The First Day Impact
See what First Day customers like you have experienced:
"Completely Amazing" 6,231 Reviews
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With Today's Special Offer
- 1 bottle refill ships every 30 days at $33.15/ea
- Pause, adjust or cancel anytime
- Free US shipping, gifts & savings on your first shipment
- 45 day money-back guarantee
Learn About the Hidden Hunger Crisis
and Vanishing Nutrients
Hidden Hunger: the health crisis affecting MILLIONS of kids, even in the US...
This hidden problem is tied to (not so hidden) symptoms. Deficiencies are often linked to challenges around behavior, immunity, mental health, and sleep.
Our solution makes it easy—no more mealtime battles or endless coaxing to eat vegetables. Just two delicious daily gummies, jam packed with essential nutrients, help address common symptoms of nutrient gaps that can impact your child's well-being.
Vanishing Nutrients: the reason why even kids with balanced diets might not get the nutrients they need...
Studies are revealing shocking declines in nutrient levels across crops. Scientists are calling this worldwide crisis Vanishing Nutrients.
From soil depletion to global warming, our food is losing its nutritional punch. In fact, a recent study from Scientific American revealed that one would need to eat EIGHT oranges today to get the same amount of nutrition that our grandparents would have gotten from ONE.
To make up for nutrient gaps, we need to consider more than just "good food". We need to feel confident our kids are always getting a consistent support of good health.
Raising the Bar on Kids' Nutrition


Made to Fight Hidden Hunger
Hidden hunger is a common issue among kids today. Our gummies are packed with the nutrients many kids lack, helping to fill gaps in their diet and support growth, mood, and behavior.*
Developed Alongside Harvard & Yale Scientists
Our product was crafted with input from leading scientists at Harvard and Yale, combining the latest research with high-quality ingredients to deliver a multivitamin parents can trust.
Backed By Modern Science
Our multivitamin isn’t just a blend of ingredients—it’s a formula built on cutting-edge science. From the latest studies to carefully measured doses, each gummy reflects the best of modern nutritional science.
Pediatrician-Approved
Recommended by pediatricians, our multivitamin is designed to meet the unique needs of growing children, ensuring they get the support they need from a trusted source.
Clean Label Project Certified
Our products have been independently tested by the Clean Label Project for harmful chemicals like heavy metals, pesticides, and plasticizers, and meets their standards for purity and exceeding typical industry practices.
Ingredients Sourcing and Dosage
We source each ingredient with care, choosing only the highest quality vitamins and minerals. Our dosage is tailored for kids, providing safe and effective support without risking overuse or unwanted additives.
45 Day Money-Back Guarantee**
Approved by Pediatricians,
Backed by Science.
We’ve created a formula that has been genuinely shown to make a difference when it comes to improving mood, sleep, digestion, and overall behavior.¹
Parents and doctors agree—our vitamins make a real difference in kids' health.

"When I choose vitamins, I consider their quality and safety records, ingredients, dosage, and testing protocol. First Day has created an excellent supplement for children."
- Leann Poston M.D, M.Ed, MBA, Pediatrician and Medical Educator
82%
of customers saw an improvement in their child's overall moodiness, irritability & sleep.¹
97%
of customers Prefer First Day over other vitamin brands.¹
88%
of customers saw improved digestion from their child taking the Kids' Multivitamin and Probiotic together¹
82%
of customers saw an improvement in their child's overall behavior.¹
Over 800,000 Parents Are Helping Their Kids Reach Their Full Potential
Scientifically designed to fight nutrient deficiencies that can lead to behavioral problems and picky eating.*
Formulated with Purpose


















Experts Love Us!
Our scientific mentors are leading doctors, scientists, and most importantly parents. They help guide First Day's mission to build a better future for families everywhere.

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

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.
See the difference essential nutrients can make for your child’s health and wellness.

"I truly believe in our mission of bringing better health to families."
"After learning about the massive amounts of sugar that were in typical kids multivitamins, I built a list of 198 Harvard and Yale nutritionists, pediatricians, and professors. From there, two of the top researchers at Harvard and Yale agreed to help! I explained my story to them, how I wanted to help parents, and what I found about the vitamin industry. And they were a huge help in creating this breakthrough in kids nutrition.
That's why we’re so confident First Day will help you get the results you want. If within the first 45 days you find yourself not completely satisfied, we’ll give you your money back - no questions asked.**"
**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!
1. Based on a survey of First Day customers
*These statements have not been evaluated by the Food and Drug Administration.
This product is not intended to diagnose, treat, cure or prevent any disease.






