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BioGaia Gastrus Chewable (Mandarin) 30 Tablets

BioGaia® Gastrus contains Lactobacillus reuteri DSM 17938 + Lactobacillus reuteri ATCC PTA 6475, sourced from human origin. Targeted support with this unique Lactobacillus reuteri strain combination.Formulation notes:  Contains only probiotic strains of human...

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BioGaia® Gastrus contains Lactobacillus reuteri DSM 17938 + Lactobacillus reuteri ATCC PTA 6475, sourced from human origin.

Targeted support with this unique Lactobacillus reuteri strain combination.

Formulation notes: 

  • Contains only probiotic strains of human origin: Lactobacillus reuteri DSM 17938 + Lactobacillus reuteri ATCC PTA 6475 (both strains isolated from breast milk)
  • Provides evidence-based probiotic strains with clinical data to support their use.
  • Delivers probiotic strains that survive transit through gastrointestinal (GI) tract without significant loss of potency (CFUs).
  • Contains two probiotic strains shown to colonise the GI tract and adhere strongly to mucosal layer.
  • Ensure only complementary probiotic strains are combined for optimal efficacy.
  • Delivers a scientifically validated daily dose of 200 million organisms (CFUs) in a convenient one-a-day dose.
  • Does not require refrigeration, for ease of use and convenience.
  • Sweetened with xylitol.

Each BioGaia® Gastrus chewable tablet contains:

Lactobacillus reuteri (DSM 17938) +

100 million organisms (CFUs)

Lactobacillus reuteri (ATCC PTA 6475)

100 million organisms (CFUs)



  • Isomalt
  • Sustainably sourced fully hydrogenated palm oil
  • Ascorbic acid
  • Calcium stearate
  • Mandarin flavouring
  • Mint flavouring

  • Vegetarian formula.
  • No added: wheat, yeast, soy, dairy and animal products, lactose, egg, nuts, artificial colours, flavours, or preservatives, magnesium stearate or SLS.


Adults & children: Consume 1 chewable tablet daily, with meals, or as directed by your healthcare professional.


  • Use only as directed and if symptoms persist consult your health professional.

Storage Instructions:

  • Store below 25°C in a cool, dry place.
  • No refrigeration required.
Shipping & Delivery
We offer free shipping for Australia and New Zealand orders over $250. International shipping also available.

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Customer Reviews

Based on 5 reviews
Merryl s.
L Reuteri

I have been an avid purchaser from NourishMeOrganics for years & they have never disappointed. Always fast deliveries & well packaged. I'll be back. Thank you guys

Hi Merryl. Thank you so much for being a loyal customer of NourishMeOrganics. We're thrilled to hear that our fast deliveries and packaging have always met your expectations. We appreciate your support and can't wait to have you back! Cheers!

Ben W. (Sydney, AU)
so far so good

easy to take and so far seems to be somewhat helpful in relieving IBS symptoms

We're glad to hear that you're finding our Biogaia Gastrus product easy to take and that it's providing some relief for your IBS symptoms. Thank you for sharing your positive experience so far. If you have any further feedback or questions, feel free to reach out. We appreciate your support!

Debz (Sydney, AU)
Sleeping so much better

After reading the Super Gut book i was curious about trying L.Reutteri and am happy to report that it definitely has improved my sleep quantity and quality. For a very long time I’ve struggled to sleep well, but after taking this probiotic things have greatly improved. I tried to make yoghurt using these tablets but failed epically. Who’d have thought what’s happening in your gut can impact your sleep.
Recommend 100%

Thank kindly Deb...we have an epic interview with Dr William Davis, author of Super Gut coming up soon on our Gut Health Gurus Podcast (on Apple, Spotify and Youtube)

Anita L. (Stony Creek, AU)
Product and Podcasts

I bought the Bio Gastrus tablets to make L Reuteri ‘yoghurt'. I am still in the process of perfecting this with my third trial currently on the way. I received the products within a couple of days and very happy with the service. While looking on the Nourishme Organics website, I discovered the Gut Health Guru Podcasts. I found these podcasts to be extremely interesting and I recommend them to anyone interested in improving their health.

Thank you so much glad you are enjoying The Gut Health Gurus Podcast

Michelle C. (Perth, AU)
BioGaia Gastrus

These are the best probiotics I have tried and I've tried lots! Bloating gone in 2 days.

Thank you Michelle...wonderful result with BioGaia Gastrus