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Preferred by 800,000+ Families Worldwide
The Science–Driven Supplements Redefining Kids' Nutrition
Kids need more than just the basics. While our daily multivitamin fills key nutrient gaps, some families choose to add extra support.
That’s where magnesium and our tribiotic come in — helping promote calm, better sleep, healthy digestion, and a stronger immune system.*
Together, they support how kids feel, focus, and grow every day.
“My son was a picky eater and would act out. Now, not only has his attitude changed, but he is also eating better!”
Target 5 Symptoms of Nutrient Deficiencies with Just 2 Daily Gummies
Unbalanced Mood & Behavior
May be missing essential B vitamins, which help support emotional regulation and neurotransmitter function.
When these nutrients are lacking, kids may experience increased irritability, mood swings, or difficulty managing emotions.
Poor Sleep Habits
May be missing Vitamin B6 & D3, which play key roles in supporting restful sleep.
These nutrients help regulate melatonin production and promote relaxation, making it easier for kids to wind down and stay asleep through the night.
Difficulty Concentrating
May be missing critical B vitamins, which support brain function and cognitive clarity. These nutrients help convert food into energy, keeping kids alert, focused, and ready to learn.
Our formula is designed with precision, ensuring kids get exactly what they need, in forms their bodies can actually use—without unnecessary megadoses or poor ingredient pairings.
Picky Eating Habits
May be missing Vitamin B12 & B6, which are essential for appetite regulation and nutrient absorption.
When these vitamins are low, kids may develop stronger food aversions and struggle to get the variety of nutrients they need from their diet.
Weakened Immunity & Frequent Colds
May be missing Vitamin C & D3, which are crucial for maintaining a strong immune system.
These nutrients help the body fight off common colds, support overall resilience, and promote a faster recovery when illness strikes.
Target 5 Symptoms of Nutrient Deficiencies With Just 2 Gummies
Unbalanced Mood & Behavior
May be missing essential B vitamins, which help support emotional regulation and neurotransmitter function.
When these nutrients are lacking, kids may experience increased irritability, mood swings, or difficulty managing emotions.
That's why we created our "No Junk"™ Multi to help fill these nutrient gaps.
Poor Sleep Habits
May be missing magnesium, which plays a key role in supporting restful sleep.
This essential mineral helps regulate melatonin production and promotes relaxation, making it easier for kids to wind down and stay asleep through the night.
Our Nighttime Reset Calming Magnesium is a no-melatonin aid in supporting your child's sleep!
Difficulty Concentrating
May be missing critical B vitamins, which support brain function and cognitive clarity. These nutrients help convert food into energy, keeping kids alert, focused, and ready to learn.
Our "No Junk"™ Multi formula is designed with precision, ensuring kids get exactly what they need, in forms their bodies can actually use—without unnecessary megadoses or poor ingredient pairings.
Picky Eating Habits
May be missing beneficial gut bacteria, which support healthy digestion and appetite regulation.
When the gut is out of balance, kids may struggle to absorb nutrients properly and develop stronger food aversions — making it harder to get the variety they need from their diet.
Our Belly-Biotic not only supports the gut microbiome, but also helps the body absorb nutrients from vitamins and food!
Weakened Immunity & Frequent Colds
May be missing supportive probiotics and prebiotics, which are crucial for maintaining a strong immune system.
A healthy gut supports overall resilience and helps the body fight off common colds, with faster recovery when illness strikes.
Our Belly-Biotic includes prebiotics, probiotics, and postbiotics to help the gut microbiome stay in balance!
The First Day Impact
The First Day Impact
Kids' Daily Supplements
Science-backed supplements for daily nutrition, easier mornings, and healthy school days. Made with no junk, and a blend of organic ingredients.
30 day supplies of delicious fruit-flavored gummies!
45 Day Money-Back Guarantee¹
Pause Or Cancel Subscriptions Anytime
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Meet Your Kids' New Best Friends!
The "No Junk"™ Kids' Multivitamin
Packed with 9 essential organic vitamins to help fill nutrient gaps that support things like behavior, immunity, eating habits, and energy.*
Ingredients
We are thoughtful about the ingredients we select, use REAL organic fruits & vegetables, and keep out long lists of ingredients that can't even be pronounced.
Organic Fruit and Veggie Blend: Apple, Kale, Broccoli, Spinach, Carrot, Parsley, Beet, Green Cabbage, Blueberry, Raspberry, Strawberry, Tomato.
Other Ingredients: Organic Tapioca Syrup, Organic Cane Sugar, Water, Pectin, Citric Acid, Natural Colors, Natural Flavors, Organic Fruit and Vegetable Blend, Organic Sunflower Oil, Organic Carnauba Wax.
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.
Belly-Biotic
A unique 3-in-1 pre, post, and probiotic designed to promote gut health, support oral health, fortify immunity and improve overall wellness.
Ingredients
Livaux® (Prebiotic): Made from whole fruit golden kiwi powder, Livaux helps increase the probiotics in your microbiome. It also helps improve gut transit, fecal bulking and mucus production.
Bacillus coagulans SNZ 1969® (Probiotics): Designed to survive the trip through the stomach and all the way to your intestines, where it can germinate and flourish. These probiotics help aid in overall immune health and can even help reduce plaque and cavity-causing bacteria.
Heat-treated Lactobacillus paracasei MCC1849 (Postbiotics): Helps maintain a healthy immune response via stimulating health markers.
Other Ingredients: Organic Tapioca Syrup, Organic Cane Sugar, Water, Pectin, Natural Flavors, Citric Acid, Natural Colors, Organic Carnuba Wax
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.
Nighttime Reset
Meet the magnesium gummy that’s giving kids restful sleep, calmer moods, and mind and body relaxation. Made with calming ingredients and NO melatonin hormones in a delicious strawberry flavor.*
Ingredients
Magnesium Citrate: An essential mineral that supports mind and body relaxation, balances mood, and supports nighttime relaxation. We use a 100% chelated format that is more bioavailable, for maximum absorption.*
Suntheanine® L-Theanine: Clinically studied ingredient shown to promote relaxation, improves sleep quality, and decreases stress and anxiousness for kids, specifically.
Other Ingredients: Organic Cane Sugar, Organic Tapioca Syrup, Water, Pectin, Citric Acid, Natural Flavors, Natural Colors, Organic Carnauba Wax.
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.
Better Together: Why Pairing Works Best
Some nutrients work better as a team. That’s why thousands of parents bundle our most-loved supplements for even bigger results.
Kids' Daily Enrichment Multi
Packed with 9 essential organic vitamins to help fill nutrient gaps that support things like behavior, immunity, sleep, and energy.*
97% Of Families Prefer First Day
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.*
A Blend of Organic Ingredients Designed to Support:*
Brain Health
With Vitamin B1 for brain health and Vitamin B2 for focus support, these gummies help kids stay focused and attentive, supporting cognitive function and clarity.
Balanced 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.*
Better Sleep Habits
Vitamin B6 supports natural energy regulation, promoting healthier sleep patterns and making it easier for kids to get restful sleep.*
Boosted Immunity
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.*
Healthy Habits Made Easy
A daily ritual kids look forward to, with the nutrients they need and the simplicity parents love.
Simple 7-second routine each day
Subscribe & save for convenient deliveries
No prep - fits seamlessly into busy mornings.
"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.