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Teens' Gut Sustainer

Teen’s tribiotic gummy designed with clinically studied pre+ post+ and probiotics for digestive, immune, and skin health. 30 day supply of tropical-flavored gummies for ages 13+.

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45 day money-back guarantee1.

Works in tandem with our teens daily multivitamin.

Over 55 million gummies sold in 2023.

Join over 600,000 parents who switched to First Day!
Ingredients

We're thoughtful about our ingredients! We use scientifically studied strains for the most impact on your teen’s gut health.

teens tribotic supplement facts

Livaux® (Prebiotic): Clinically studied prebiotic that helps increase probiotics in the microbiome, promote regular bowel movements, and support the relief of constipation.

SNZ 1969® (Bacillus coagulans Probiotic): Clinically studied probiotic that supports digestion, immunity, and oral health to help fight cavity-causing bacteria.

FloraSMART® (heat-treated Lactobacillus Casei 327 Postbiotic): Clinically studied postbiotic shown to support digestion, healthy skin, and the relief of dry skin.

Other Ingredients: Organic Tapioca Syrup, Organic Cane Sugar, Water, Pectin, Natural Flavors, Citric Acid, Natural Colors, Organic Carnauba Wax

Free From The Top 9 Allergens: We are dairy-free, soy-free, egg-free, gluten-free, peanut-free, tree nut-free, fish-free, shellfish-free, and sesame-free.

Subscribe & Save Details

Receive our eco-friendly refill pouches every 30 days on a pediatrician-recommended schedule.

Plus, you'll receive these benefits:

  • Save an additional 15% every single month.
  • Delivered right to your doorstep for free.
  • Easy management - skip or pause whenever you need.
  • VIP access to sales, gifts, early access & more.
  • Cancel anytime.
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gut feeling sus?

Teenagers are hard to understand sometimes, but their diet is no secret. Even when us parents try to feed them fruits & veggies, they just love to eat like garbage (but hey, we’ve all been there!)

Which means their guts may not be in the greatest shape. That’s why we created these tasty gummies with pre+ post+ and probiotics to clean up that sus gut.

Introducing Teen Gut Sustainer – the World’s First Teen Tribiotic!
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No Gelatin
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No GMOs
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No Corn Syrup
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Allergen-Free
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Gluten-Free
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Made In The USA

Formulated For A Healthy Gut Microbiome To Support:

Digestion – Getting your teen to give up junk food may be a battle. But with tribiotics, you can help relieve constipation, bloating, diarrhea, and stomach aches.

Skin Health – Healthy skin starts in the gut! Add tribiotics to skincare routines for glowing, hydrated skin.

Immunity – Make missed school days a thing of the past! A science-based tribiotic supports a strong immune system.

Nutrient Absorption – Supercharge the power of your teen’s daily vitamin! Tribiotics support your gut's ability to absorb nutrients.

Oral Health – Feel confident knowing your teen's next dental visit won't be alarming. With a science-based tribiotic, you can help fight cavity-causing bacteria.

Total Teen Health with Tribiotics

Probiotics

Your teen is battling turbulent emotions, embarrassing body changes, and that daunting place known as high school. The last thing they need is gut troubles weighing them down. 

Enter SNZ 1969® – the clinically proven probiotic for teens. With scientific precision, it tackles stomach woes, hydrates skin, and supports immunity. Say goodbye to health hurdles and hello to teenage triumphs with SNZ 1969®!

Prebiotics

Your teen's gut needs a gourmet feast to power good bacteria. That’s where the prebiotic powerhouse, Livaux®, comes in to save the day! As the food source of probiotics, Livaux® is clinically proven to support digestive health. It tackles pesky bathroom struggles and helps your teen stay regular. 

With Livaux® on their side, your teen can focus more on acing school tests and less on that sus gut!

Postbiotics

The teen’s battle for glowing skin is finally over! Introducing FloraSMART® – the game-changing postbiotic for teens. As the last step in the pre+ and probiotic cycle, postbiotics are crucial to digestion and skin health.

With clinically proven FloraSMART®, your teen's gut health can flourish for radiant skin!

A complete 3-in-1 approach to support digestion, immunity, and skin health

A complete 3-in-1 approach to support digestion, immunity, and skin health

Probiotics

Prebiotics

Postbiotics

Effectively Dosed For Teens

Vegan & Gluten-Free
FirstDay logo. Dark Blue

Clinically-Proven Strain

Yes

Yes

Yes

Yes

Others

Generic

No

No

No

No

Teens Defense Starter Pack

Our Teen Gut Sustainer + Daily Kickstart Multivitamins are the ultimate tag team! 

  • Teen’s Daily Kickstart Multivitamins – fills in nutrition gaps... especially if your teen refuses to eat anything but chips and pizza
  • Teen’s Gut Sustainer Tribiotic – supercharges nutrient absorption from food and vitamins

The Teen's Defense Starter Pack includes a 30-day supply of each to cover your teen’s health all month long. 

Give your teen the ultimate health boost with the Teen Defense Starter Pack!

Bundle & Save

45-Day Money Back Guarantee

We’re confident your teen will love their tribiotic. But we get it – teens are super picky! So give it a try and if you’re not happy, just send it back for a full refund. 

ORDER TODAY

Our Scientific Advisors

  • Dr. Ed Giovannucci, MD, MPH, ScDHarvard University

    Dr. Ed Giovannucci,MD, MPH, ScD
    Harvard University

    Dr. Giovannucci researches the intricacies of nutrition and lifestyle and is passionate about bringing healthier lifestyles to families everywhere. At home, he has 2 lovely children who love their veggies but also have a soft spot for chocolate!

  • Dr. Lei Chen, MD, MHSYale University

    Dr. Lei Chen,MD, MHS
    Yale University

    Dr. Chen is a professor and a practicing pediatrician in emergency medicine. He's deeply passionate about child healthcare and travels the worldto help bring better access to health for all. He has fast-growing, twin boys who love building kayaks together with him.

FAQs

Who should take Teens Gut Sustainer?

Our team crafted the Teens Gut Sustainer for teens aged 14 and above.

Is the product free from common allergens, such as gluten, dairy, or soy?

Yes! Synthetic colors, High-Fructose Corn Syrup, GMOs, Gluten, Eggs, Tree Nuts, Wheat, Peanuts, Artificial Flavors, and Preservatives are a NO-NO here!

Can these be taken with other multivitamins/supplements?

Our Teens Gut Sustainer is like your ultimate sidekick, teaming up with your body to help keep your digestive and immune systems running smoothly. Plus, you can totally mix it with your regular multivitamin for that extra boost of awesomeness! Teens Gut Sustainer actually improves the body's ability to absorb nutrients.

Do these need to be refrigerated?

Unlike some other probiotics, there is no need to refrigerate these! It's best to store them in a cool, dark place away from sunlight.

What clinical studies or research support the effectiveness of this product?

Oh, absolutely!

For Livaux® & gold kiwifruit: https://pubmed.ncbi.nlm.nih.gov/25931419/ https://pubmed.ncbi.nlm.nih.gov/29152256.
https://www.jfda-online.com/cgi/viewcontent.cgi?article=2095&context=journal.

For SNZ 1969®: https://www.ijhsr.org/IJHSR_Vol.12_Issue.3_March2022/IJHSR036.pdf

For FloraSMART® (heat-treated Lactobacillus Casei 327): https://www.sciencedirect.com/science/article/abs/pii/S1756464618302664?via%3Dihub

What is the full ingredient list?

Ingredients: Livaux® (New Zealand Gold Kiwifruit powder) 250mg
FloraSMART® (heat-treated Lactobacillus Casei 327) 50mg
Bacillus Coagulans SNZ 1969® (1.5 Billion CFUs) 15 mg

Other Ingredients: Organic Tapioca Syrup, Organic Cane Sugar, Water, Pectin, Natural Flavors, Citric Acid, Natural Colors, Organic Carnauba Wax

Where are these manufactured?

Made with care right here in the USA, our products are crafted in a top-notch facility that maintains exceptional standards holding both CGMP certification and FDA registration. This just shows how serious we are about quality. We're all about keeping it real! What you see is what you get—no secrets, just clear info about every ingredient in our supplements. 😊

More questions? Find answers on our FAQ page.

Customer Reviews

Based on 15 reviews
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Diana P.
Kids multi

My twins love these gummies , and since they start taking them , my picky one became more hungry for healthy foods like vegetables and fruit. It’s an amazing change and I’m very happy, thank you First Day !

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Callie T.
Great Teen Gut Fixer!

My son is in a lovely stage of being extremely limited with his diet and these vitamins have changed the game for both of us! After taking these I'm actually seeing him eating better and trying more options. He just needed his gut fixed and being 13 I know his body is changing drastically so these vitamins are getting him reset and back on track. It's improved so many aspects of his life also helping with skin, mood, etc. I'm so thankful to have found these for him and will absolutely be incorporating them into my other two sons' diets when they reach this age also!

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Darlene H.
These gummies are great!

My son has been taking the teen multivitamin for quite sometime now. He enjoys the fact that he hasn’t gotten sick in a long time. He says he has more energy. And they taste good too!

J
Jeananne D.
Best vitamins for our Autistic Teen

My 13 year old autistic son's aggressive behavior has improved significantly with these vitamins. We will continue to purchase these as long as they keep making them. I do not recommend purchasing off Amazon but rather the First Day website. The vitamins I got from Amazon were not right. The packaging was First Day but they were different and smelled bad and his behavior worsened for the 3 months he was on those ones. The ones direct from First Day are a Godsend :)

L
Lucia M.
Fantastic Supplements

My 2 boys have always taken vitamins but as I researched more about the quality of supplements I wanted my teens to have, First Day definitely stood out. From our first 30 day supply I could see a difference and my boys felt it too. More energy, and dare I say better focus!! These are now a staple of our daily nutrition for our teen athletes!!

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1 We offer a 45-day satisfaction guarantee for returns. It covers 45 days starting from the day that you place an order and includes only the very first purchase of any product so that families can try our gummies - for any reason you aren't happy with your vitamins. Please note that we will refund up to $100 so that you can try up to 3 bottles of our gummies risk free. If you would like to order more than 3 bottles in your first order, we recommend that you ordering less so that your family can try them first. Thanks so much for your understanding!

** Compared with: Flintstones Vitamins Chewable Kids Vitamins; Nordic Naturals Nordic Berries; SmartyPants Kids Formula