Preferred by 600,000+ Families Worldwide
The Science–Driven Gummy Vitamin That's Redefining Kids' Nutrition
Packed with 12 superfoods and 9 essential vitamins, our kids' multi helps fill critical nutrient gaps to support balanced behavior, stable moods, healthy sleep and optimal development.*
“My son was a picky eater and finding a way to get his nutrients was a struggle. He would act out and have difficulty listening. Now, not only has his attitude changed, but he is also eating better!”
Preferred by 600,000+ Families Worldwide
The Science–Driven Gummy Vitamin That's Redefining Kids' Nutrition
Packed with 12 superfoods and 9 essential vitamins, our kids' multi helps fill critical nutrient gaps to support balanced behavior, stable moods, healthy sleep and optimal development.*
“My son was a picky eater and finding a way to get his nutrients was a struggle. He would act out and have difficulty listening. Now, not only has his attitude changed, but he is also eating better!”
The First Day Impact
See what a sample of First Day customers just like you have experienced:
† Based on a survey of First Day customers.
The First Day Impact
See what a sample of First Day customers just like you have experienced:
† Based on a survey of First Day customers.
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.*
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.*
Made to Fight Hidden Hunger
Hidden hunger is a common issue among kids today. Our gummies are packed with the nutrients many children lack, helping to fill gaps in their diet and support growth, focus, and energy—all in a way kids enjoy.
Developed Alongside Harvard and 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.
Made to Fight Hidden Hunger
Hidden hunger is a common issue among kids today. Our gummies are packed with the nutrients many children lack, helping to fill gaps in their diet and support growth, focus, and energy—all in a way kids enjoy.
Developed Alongside Harvard and 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.
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 brands1
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
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 together.¹
82%
of customers saw an improvement in their child's overall behavior.¹
Over 600,000 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
Packed with 9 Key Vitamins to Support Critical Areas for Optimal Growth and Development*
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
Dr. Chen is 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.
Alice Li, Founder
"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.