Frequently asked questions


If you have placed an order before 1 p.m. Monday to Friday, your order will be packed and dispatched with your shipping method of choice the very same day. If you have chosen Royal Mail 48h, the package normally arrives within 48 hours from the time Royal Mail picked up the goods from our warehouse. For example, If you have placed an order on Saturday morning choosing Royal Mail 48H, our warehouse will pack your products on Monday and hand it over to Royal Mail in the afternoon. It is then Royal Mail’s responsibility to deliver the goods before Wednesday night.

Please note that due to the nation-wide shortage of truck drivers and bottlenecks in the delivery chain, lately we have seen an increase in delays with Royal Mail and other shipping providers, albeit this is not something we are responsible for.


Yes, you can choose to have them deliver every 1, 2 or 3 months.

Yes, you can choose to cancel your subscription at any time in our portal.

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You get your products delivered home, at the frequency you chose, without having to think about it. Also, you get a 20% discount!

BioGaia products

Limosilactobacillus reuteri (formerly known as Lactobacillus reuteri) is a probiotic bacterium that has co-evolved with humans since the beginning of time, and because of that it is adapted to its host. L. reuteri is one of the first bacterial species to naturally become established in the microbiota of the new-born. BioGaia’s probiotic products with L. reuteri are among the most scientifically well-documented probiotics in the world in terms of both efficacy and safety. To date, over 220 clinical studies with BioGaia’s L. reuteri-strains have been performed in approximately 19,000 people of all ages. Positive results have been shown for several gastrointestinal disorders, oral health, and bone health.

Limosilactobacillus reuteri (formerly known as Lactobacillus reuteri) is a probiotic strain that has been tested in more than 150 human clinical studies (May 2020). Products containing this strain are for example BioGaia Protectis baby drops and BioGaia Protectis tabs. The scientific designation of L. reuteri Protectis is L. reuteri DSM 17938.

Limosilactobacillus reuteri (formerly known as Lactobacillus reuteri) Gastrus is a combination of two probiotic strains, L. reuteri DSM 17938 and L. reuteri ATCC PTA 6475.

The main difference between Protectis and Gastrus is that they contain different probiotic L. reuteri strains, or combinations of L. reuteri probiotic strains.

- Protectis contains L. reuteri DSM 17938
- Gastrus contains L. reuteri DSM 17938 and L. reuteri ATCC PTA 6475

All BioGaia’s probiotic products have been tested in clinical studies and found safe and effective.

All BioGaia’s probiotic L. reuteri strains have been shown to survive in the human gastrointestinal tract and to temporarily colonise the small intestine. They have also been shown to have a positive effect on the microbiota composition.

The name BioGaia is made up of two words, Bio and Gaia. Bio stands for life and living organisms, natural, and ecological systems. Gaia, according to Greek mythology, is a goddess, the creator of all life, the sister of Eros and a personification of the Earth.

Since every gastrointestinal tract is unique some individuals might experience a temporary change in gut motility. BioGaia probiotics very rarely cause side effects in the amounts recommended for the products. Some individuals might experience gas (flatulence), but that generally disappears after a few days. No serious adverse effects have been observed in clinical trials up to the maximum tested dosage of 10 billion CFU per day.

All our commercial strains are of human origin, naturally colonize humans, and are therefore more likely to have a positive effect on human health. Health benefits have been shown in numerous clinical studies with BioGaia probiotics.

The bacteria are alive but in a dormant state. They become activated and fully metabolically active when they come in contact with the saliva. By the time they reach the stomach they can start to colonize.

Based on the results of clinical studies, the dose level of 100 million CFU/day has been chosen as a safe and efficient dose for Limosilactobacillus reuteri (formerly known as Lactobacillus reuteri) Protectis. The corresponding dose for L. reuteri Prodentis and Gastrus is 200 million CFU/day.

It is difficult to give an exact answer as the composition of each gut microbiota is unique. Depending on indication/symtom clinical studies have shown different results.* If you are a healthcare professional please read more about our clinical studies here.

*Due to the regulatory situation we cannot communicate the effect of our products or claim health benefits to consumers. In Europe the use of nutrition and health claims is regulated by the European Food Safety Authority (EFSA) and today there are no approved health claims for probiotics. 

The spots are not dangerous and the product can still be used. BioGaia Protectis tablets contains ascorbic acid, which is an antioxidant that contributes to the stability of the tablets. Over time the ascorbic acid oxidizes and the color becomes darker. This darkening is seen as small “spots” on the tablet.


Yes, BioGaia products can be taken together with antibiotics. Antibiotics disrupt the natural balance in the gut. As BioGaia products help to maintain a balanced gut microbiota, they may reduce common side effects of antibiotics. We recommend taking the antibiotic two hours before or after the probiotic.

Even an indigenous bacterium like Limosilactobacillus reuteri (formerly known as Lactobacillus reuteri) should be taken on a regular basis, since most people of modern society does not get colonized by L. reuteri during infancy. The epithelial lining covers our gastrointestinal tract and works like a skin on the inside of our bodies. The main task of our ”inner skin” is to differentiate between what should be absorbed and what should not be let into our bodies. Biopsies have shown that L. reuteri is temporarily binding to our epithelial lining. However, since the cells in our epithelial lining is replaced every fourth day, the majority of L. reuteri cells are also washed away within a week or so. Since L. reuteri colonization is transient, every day intake is recommended to ensure adequate and stable levels of L. reuteri in the gastrointestinal tract.

It does not matter if BioGaia’s probiotic products are taken with or without food. What is important is to take it on a daily basis.

The recommended daily dose of Limosilactobacillus reuteri (formerly known as Lactobacillus reuteri) Protectis is 100 million CFU (Colony Forming Units). This dose is provided by 5 drops of BioGaia Protectis drops or 1 BioGaia Protectis tablet.

Yes, it is safe to take BioGaia products together with pharmaceuticals and other supplements.*

*If you have any medical conditions, always consult your healthcare professional for advice.

The recommended dose of a probiotic does not depend on bodyweight. BioGaia’s clinical studies show efficacy with the same dose both in children and adults.

Clinical studies have shown that BioGaia Protectis drops are safe to give from day of birth.

Yes, the drops can be added to formula and/or breast milk. Do not add to liquids warmer than 37°C/99°F. If adding to liquids, make sure to consume within the same day.

• We strongly recommend giving our probiotic drops by spoon.
• Shake well for 10 seconds before each use to mix the bacteria culture with the oil.
• To dispense the drops tilt the bottle and give by spoon.
• Use 5 drops once daily.
• Do not add to hot drink or food as this may damage the live bacteria.


Exposure to high temperatures and/or high humidity will significantly shorten the shelf-life of the product. However, the product will still be safe to use.

BioGaia Protectis drops sold in the UK can be stored at room temperature.

If room temperature is above 25°C/77°F we always recommend storage in the fridge.

BioGaia Protectis baby drops should not be stored in the freezer, as this will significantly shorten the shelf-life of the product.


BioGaia Protectis drops and tablets do not contain lactose or milk protein. In the finished product the gluten level is below EU limit value for gluten-free products. As food regulation varies from country to country, the product labelling may differ.

Common allergens such as egg, peanuts, tree nuts, fish, shellfish and soy have not been used in the manufacturing of BioGaia products.

In BioGaia Protectis tablets neither milk protein nor lactose are detectable, and the gluten level is below EU limit value for gluten-free products. As food regulation varies from country to country, the product labelling may differ.


Probiotics are good bacteria that can be found in dietary supplements and sometimes in dairy products. Probiotics are defined as ”live microorganisms that, when administered in adequate amounts, confer a health benefit on the host.” (WHO/FAO 2002, Hill C et al. 2014). An important criterium for qualifying as a true probiotic is that health benefits have been proven in clinical studies. Furthermore, a probiotic product must contain the same bacterial strain(s) and the same dose that was used in the clinical studies.

Probiotics have shown beneficial effects in gastrointestinal disorders such as colic, constipation, and diarrhea. Promising results have also been shown for the maintenance of a normal immune function and protection against infections. Further, probiotics have  shown benefits in oral health. BioGaia offers clinically-proven and user-friendly probiotic products to consumers world wide. Due to the regulatory situation we cannot communicate the effect of our products or claim health benefits. In Europe the use of nutrition and health claims is regulated by the European Food Safety Authority (EFSA) and today there are no approved health claims for probiotics.

Probiotics are live microorganisms that, when administered in adequate amounts, confer a health benefit on the host. Prebiotics are fibres and carbohydrates that stimulate the growth of bacteria in the gastrointestinal tract.

Bacteria are classified into genus, species and strains. Probiotic strains of the same species have different characteristics, and may therefore have different health effects. For example, clinical studies with the two strains, Limosilactobacillus reuteri (formerly known as Lactobacillus reuteri) ATCC PTA 6475 and Limosilactobacillus reuteri DSM 17938, have shown different effects in clinical studies. That is why a probiotic product must be defined on strain level.

Multi-strain products containing several strains in high doses do not necessarily have a better effect than a single-strain product. Important criteria when choosing a probiotic product are:

• The probiotic bacteria must be defined on strain level

• The probiotic product must have been tested in human clinical studies, with the same dose and with the same bacterial strain(s) as in the commercial product.