one live cultures supplement at once:

  • 'Saccharomyces boulardii' (formerly known as 'For bowel calm') is a friendly yeast, with a different mode of action to other microorganisms (most of our products are friendly bacteria), and can therefore be safe and appropriate to take alongside any other supplement in the OptiBac range. Many of our customers take both 'For every day EXTRA Strength' and 'Saccharomyces boulardii' on a regular basis.


  • Many people have difficulty choosing between 'For every day' (for general friendly bacteria support) and 'For daily immunity' (made to support immunity). If you are having trouble deciding between the two try 'mixing and matching' by taking one capsule of each product every day. This way, your body receives Vitamin C from 'For daily immunity', with additional live cultures & FOS fibres from 'For every day'.


  • Certain live cultures supplements are designed and shown to target specific areas of the body, for example OptiBac 'For women' has been proven to survive to reach the vaginal flora. In this case customers may wish to take 'For women' as well as one of the other OptiBac supplements which are designed to reach the gut. Many of our female customers take 'For women' every day as well as one of our general daily supplements such as 'For every day'.

Taking other brands

If you are taking a different brand of live cultures and wish to take one of ours alongside it, there is very little risk. Live cultures are natural supplements, and our range provides from 2.5 billion to 100 billion microorganisms per daily dose - whereas the human body is home to an incredible 100 trillion microorganisms. Whilst we cannot speak for other brands, and it would always be best to check with the manufacturer in question, at the end of the day, there is generally no harm in taking more than one live cultures supplement at the same time. Similarly you can regularly consume fermented foods and drinks, as well as taking a live culture supplement. For further reassurance, head over to the Probiotics Learning Lab: Can I overdose on live cultures?


On the other hand, if you're taking two different supplements in order to get 'enough' live cultures, do rest assured that we always stress that it is more important to find the right types of live cultures for you, with a high quality supplement, than it is to worry too much about trying to get a certain number of billions. Bacteria after all, multiply once they reach the gut and adhere to the gut wall lining. For more information read the Billions Myth section of our Probiotics Myths... BUSTED pages, in the Probiotics Learning Lab.