3 Red Flags of Vitamin Deficiency in Kids

Over 1 million parents trust first day with their kid's nutritional needs. It's because we formulated our multivitamins in tandem with Harvard and Yale researchers specifically for kids. A blend of 21 superfoods and 9 essential vitamins helps take care of their holistic nutritional needs.

Kristin Carawine
By

Kristin Carawine

Updated 3/30/2026
Sponsored
Red Flag #1

Moodiness, Outbursts, and Rude Behavior

If you find yourself dealing with freqent mood imbalances and irritability, it may be linked to deficiencies in vitamins like B9 and B6. These help regulate mood and energy levels. Without enough of them, your child’s body can struggle with managing stress or stabilizing emotions.*

✅ Supplementing with the right blend can help replenish those gaps, making calm moments last longer—and tantrums less frequent.*

Red Flag #2

Picky Eating

Mealtime battles aren't always just a phase—they can be a sign of nutrient deficiencies. For example, Vitamin B deficiencies can dull taste buds, and low vitamin D levels can impact appetite regulation.

✅ A well‒rounded supplement can help restore balance, making healthier foods more enticing and breaking the picky eating cycle.

First Day of Summer product with fruit on a table by a poolside
Red Flag #3

Bedtime Battles

Poor sleep could be more connected to nutrition than most people realize. Vitamins like B6, B12, and D3 play a crucial role in regulating your child’s sleep‒wake cycle. For example, Vitamin B6 supports melatonin production, which is the hormone that signals it’s time to sleep.

✅ A daily multivitamin that includes these nutrients can help promote relaxation, making bedtime smoother and nights more restful.

The "No Junk"™ Kids’ Multi

Give your kids the nutrition they need to fight the effects of Hidden Hunger - with 21 organic superfoods & just 2 delicious gummies a day!

Contains no fake sugars, no artificial colors, and no fillers. That’s why we call it the “No Junk”™ Multi!

Get Up To 52% OFF
SUMMERSALE
Hurry! This offer ends soon 00:00
Code Successfully Copied!

Delivery Frequency

Original price $39, strikethrough
Sale price $23.21
with code

$25.00 Gift for orders +$60 (FREE)

$5.00 Shipping (FREE)

Cancel anytime, no questions asked

Save up to 52% NOW with code

Original price $39, strikethrough Sale price $27.30
with code
Price $39

You're missing out on free shipping!

You're 87% less likely to build a healthy habit without subscribing. You can cancel anytime!

Higher Cost

Quantity

30 Servings Per Bottle

Enjoy free shipping on your first subscription month.

Unlock Your Free Gift

12 Servings of Electrolyte Drink Mix For The Whole Family.

Rapid Hydration Electrolyte Support - Gift
Original price $25.00, strikethrough Sale price FREE

You are $75 away, keep going!

Dietary supplement container for kids daily focus brain support with a gummy bear on a white background

Kids' Daily Focus Brain Support

Support for focus, learning, and behavior.

Original price $49.00, strikethrough Sale price $29.16
0
Colorful cylindrical container of 'first day' kids dietary supplement gummies on a white background

Kids' 3-in-1 Pre+ Post+ Probiotic

To support immunity, digestion, and oral health.

Original price $49.00, strikethrough Sale price $29.16
0
A container of First Day Life Inc. Kids’ Nighttime Reset Magnesium Add-On, labeled “No Junk,” is shown with two red gummies. The packaging is blue and purple and reads no melatonin hormones.

Kids’ Nighttime Reset Magnesium

Melatonin-free support for relaxation & sleep.

Original price $39.00, strikethrough Sale price $23.21
0
Subtotal
Original price $78, strikethrough Sale price $49.92

You are saving a total of $48.08!

The "No Junk"™ Kids’ Multi (2x)
Original price $78, strikethrough Sale price $49.92
Shipping
Original shipping price $5.00, strikethrough Free shipping
45 day money-back guarantee¹.
Over 100 million gummies sold.
Join over 1 million parents who switched to First Day!
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 Superfoods Blend: Apple, Kale, Broccoli, Spinach, Carrot, Parsley, Beet, Green Cabbage, Raspberry, Blueberry, Strawberry, Tomato, Aronia Berry, Chlorella, Maca, Moringa, Reishi Mushroom, Cordyceps Mushroom, Lion's Mane Mushroom, Turmeric, Ginger.


Other Ingredients: Tapioca Syrup‡, Cane Sugar‡, Water, Pectin, Citric Acid, Natural Flavors, Superfood Powdered Blend‡ (Apple‡, Kale‡, Broccoli‡, Spinach‡, Carrot‡, Parsley‡, Beet‡, Green Cabbage‡, Raspberry‡, Blueberry‡, Strawberry‡, Tomato‡, Aronia Berry‡, Chlorella‡, Maca‡, Moringa‡, Reishi Mushroom‡, Cordyceps Mushroom‡, Lion's Mane Mushroom‡, Turmeric‡, Ginger‡), Carrot and Blackcurrant and Red Bell Pepper Juice for Color.
‡Organic

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
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:

  • Savings every single month.
  • Free shipping on your first order.
  • Easy management - skip or pause whenever you need.
  • VIP access to sales, gifts, early access & more.
  • Cancel anytime.
Multivitamin gummy container with &
Nutrition, made easy. Take the stress out of mealtime and fill nutrition gaps with a routine so tasty, your kids will forget it&
In just 2 yummy gummies, give your kids the essential nutrients they desparately deserve today. Vitamin C, Vitamin D3, Vitamin B2, Vitamin B6, Vitamin A, Folate, Vitamin B1, Vitamin K2, Vitamin B12.
Nutrition never tasted so good with our blend of 21 organic superfood fruits and veggies and nine critical nutrients in just two gummies. No fake sugars and developed based on 35,000 scientific studies.
First day has sold 55 million gummies in 2024 because of it&
93% of kids don&
Trusted by over 800,000 parents. 97% of customer prefer First Day over other vitamin brands they&
Better health for the whole family. Featuring 3 customer reviews about how much the kids love the taste.
New packaging to better reflect what&
Kids Multivitamin Nutrition Label and Supplement Facts.

Trusted By Experts And Families Like Yours

95%

of parents see

improved health & wellness

95%

82%

of parents notice

better mood & sleep

82%

97%

of customers prefer

First Day to other brands

97%

Blue cylindrical container with colorful design spilling orange gummy bears onto a blue surface.

Claim Your Offer Today!

We’re so confident in helping you get the results you want that we want it to be absolutely risk–free for you.

If within the first 45 days you find yourself not completely satisfied, we’ll give you your money back – no questions asked.**

Shop Now