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Giving Your Kids Body The Proper Nutrients Will Help To*:
Boost
Mood
Improve
Eating Habits
Enhance
Behavior
Promote
Restful Sleep
Improve
Immunity
Support
Development
Boost
Mood
Improve
Eating Habits
Enhance
Behavior
Promote
Restful Sleep
Improve
Immunity
Support
Development
Preferred by 1,000,000+ Families
The Science-Backed Vitamin for Picky, Restless, or Distracted Kids
Thoughtfully designed with 21 superfoods and 9 essential vitamins kids' often lack to support balanced behavior, stable moods, healthy sleep and optimal development.*
45 Day Money-Back Guarantee**
“My son was a picky eater and finding a way to get his nutrients was a struggle. Now, not only has his attitude changed, but he is also eating better!” - Mary F.
Real Customer Results
See what First Day customers like you have experienced:
Real Customer Results
Other customers like you have experienced:
The Science Behind Our Kid's Multivitamin
When kids melt down, snap, or can't hold it together it's easy to blame the phase. But the brain needs specific nutrients to regulate emotions. When those run low, kids literally can't manage their reactions.
How This Helps*
🧠
Methylfolate (not folic acid) — the bioavailable form that supports neurotransmitter production regardless of genetic variation
⚡
Vitamin B6 — plays a direct role in how the brain produces serotonin and dopamine
🫐
21 organic superfoods — delivers whole-food nutrients that support healthy brain development
Target 6 Symptoms of Nutrient Deficiencies
with Just 2 Daily Gummies
Target 6 Symptoms of Nutrient Deficiencies with Just 2 Daily Gummies
Unstable Moods
Vitamin B6 and Vitamin B1 play a key role in brain health and emotional balance, helping to stabilize moods and reduce irritability in kids.*
Difficulty Concentrating
With Vitamin B2 for focus support and Vitamin B1 for brain health, these gummies help kids stay focused and attentive, supporting cognitive function and clarity.*
Sugar Cravings
Vitamin C and Vitamin B6 contribute to balanced energy levels, which can help reduce the body’s cravings for quick energy sources like sugar.*
Weakened Immune System
Vitamin C and Vitamin D3 are essential for a strong immune system, providing the nutrients kids need to defend against common colds and other illnesses.*
Poor Sleep Habits
Vitamin B6 supports natural energy regulation, promoting healthier sleep patterns and making it easier for kids to get restful sleep.*
Picky Eating
Vitamin A and Vitamin B9 support cell growth and development, helping to fill in nutritional gaps that picky eaters may have and ensuring they get the nutrients they need.*
45 Day Money-Back Guarantee**
Kids' "No Junk"™ Multi
Give your kids the nutrition they need to fight the effects of Hidden Hunger - with just 2 delicious gummies a day!*
Step 1: Delivery Options
Step 2: Quantity 30 Servings Per Bottle
Kids' Nighttime Reset Magnesium
Melatonin-free support for relaxation & stress levels.
Kids' Brain Focus Support
Support for focus, learning, and memory recall.
Kids' Pre+ Post+ Probiotics
To support immunity, digestion, and skin health.
45 Day Money-Back Guarantee¹
This Product is For Kids Ages 4 - 12
Benefits You Don't Want To Miss Out On
We've crafted a formula specifically for kids ages 4–12, using carefully selected vitamin forms their bodies can actually absorb. No artificial sweeteners, no megadosing, no shortcuts.
Our ingredients are chosen to close the nutrient gaps that show up in real kids with real diets, the picky eaters, the chicken nuggets every meal, the kids who won't touch a vegetable.
Parents and pediatricians agree: the form of the vitamin matters as much as the vitamin itself.
"When I choose vitamins, I consider their quality and safety records, ingredients, dosage, and testing protocol. First Day has created an excellent supplement for kids."
- Leann Poston M.D, M.Ed, MBA, Pediatrician and Medical Educator
Behavior
Methylfolate and Vitamin B6 support the neurotransmitter production that helps kids regulate emotions and reactions.*
Focus & Attention
Vitamins B1, B2, and B6 support brain signaling, nerve function, and the cognitive pathways kids need to stay on task.*
MTHFR & Folate Support:
First Day uses methylfolate, not folic acid — the bioavailable form that works for all kids, including the 40% whose bodies can't convert folic acid.*
Learn About the Hidden Hunger Crisis and Vanishing Nutrients
Hidden Hunger: the health crisis affecting MILLIONS of kids, even in the US...
Many people are suffering from something completely invisible from the human eye. UNICEF (The United Nations Children's Fund) has called this discovery "Hidden Hunger" – used to describe nutrient deficiencies.
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 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 improvement in overall moodiness, irritability & sleep.¹
97%
of customers Prefer First Day over other vitamin brands.¹
88%
of customers saw improved digestion from taking the Multivitamin and Probiotic together¹
82%
of customers saw an improvement in their child's overall behavior.¹
Over 1,000,000 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.
Dr. Lei Chen, MD, MHS
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.
