5 Reasons Pediatricians Insist on filling these Key Nutrient Gaps. 1 in 3 Families Have A Critical Deficiency.

Most kids miss key nutrients, and it shows. See why pediatricians recommend First Day's kids' multivitamin, dosed right for your child's exact age.

Note: Read this before you struggle with your kid's mood swings and stress at school.
Kristin Arteminia

Kristin Arteminia

Sponsored
Updated 06/28/2026
REASON 1

The Nutrient Gaps Behind Weak Bones and Reduced Immunity. Filled Before They Start.

You can't see a nutrient gap the way you see a scraped knee. That's why it's worrying. By the time a shortfall shows up as a delay or bone that isn't tracking, it's been building for months. Most kids' vitamins do nothing to get ahead of it: one dose for every age, cheap forms the body can't absorb.

First Day is Bio-Matched — the right form and dose for your child's exact age, like methylfolate their body can actually use instead of folic acid that passes through. Two gummies a day fill the gaps before they become problems.

✓ Mood Support
✓ Focus & Attention Support
✓ Immune Support
✓ Sleep Support
✓ Picky Eating Support
✓ Growth & Development Support
✓ Energy Support
✓ Skin Support
✓ Behavior Support

REASON 2

93% of Kids Don't Get Enough Nutrients. It often manifests as Mood Swings & Irritability.

Parents face an uphill battle with external factors negatively impacting nutrients. A 2004 US study found important nutrients in some garden crops are up to 38% lower than they were in the middle of the 20th Century. First Day is specifically formulated to help solve this hidden health crisis. Our vitamins were designed specifically to help replenish nutrients in kids that are difficult to get even if they are eating their veggies.

REASON 3

Kid Falling Behind in School? Get Visible Results in Just a Few Weeks.

Most parents see real changes within the first month. The most common mistake is inconsistency. Skipping days resets the progress. First Day is the vitamin kids ask for. No fighting, no spitting it out, no "do I have to." Just two precisely formulated gummies, every day, doing their job.

Day 7 — First Signs

Methylfolate and B6 begin supporting the neurotransmitters behind mood and motivation.

83% of parents report seeing a shift in their kid's mood within the first two weeks.*

Day 30 — Visible Changes

Methylfolate has fully replaced the folic acid most kids' bodies were struggling to convert. The 21 superfoods are filling in what their diet's been missing.

98% of parents say First Day supports their kid's overall health and nutrition.*

Day 90 — Full Impact

All 10 critical nutrients and the superfood blend are working together at the doses matched to your child's age.

75% of parents report visible improvement in skin health.*

*Based on a survey of First Day customers.

REASON 4

Nutrient Gaps Grow When Kids Don't Eat Their Vitamins & Veggies. Fix with 2 Gummies. No Icky Powders or Pill Capsules

Frustrated you are wasting hundreds of dollars when your kid won't take their multivitamin. Appetite suppression is a challenge many parents feel helpless trying to tackle. Your kid's body needs critical nutrients, but they also need to actually take the multivitamin in order for them to get those nutrients.

First Day's Kids' Multivitamin fills that gap with 21 organic superfoods. Not synthetic isolates. One packet. No negotiation. Kids ask for it every morning.

Why it works: Real food sources mean their body actually recognizes and uses what you're giving them. No artificial colors, no fillers, no melatonin trap (unlike most kids' brands).

The outcome: immune cells that respond to everyday germs. Vision that develops normally. Growth that doesn't stall while you wait for them to eat broccoli.

REASON 5

Most multivitamin brands dangerously dose your 4-year-old like a 17-year-old. First Day formulates specifically for kids.

Dosing a 4-year-old like a 17-year-old isn't lazy, it's dangerous. The FDA does NOT distinguish between a kid that's 4 years old and a 45-year-old man when establishing daily value percentages. We work hard to ensure we are at the right dosage level so that an excess of B6 doesn't create dangerous neuropathy in your child (safety alert). Wrong doses, wrong forms, deficiencies left unaddressed during the years that matter most. First Day invented Bio-Matched because the vitamin industry refused to: formulas built for your child's exact stage, and the problems you're actually seeing.

The "No Junk"™ Kids’ Multi Daily Gummies For Improved Mood & Behavior

Deliciously nutritious daily multivitamin gummies packed with 21 organic superfoods and 9 essential vitamins.

Flavor: 🍓 Strawberry & 🍊 Orange

 Enhanced Nutrition & Immunity Enhanced Nutrition & Immunity
95%

of parents say First Day vitamins support their child's overall health & immunity.†

 Improved Behavior Improved Behavior
83%

of customers say First Day vitamins support their child's overall mood & behavior.†

 Better Sleep Routines Better Sleep Routines
82%

said these vitamins are improving their child's overall bedtime routines & sleep quality.†

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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.

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