FREE Gut Squad Starter Kit in your first order  ·  15% off every delivery  ·  FREE shipping on every subscription order FREE Gut Squad Starter Kit + 15% off FREE Gut Squad Starter Kit

4.8 from 2,324 reviews

A FREE Gut Squad Starter Kit for happier poops.

Tasteless prebiotic fiber for kiddos who struggle to go.Prebiotics for kiddos who can’t go.

Box 1 · today A Family Size tub of Daily Growing Up Prebiotics
  • DIY Stickers
  • 7 Stickpacks
  • Guide

+ FREE kit, a $30.00 value, first order only

  1. Then
  2. Box 2$59.50
  3. Box 3$59.50
  4. Box 4+$59.50

$59.50$70.00/ 4 weeksSave $10.50

Start today + FREE kit

15% off every delivery · skip or cancel anytime

“It just slides right out. No more painful, hard poops and he isn’t scared to poop anymore.”
Vanessa F., verified buyer
4.8★ from 2,324 reviewsRecommended by pediatriciansFREE shipping on every subscription order100k+ families servedTasteless & textureless3g prebiotic fiber per serving

Does this sound familiar?

Many families face these same challenges.

A little boy sitting on a sofa with his teddy bear, looking uncomfortable
  • Constipation

    Hard, uncomfortable poops

  • Withholding

    Holding it in out of fear

  • Irregular Pooping

    Inconsistent bowel movements

  • Potty Anxiety

    Avoiding the toilet

Start today + FREE kit

4.8 from 2,324 reviews

Time for Your Kid to Poop Better

Prebiotic fiber to support softer, more comfortable poops.

A Family Size tub of Daily Growing Up Prebiotics with the FREE Gut Squad Starter Kit: a DIY Sticker Pack, 7 travel stickpacks and the Constipation Guide
3g prebiotic fiber per serving, gentle on the gut, no added sugars
Prebiotic fiber for softer poops
Gut nourishing support for kids: 2'-FL HMOs and chicory root fiber
How to use: one serving for ages 1 to 3, two servings for ages 4 and up
Trusted by parents everywhere, 4.8 out of 5 stars
What to expect after six weeks of daily prebiotics
Pediatrician approved: Dr. Wendy Hunter, MD
Supplement facts for the Family Size tub
  • 1 serving, ages 1-3
  • 2 servings, ages 4+
  • Delivered every 4 weeks
  • FREE Shipping
My son had severe constipation issues and this product has helped him SO much! He is able to easily drink it and it has helped him tremendously! He is now going regularly, almost everyday!
Rebekah W. Verified Buyer

FREE Gut Squad Starter Kit included

Subscription

$59.50$70.00/delivery

1 Tub with 56 servings

Save $10.50
  • 15% off every delivery, every 4 weeks
  • Skip or cancel anytime in your account
  • FREE shipping on every subscription order

FREE in your first order: Gut Squad Starter Kit $30.00

  • DIY Sticker PackFREE
  • 7-count Travel StickpacksFREE
  • Constipation Guide (PDF)FREE
  • Delay or cancel anytime
  • FREE shipping
  • Results take 45+ days
  • Secure checkout
Why Begin Health
  • Research-backed prebiotic fibers formulated for growing bodies
  • Pediatrician recommended
  • No artificial ingredients
Benefits
  • Supports comfortable potty times
  • Supports healthy digestion
  • Natural and safe for daily use
  • Great for all ages 1+
Safety & Quality
  • Made in the USA
  • Third-party tested
  • Free from artificial sweeteners, dyes, and common allergens
  • May contain traces of milk
My son had severe constipation issues and this product has helped him SO much! He is able to easily drink it and it has helped him tremendously! He is now going regularly, almost everyday!
Rebekah W. Verified Buyer

Just 2 simple ingredients

Rooted in science, inspired by nature

2’-FL HMOs(Human Milk Oligosaccharides)

✓  Fuels Bifidobacteria & beneficial bacteria
✓  Supports gut balance & immunity

Sourced in Germany 🇩🇪

Chicory Root Fiber(Inulin), plant-based prebiotic

✓  Delivers 3g of prebiotic fiber per serving
✓  Gently softens stool & soothes discomfort

Sourced in Belgium 🇧🇪

3g of prebiotic fiber Made with HMOs Packaged in the USA 0g added sugar

Work with your kiddo’s body, not against it.

Laxatives help in the moment, not every day

Feature
Growing Up®
Prebiotics
Traditional
Laxatives
Gentle Support
YesNurtures the microbiome
NoOften abrupt & harsh
Gut Health
YesNatural, comfortable digestion
NoShort-term relief only
Long-Term Benefits
YesBuilds healthy poop patterns
NoTreats symptoms, not cause
No Dependency Risk
YesEncourages natural regularity
NoMay create reliance

How to Use

Blends seamlessly into their favorite foods

  • A toddler drinking from a blue cup

    Ages 1-31 serving

    One packet (or scoop) mixed into 4-6 oz of milk, water, or soft foods.

  • A smiling boy in a kitchen

    Ages 4+2 servings

    Two packets (or scoops) mixed into 4-6 oz of milk, water or soft foods, given at separate times.

Start slow: begin with ½ a serving for the first few days, then work up to a full serving.

What to expect

Studies show it takes 45 days of daily use to see best results.*

  1. Days 1-15Start slow & settle in
  2. Days 15-30Gut bacteria starts to shift
  3. 45+ DaysSofter and more comfortable stooling*

*In a clinical study, kids ages 2-5 who took inulin-type prebiotics had softer stools and improved bathroom habits after 6 weeks. Closa-Monasterolo et al., Int J Food Sci Nutr (2016). PMID: 27931142

Loved by parents just like you

Real reviews from verified Begin Health parents.

4.8from 2,324 reviews
  • 5 ★2,048
  • 4 ★195
  • 3 ★44
  • 2 ★11
  • 1 ★26

97%would recommend these products

A container of Begin Health daily prebiotic fiber supplement for kids, with blue and white packaging, sitting on a granite countertopYoung child holding a pink bowling ball in a bowling alley with purple lightingA hand holding a container of Begin Health growing up prebiotics supplement for toddlers and kids, showing the blue and white labeled product with nutritional informationOpen white cabinet shelves containing health supplement containers, water bottles, and storage items organized on multiple levelsFour purple packets of Begin Health growing up prebiotics daily supplement arranged on a marble surfaceA young child wearing glasses and a cream-colored hoodie stands smiling on a driveway in a residential neighborhood during golden hour, with a lawn and houses visible in the background.

Kelly B.Verified Buyer

ReviewingDaily Growing Up® Prebiotics
Whole Family / Unflavored

I recommend this product

Jun 18, 2026

Sanity Saver

This has literally saved my sanity. Finally a product that I can add to my son’s water and he doesn’t detect it. This has made his poops easier and regular. After YEARS, he’s finally pooping consistently, which is such a huge win and a relief for me and him. I can’t recommend this product enough.

A container of Begin Health daily prebiotic fiber supplement for kids, with blue and white packaging, sitting on a granite countertop

Page G.Verified Buyer

ReviewingDaily Growing Up® Prebiotics
Family Size / Unflavored

I recommend this product

Apr 22, 2026

Finally! Something that works!

My daughter struggled with constipation and withholding for 2 years. We resorted to giving her MiraLAX daily which upset her stomach and had unpredictable results. I came across Begin Health when I was at my wits end and was willing to try anything. I’m so glad I did because we were able to stop the MiraLAX for good after starting Begin Health. It does take about a month like for the prebiotics to really start working so don’t give up if you don’t see results right away.

Young child holding a pink bowling ball in a bowling alley with purple lighting

Lauren B. B.Verified Buyer

ReviewingDaily Growing Up® Prebiotics
Family Size / Unflavored

I recommend this product

Jun 2, 2026

Poops A Lot

We’ve literally started calling 2 of our 3 girls Queen Poops A Lot and I’m not even joking!! There was a time I never thought we would get off Miralax and we were even beginning to have trouble with that. Surely you don’t just keep increasing the dose until “the overdose is just diarrhea.” That’s not the kind of world I want my child to live in and it’s certainly not the one I want to send them to school in!!!!! Imagine “diarrhea girl” being the label she gets in elementary school and it sticks with her forever! Just no. A friend whipped in with this recommendation and I was at a point of pure desperation for my children to take normal poops and quit the “my belly hurts” statements so I caved with the thought that “it would just be another fad we try and it fail too.” WRONG. It worked. A year in and I’ll ascend down a mountaintop in a blazing hot desert snow storm to purchase this stuff every month - I’m for real. It doesn’t matter the conditions that are forecast, we will NOT go without!

A hand holding a container of Begin Health growing up prebiotics supplement for toddlers and kids, showing the blue and white labeled product with nutritional information

Angela K.Verified Buyer

ReviewingDaily Growing Up® Prebiotics
Whole Family / Unflavored

I recommend this product

Mar 14, 2026

Flavorless and regular

My son is autistic and refuses to eat 99% of food he has to offer. I mix this into his morning chocolate milk and he can't taste it and mixes right in he has no idea it's there and it works we also have a problem with constipation and with him holding and this keeps everything flowing nicely we just love the product and thank you so much for being here for us.

Open white cabinet shelves containing health supplement containers, water bottles, and storage items organized on multiple levels

Yanina Q.Verified Buyer

ReviewingDaily Growing Up® Prebiotics
28-Pack / Unflavored

I recommend this product

May 5, 2026

Magic powder!!!

We’re currently on our 3rd order 🙌🏼 my son was going once a week before taking growing probiotics. His poops were hard and huge! Sometimes we would only get little pebbles like. The struggle was real! But since we gave growing probiotics a try it has been a game changer!!!! He goes every day! His poops are soft and there’s no crying or yelling anymore! I can’t recommend this product enough!!!! Wish we had known about it sooner!

Four purple packets of Begin Health growing up prebiotics daily supplement arranged on a marble surface

Denaya M.Verified Buyer

ReviewingDaily Growing Up® Prebiotics
Family Size / Unflavored

I recommend this product

Oct 14, 2026

Really works!

My 10 year old has struggled with severe constipation since he was 9 months old. We have tried MANY medications and so much MiraLAX, suppositories, and diet changes. He recently this year struggled with pancreatitis and a friend asked if I had ever tried fiber (which we had) and if id ever heard about this brand. I thought to myself it probably wouldn’t work but if there’s any chance at all it COULD I would love to try it! My son still has to take his meds BUT this has helped tremendously!! He hasn’t had any extra complications and when taking it daily hasn’t had any problems in the bathroom, so I highly recommend!! We just add it to juice, applesauce, or whatever he is eating that’s soft/drinking!

A young child wearing glasses and a cream-colored hoodie stands smiling on a driveway in a residential neighborhood during golden hour, with a lawn and houses visible in the background.

Questions parents ask

Still wondering? We’ve got you.

Start today + FREE kit
How is this different from laxatives?
Laxatives force a bowel movement by pulling water into the gut fast, but temporary. Our prebiotics feed the good bacteria already in your kiddo’s gut, helping it rebalance naturally, with no dependency risk.
How long until we see results?
Some parents see changes within days, but our science supports at least 45 days of daily use for best results. That is why a fresh tub arrives every 4 weeks, so the routine never runs out.
Will my picky eater actually take it?
Yes, our tasteless, textureless powder disappears into water, milk, or their favorite soft foods. Trouble mixing? Dissolve it in a little warm water first, then add the rest.
What’s in the Gut Squad Starter Kit, and do I get it every time?
A DIY Sticker Pack and 7 travel stickpacks, which ship in your first subscription order, plus our Constipation Guide, emailed to you as a PDF: a $30.00 value, FREE, once. Every delivery is 15% off, the first one and every one after it. One-time orders do not include the kit.
How much is each delivery, and can I skip or cancel?
A Family Size tub arrives every 4 weeks for $59.50 instead of $70.00, 15% off every time. Skip a delivery or cancel anytime in your Begin Health account.
How much should my kid take?
Ages 1 to 3: one serving a day. Ages 4 and up: up to two servings a day, given separately. Some kids have a little gas or bloating at first, so start with half a serving and build up over a few days.
Is it safe for daily, long-term use?
Yes. Made from just two gentle ingredients and pediatrician-recommended for daily use, for ages 1+. Check with your pediatrician first if your kiddo is on medication or has a medical condition.
Are the HMOs made from breast milk?
No, we do not use actual human milk to create HMOs. Our 2’-FL HMO is fermentation-derived, but structurally identical to the HMO found in breast milk, so it feeds good gut bacteria the same way.
What if it doesn’t work for us?
Every gut is different. If after 6 weeks you’re not seeing results, our care team at care@beginhealth.com will help you troubleshoot or find a better fit.
A Family Size tub of Daily Growing Up Prebiotics with the FREE Gut Squad Starter Kit: a DIY Sticker Pack, 7 travel stickpacks and the Constipation Guide

Happy tummies, happy kiddos.

Gentle prebiotic fiber that helps kids’ poop slip out better, every day.

FREE Gut Squad Starter KitA $30.00 value, with your first order

$59.50$70.00/ 4 weeksSave $10.50

Start today + FREE kit

15% off every delivery · skip or cancel anytime

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