Best Probiotics For Women’s Gut Health & Digestive Balance | First Day

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First Day - Women's 3-in-1 Pre+ Post+ Probiotic

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ToddlersAges 2 – 3

\ \ Toddlers' Multivitamin\ \ Support for development when it matters most.](https://firstday.com/products/the-no-junk-toddlers-multivitamin) \ \ Toddlers' Probiotic+\ \ For softer, easier to pass stools.](https://firstday.com/products/toddlers-3-in-1-probiotic)

KidsAges 4 – 12

\ \ Kids' Multivitamin\ \ Daily nutrition to support mood & behavior.](https://firstday.com/products/kids-enrichment-vitamin) \ \ Kids' Probiotic+\ \ To help improve immunity, digestion & oral health.](https://firstday.com/products/kids-3-in-1-pre-post-probiotic-swap) \ \ Kids' Magnesium\ \ Helps kids fall asleep, and stay asleep during the night.](https://firstday.com/products/kids-calming-magnesium) \ \ Kids' Brain Support\ \ Support for learning, attention & focus.](https://firstday.com/products/kids-daily-focus)

TeensAges 13 - 17

\ \ Teens' Multivitamin\ \ Daily support for motivation & mood.](https://firstday.com/products/teens-kickstart-vitamin) \ \ Teens' Probiotic+\ \ Gut health support for immunity & skin health.](https://firstday.com/products/first-day-teens-3-in-1-pre-post-probiotic) \ \ Teens' Magnesium\ \ Helps teens wind down & sleep through the night.](https://firstday.com/products/teens-calming-magnesium) \ \ Teens' Brain Support\ \ Support for memory, focus & learning.](https://firstday.com/products/teens-daily-focus)

WomenAges 18+

\ \ Women's Multivitamin\ \ All-day support for women.](https://firstday.com/products/womens-supercharge-vitamin) \ \ Women's Probiotic+\ \ For digestion, bloating & feminine health.](https://firstday.com/products/first-day-womens-3-in-1-pre-post-probiotic) \ \ Women's Magnesium\ \ Helps calm the body after a busy day.](https://firstday.com/products/womens-calming-magnesium) \ \ Women's Brain Support\ \ Support for memory & brain fog.](https://firstday.com/products/womens-daily-focus)

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\ \ Men's Multivitamin\ \ Power-packed nutrition for men.](https://firstday.com/products/mens-provisions-vitamin) \ \ Men's Probiotic+\ \ Support for digestion and muscle recovery.](https://firstday.com/products/mens-gut-guardian) \ \ Men's Magnesium\ \ Helps battle stress at the end of the day.](https://firstday.com/products/mens-calming-magnesium) \ \ Men's Brain Support\ \ Support for memory and brain fog.](https://firstday.com/products/mens-daily-focus)

About Us Our Ingredients Our Science Heavy Metals & Pesticides 2026 Hidden Health Crisis Report Vanishing Nutrients Vitamin Overconsumption Blog Is Your Family Nutrient Deficient?

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First Day - Women's 3-in-1 Pre+ Post+ Probiotic Gummy 3-in-1 For Improved Feminine Health & Reduced Bloating

217 reviews

The World’s first 3-in-1 tribiotic designed to promote digestive, immune, and feminine health.

Flavor: Natural Golden Peach

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Ingredients

We are thoughtful about the ingredients we use and have selected scientifically studied strains that will have the most positive impact on your gut health.

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

IS-2® (B. Coagulan Probiotic): Clinically studied probiotic that helps support the relief of constipation, improve digestive health, support healthy gums and teeth, and maintain healthy vaginal flora.

OPTIBIOME® BS50™ (B. Subtilis Probiotic): Clinically studied probiotic that helps support the relief of abdominal bloating, burping, and flatulence – starts working in hours, not days.

ImmunoLP20® (Postbiotic): Clinically studied postbiotic shown to activate immune cells to support immunity and the relief of flu and common cold symptoms. It also helps support healthy teeth, gums, and the relief of dry skin.

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

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.

Supplement Facts

Subscription Details

You'll receive a stylish refillable bottle on your first order, then receive our eco-friendly refill pouches every 30 days on a physician-recommended schedule.

Plus, you'll receive these benefits:

Choose Your Impact

At no extra cost, 1% of every order will be donated to support a nonprofit you choose. Add to cart to choose. Powered by Beam.

To support local nonprofits across the country, First Day will within 90 days make a donation to PayPal Giving Fund (PPGF) an IRS-registered 501(c)(3) charity, to benefit your chosen charity, subject to PPGF’s terms. First Day will cover all applicable processing fees so that 100% of your donation reaches the chosen nonprofit as unrestricted funds. PPGF typically grants funds to recommended charities within 15-45 days. In the rare event PPGF can’t fund the chosen charity, it will reassign the funds to a similar charity. Since the donation is made by First Day, the charity will not receive your information and you will not be entitled to a tax deduction.

Livin’ The Good (Gut) Life

Do you know what happens when good bugs go bad? When healthy gut bacteria get overtaken by bad bacteria...

Bloating, constipation, sick days, and all sorts of down there issues that keep coming back. But the days of suffering in silence are over.

Say hello to the good gut life with Women’s Good Gut Tribiotic – the World’s 1st 3-in-1 Pre+ Post+ Probiotic!

Real Wholesome®

Real Wholesome®.

Real results you can feel.

No fillers, fake sugars or fad ingredients with wild claims.

Refillable packaging for a healthier planet

Research-backed & clinically proven.

Vegan. Cruelty Free. Non GMO. Free of allergens, artificial colors & flavors.

Tested & loved by picky kids (and adults)

Meticulously sourced for highest quality & safety.

Repeatedly tested for potency & purity.

Triple the Goodness with Tribiotics

Our powerful 3-in-1 combination of prebioticsprobiotics and postbiotics work together to promote a healthy gut microbiome, which is essential for maintaining good health in adult women. A healthy gut microbiome plays a key role in immunity, vaginal health, respiratory health and heart health - and can also help prevent a variety of health issues, including allergies, asthma, eczema and obesity.

Probiotics

Probiotics are a healthy type of bacteria that live in the gut. They not only aid with digestion, but also improve overall immunity and maintain healthy vaginal flora. Probiotics also aid in oral health, by helping to fight plaque, gingivitis and cavity-causing bacteria.

Prebiotics

Prebiotics are a type of "food" for probiotics, helping them flourish & recover. When probiotics are thriving, they can help regulate bowel movements, support immunity, and maintain healthy vaginal flora.

Postbiotics

Postbiotics are a natural byproduct of pre+ and probiotics. They help maintain a healthy immune response and have been shown to decrease flu and cold symptoms.

However, the chance of postbiotics arriving to the gut are limited. That’s why including postbiotics, along with pre+ and probiotics, increases the chance of delivery to the gut, benefiting overall health and immunity.

Just The Good Stuff

Packed with key active ingredients to support your health & well-being.

Livaux® (Prebiotic)

250mg

Supports gut health, regular digestion, and a healthy microbiome.

Gut

Immunity

IS-2® (Probiotic)

50mg

Supports digestive and feminine health.

Gut

OPTIBIOME® BS50™ (Probiotic)

20mg

Supports digestion and reduces bloating.

Gut

1,000,000+ happy customers

"I love how simple the ingredients are to understand. As a parent, it's a no-brainer !"

Brandi C.

Amarillo, TX

"The kids honestly ask me for their vitamins in the morning. Can you say uhhamazing!!"

Rachel Y.

Montgomery, AL

"Every ingredient in these vitamins are beneficial and the added ingredients have no toxic effect- which is something you don’t find in other brands."

Jamie C.

Ada, OK

"First Day will be part of our morning & night routine for a very long time. So happy I stumbled upon them and LOVE the auto-ship subscription option!"

Kasey L.

Rochester, NY

Formulated For A Healthy Gut Microbiome To Support:

Digestion – Feel better, lighter, and more energized with regular bowel movements and relief of bloating, constipation, and gas.

Immunity – Feel confident next flu season knowing you’re supporting immunity. . . (especially when your kids bring home that stomach bug!)

Vaginal Health – Get life-changing relief from abnormal vaginal discharge, itch, and odor by maintaining healthy vaginal flora.

Nutrient Absorption – Supercharge the power of your daily vitamin by supporting your gut's ability to absorb its nutrients.

Skin Health – Hydrate dry skin and maintain your glow.

Oral Health – Gain confidence knowing you’re supporting healthy teeth and gums.

What Sets First Day Apart

Over 1 million families have made the switch to First Day, and it is easy to see why when competitors take so many shortcuts.

Our Scientific Advisors

Dr Lei Chen, MD, MHS

Yale University

A renowned pediatrician who works at Yale University. In 1997, he graduated with his Medical Degree from New York University. He spent his time at the Yale School of Medicine, as well as the Yale-New Haven Children's Hospital. He also graduated with a Masters of Health Science from the Yale School of Medicine in 2010.

Dr. Ed Giovannucci, MD, MPH, ScD

Harvard University

A professor of Nutrition and Epidemiology at the Harvard School of Medicine. In 1984, Dr. Giovannucci graduated with his medical degree from the University of Pittsburgh. He then spent the next 8 years at Harvard, working for his Doctor of Science Degree. Since then, he has climbed to the top of his field.

45 Day Money-Back Guarantee

We're confident this is the best vitamin you'll ever try. But we understand you may be skeptical. So give it a try...worry-free! If you're still not happy, just send it back.

Women's 3-in-1 Pre, Post, Probiotics FAQs

What's are the ingredients?

We are thoughtful about the ingredients we use and have selected scientifically studied strains that will have the most positive impact on your gut health.

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

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.

Why do you have less than 100% of daily values?

Remember the old adage "more isn't always better"? Many vitamins today use cheap chemicals that our bodies can't absorb in amounts that are much higher than we actually need! In the long term, taking these sorts of vitamins can be harmful to health because our bodies have a tough time getting rid of the excess.

Take plants as an example. Overwatering your plants can damage their roots, wilt the leaves, and ruin their growth. That's why First Day focuses on being a nourishing vitamin filling in the gaps, not overloading you with nutrients.

So, we've consciously formulated our vitamin around what we most commonly lack. Then we made our gummy to fill the gaps in our everyday needs with the finest ingredients.

What else is different about First Day?

We set out by asking the unaddressed questions in the industry. What are supplements really doing for us? Why are they made the way they are?

We found the average multivitamin uses outdated science from 50 years ago.

To separate truth from fiction, our team of experts investigated thousands of clinical studies. That’s why we use the latest science and source the most absorbable ingredients from all around the world so your vitamins are actually working for you and your health.

Should I subscribe if I've never tried First Day before?

Healthy habits are hard to start let alone maintain! We wanted to make it as simple as one-click to building healthy foundations. With your subscription, you get a discount on every order for being a loyal First Day family member! Plus, cancelling a subscription is easy.

For every order, we also have a satisfaction guarantee so you can rest assured knowing we'll always have your back!

Which scientific studies does First Day look at?

Micronutrients, absorption rate, and more! We've combed through the scientific studies so that you don't have to. But if you want to peruse, check out these scientific studies for yourself:

More questions? Find answers on our FAQ page.

Ready to Start Your Health Journey?

ORDER TODAY

Customer Reviews

4.9\ \ 217 reviews\ \ Verified

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Alissa M.

Verified

06/22/2026

Easy to take

Like how easy this is to incorporate in my routine. I enjoy the flavor as well!

Review for

Women's 3-in-1 Pre+ Post+ Probiotic

Sherry M.

Verified

06/12/2026

Pre+ biotic

I believe they are doing exactly what there suppose to do. I really like them. 100%

Review for

Women's 3-in-1 Pre+ Post+ Probiotic Refill Pouches

Mary L.

Verified

06/02/2026

Pre, post and probiotic boost

I have really enjoyed taking these gummies. They taste great and I can feel a difference in how I feel. I have stopped taking other brands and choose first day!

Review for

Women's 3-in-1 Pre+ Post+ Probiotic Refill Pouches

Denise G.

Verified

05/22/2026

3 in one probiotic

Good taste and love the product

Review for

Women's 3-in-1 Pre+ Post+ Probiotic Refill Pouches

paula m.

Verified

04/20/2026

great way to start your day!

I take these gummies every morning to help keep my stomach healthy and happy. They are delicious! I definitely recommend this product!

Review for

Women's 3-in-1 Pre+ Post+ Probiotic

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

Livaux® is a registered trademark of Anagenix IP Ltd.

SNZ 1969® is a trademark of Sanzyme Biologics Private Ltd.

Suntheanine® is a registered trademark of Taiyo International, Inc.

Cognizin® is a registered trademark of Kyowa Hakko Bio Co., Ltd.

FloraSMART® is a registered trademark of Anderson Advanced Ingredients

Affron® is a registered trademark of Pharmactive Biotech Products, S.L.U.

Zembrin® is a registered trademark of HG&H Pharmaceuticals (Pty) Limited.

Unique IS2 Bacillus Coagulans® is a registered trademark of Unique Biotech Ltd.

OPTIBIOME® is a registered trademark of BIO-CAT, Inc.

OPTIBIOME BS50® is a trademark of BIO-CAT, Inc.

Immuno-LP20 is a trademark owned by HOUSE FOODS GROUP INC.

IMMUSE is a clinically researched lactic acid bacteria developed by Kirin Holdings Company, Ltd.


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