Jettie Baby Spring/Summer Probiotic & Prebiotic

Jettie Baby Spring/Summer Probiotic & Prebiotic

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The first two years of your baby’s life are instrumental in setting them up for a healthy future. And if your little one was born via c-section or is formula-fed, probiotics are non-negotiable. Achieving optimal gut health can be done through probiotic strains that are:

  • Diverse
  • Alive
  • Clinically proven, never generic

Hitting these three points is a lot of work, especially if you’re a new parent. That’s why we do the work for you. Jettie’s formulation exposes tiny guts to diverse strains needed to reach optimal gut health.

Subscriptions renew automatically every month.

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Free shipping to 48 Contiguous United States. Shipping fees will apply to Alaska, Hawaii, Canada.

No worry guarantee

If you don’t love Jettie , you don’t pay for it. If you need a break, you can skip, pause or cancel anytime.
Ingredients & Clinicals

Bacillus subtilis DE111

Promotes a healthy microflora in the gut and supports overall health. Spore based probiotic strain that's stable under harsh conditions. 

Lactobacillus rhamnosus GG

Helps with allergic symptoms and supports a healthy immune function. May help with oral health through balancing the mouth's bacterial growth.


Bifidobacterium lactis (formerly B. infantis) VK2

Naturally found in milk and can help digest sugar content in breast milk or formula.

Bifidobacterium lactis HN019

Supports nutrient absorption which is essential for development. Studies have shown that children who have taken this strain have had less severe illness and fewer high fevers.


Bifidobacterium lactis Bi-07

Supports a stronger immune system which can contribute to fewer sick days and a reduction in antibiotic use.



Besides the benefit of feeding probiotics, it may help improve mineral absorption and contribute to lower levels of serum cholesterol, triacylglycerols, and phospholipids.



Organic rice hull, Inulin (Jerusalem Artichoke)

What is Jettie?

Jettie is the world's first seasonal probiotic + prebiotic for infants, toddlers, and kids. It is a flavorless powder with no added sugar that blends well into your child’s beverage of choice: milk, water, smoothie or 100% fruit juice. Go ahead, sneak it in anywhere!

Are probiotics safe for toddlers and kids?

Jettie probiotics are completely safe for babies, toddlers and kids. In fact, probiotics play an essential role in creating a diverse, balanced microbiome that supports improved immune function, neurological development, digestion and nutrient absorption.

Do probiotics help with diarrhea and constipation in kids?

Sick of monitoring your little one’s diaper and bathroom habits like it’s your job? The strains in Jettie are clinically proven to support digestion and limit constipation and diarrhea.

Why are probiotics important for an infant/child?

Probiotics are the helpful bacteria that make up your microbiome. Babies (infants & toddlers) are susceptible to distress because they’re born with a sterile GI system, so probiotics have been shown to protect from infections and may help build their immune system. For kids, probiotics decrease gut bacteria that can cause infection. Probiotics can also relieve constipation, colic, acid reflux, and diarrhea. They’ve been known to prevent eczema and allergies.

Are the ingredients non-GMO, and gluten, dairy, and allergen free?

Yes, yes and well… it depends. Jettie Baby Fall/Winter contains Human Milk Oligosaccharides (HMO) which are found naturally in breast milk and encourage the growth of good bacteria in the gut. The HMO in Jettie Baby Fall/Winter is  fermented from cow’s milk. If your child has a severe reaction to dairy, we’d recommend Jettie Baby Spring/Summer which does not contain HMO and is available year round.

What can I expect during the first few weeks of Jettie?

When your child starts Jettie, you’re introducing a whole host of beneficial microbes that should quickly begin to multiply in their digestive tract. These friendly flora work hard to crowd out the types of bacteria and yeast you don’t want in their body. That’s great news—however, while they are taking hold and colonizing the digestive system, your child might experience a little gas and changes in the frequency and texture of their bowel movements. This is totally normal as the body adjusts to these changes.

For children over the age of 6 months, we recommend upping your child's fluid intake during this time. Your child’s stomach will adapt and you’ll see (hear? smell?) less gas and things will settle. You might see more frequent or less frequent bowel movements (depending on their schedule) as the body is adjusting to the new gut health. Better absorption of nutrients means their bowel movements become more efficient or better quality.

How much should I give my infant/child?

Jettie makes it super easy to give your child probiotics. You'll mix one stick pack of Jettie in with your infant's bottle or child's beverage of choice just ONCE a day.

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Free Shipping

Free shipping to 48 Contiguous United States. Shipping fees will apply to Alaska, Hawaii, Canada.

No worry guarantee

If you don’t love Jettie , you don’t pay for it. If you need a break, you can skip, pause or cancel anytime.


The gut is the control center of our bodies. We believe that a healthy gut is the biggest step one can make for a healthier body. The experts below agree, and recommend Jettie.


"The first 1000 days of life is a crucial time to build the foundation of a healthy gut. I recommend Jettie’s flavorless powdered prebiotic + probiotic for babies and kids because it's the only product on the market to rotate its strains every season. Changing the strains your gut is exposed to is crucial for gut health. Jettie’s proven strains support immune and digestive systems from day 1." -Dr. Ruhoy

Ilene S. Ruhoy MD, PhD, is the founder of the Center for Healing Neurology, where she takes an integrative approach to helping her patients heal and achieve optimal health. After receiving her medical degree, Dr. Ruhoy earned a PhD in Environmental Toxicology, and collaborated with the Environmental Protection Agency (EPA) to publish peer-reviewed research on the toxic effects of pharmaceuticals and chemicals, and how physicians can help minimize these effects through dosing and prescribing. Dr. Ruhoy is trained in both pediatric and adult neurology at Seattle Children’s Hospital and the University of Washington. She bridges the gap between allopathic and alternative medicine to offer a holistic approach to neurological health and healing. Her approach has been internationally recognized by patients all over the globe.


Alexandra Turnbull is a Registered Dietitian and mom to a toddler and infant. Pre motherhood, she obtained her bachelor of science in dietetics from St. Catherine University, where she then went on to obtain her credentials as a Registered Dietitian Nutritionist. She has worked in long term care, clinical, weight management and now in school food service. She is an expert in infant and child nutrition and is passionate about helping parents find ways to feed their families with more confidence and less stress. Personally, Alex loves to eat to live and believes that all foods can fit within a healthy lifestyle. She encourages families to find simple and realistic ways to work towards a healthier and happier life.


These stories are brought to you by happy customers, as told by their parents.

“My stress and anxiety that used to revolve around her bowel movements is gone!”

mother of Minnie (2)

“I loved the idea of giving my kids a probiotic daily, and such a good one to boot!”

mother of Sawyer (2)

“Jettie made him even more regular than he was.”

mother of Gordie (2)

“A great probiotic! And flavorless - the milk 'tastes just like milk'!”

father of Scarlett (9)

“I really trust these probiotics!”

mother of Brooks (2.5)

Lisa, Jettie Customer
Emily, Jettie Customer
Kelsey, Jettie Customer
George, Jettie Customer
Margaret, Jettie Customer