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For those on antibiotics
OptiBac Probiotics Probiotics http://www.optibacprobiotics.hk

For those on antibiotics

Product rated 5.0 from 7 reviews

HK$ 249.00

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What's it for?

Probiotic to maintain healthy levels of friendly bacteria. Take during and after your antibiotics course.

Who's it for?

Anyone, aged 1 year and over, taking a typical course of antibiotics.

Each capsule provides

4 billion live probiotic cultures, guaranteed until end of expiry.

Probiotic for those taking antibiotics 

For people who are taking antibiotics (e.g. amoxicillin, penicillin, tetracycline, doxycycline), or who have recently finished an antibiotic course, the probiotics in this supplement are especially selected to maintain a good balance of friendly bacteria in the intestinal tract during and after your course of antibiotics.

Probiotics and antibiotics: Antibiotics do not distinguish between friendly and harmful bacteria and therefore kill off many probiotics in the gut, leading to side effects such as thrush, diarrhoea, or poor immunity.   OptiBac Probiotics For those on antibiotics promotes a healthy balance of good bacteria, thereby supporting health, digestion and immunity for patients taking antibiotics.

How does For those on antibiotics work?

Lactobacillus acidophilus Rosell-52 is a natural resident of the intestinal microflora; this specific probiotic strain has been well studied to survive gastric acidity and bile salts expected at mealtimes and to reach the intestines without damage. In addition, L. acidophilus Rosell-52 is tested to ensure adherence to the cell wall lining of the intestines; where it inhibits intestinal pathogens and supports immune cells.

Lactobacillus rhamnosus Rosell-11 is a natural component of the friendly bacteria in the intestines; this species is one of the most studied in the probiotic world. L. rhamnosus Rosell-11 has been proven to resist bile and gastric acidity over pH 3 - therefore if taken at mealtimes (when pH is around 4), it will pass through the stomach without being damaged. The probiotic strain L. rhamnosus Rosell-11 is able to bind strongly to the intestinal cells and helps maintain a good digeston and a strong immune system.

Read Scientific Research on probiotics and antibiotics

Lactobacillus acidophilus Rosell-52
Lactobacillus acidophilus Rosell-52


Can be given to adults and children (from 1 year and over) with the following recommendations:

  • Take one capsule daily with breakfast*, until antibiotics course is finished, and preferably for one week after.
  • Continue taking until pack is completed and add a second pack if the antibiotic treatment lasts more than one week.
  • OptiBac Probiotics may be used on an ongoing basis.

* Can be taken at the same time as antibiotics - this product has been clinically trialled alongside antibiotics and found to reach the gut alive.

Note: Any customers taking particularly longterm and/or high strength antibiotics may want to consider taking OptiBac Probiotics For daily wellbeing EXTRA Strength instead. Also, for anyone unable to swallow capsules, the contents of the capsule can be mixed with a cold meal or beverage.


It is not recommended to give live cultures to patients who: are severely immunosuppressed, have pancreatitis, are in the Intensive Care Unit, have blood in the stool, have central venous catheters; or to post-surgical patients with open wounds, or infants with short bowel syndrome; unless under a doctor's care.

Full Ingredients

Filler: potato starch; vegetarian capsule: hydroxypropyl methylcellulose, titanium dioxide; live cultures: (Lactobacillus rhamnosus Rosell-11, Lactobacillus acidophilus Rosell-52); anticaking agent: magnesium stearate; antioxidant: ascorbic acid.

Each capsule guarantees 4 billion micro-organisms.


Like the rest of the OptiBac Probiotics range, this does not require refrigeration. 

Store out of direct sunlight.

  • Vegetarian
  • Vegan
  • No added sugars
  • Gluten free
  • Yeast free
  • Suitable in pregnancy
  • Live cultures
  • Natural bacteria

Customer Reviews — 7 Reviews

  • For those on antibiotics 5 product Mrs A.Lawrie 2014-06-17

    Posted by Mrs A.Lawrie 5 years ago

    5 stars

    "I have a very bad cough and I have reluctantly taken antibiotics. Dreading the usual thrush I have taken at the same time the Optibac capsules (one a day) and so far have no signs of urinary problems or itching. What a relief. I would thoroughly recommend these magic capsules."

  • For those on antibiotics 5 product Trish Shepard 2012-04-26

    Posted by Trish Shepard (Canterbury) 7 years ago

    5 stars

    "I took these after a bad bout of whooping cough last year (yes I am an adult!) and found they were so useful. I usually have a dreadful time with antibiotics and have to take anti-fungals afterwards. But not this time. I would definitely repeat the experience."

  • For those on antibiotics 5 product Andrea Clough 2012-01-09

    Posted by Andrea Clough (London) 7 years ago

    5 stars

    "I had to have an operation for which I was given penicillin, and I was dreading it, as I have always had a bad reaction to antibiotics, and become quite ill. I was amazed to have virtually no symptoms at all this time after taking your probiotics. Fantastic."

  • For those on antibiotics 5 product Katie 2012-01-06

    Posted by Katie (Kent, England) 7 years ago

    5 stars

    "I took these in conjunction with antibiotic therapy and noticed that I was less bloated and had less diarrhoea than I have previously had from taking antiobiotics. Very easy to take and very happy with the result"

  • For those on antibiotics 5 product Janice 2010-05-12

    Posted by Janice (Northern Ireland) 9 years ago

    5 stars

    "I used these whilst taking antibiotics, I usually get thrush when I take antibiotics but because I took For those on antibiotics as well, I did not get thrush this time. Can I also say Annie who answered my call when I phoned was very helpful and friendly and told me where I could get For those on antibiotics"