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Why NOT Giving Your Teen These 12 Vitamins Can make Them Tired, Unmotivated, Irritable, and Even Derail Their Future.

(You'll be shocked with what experts say about #7 if you have a grumpy teen!)

Teens everywhere are showing signs of nutrient deficiency – and no one’s talking about it.


Behavioral issues are on the rise…. teens can’t stay awake in class... attention and focus are shorter than ever


And the real root cause? Modern teen diets are critically short on 12 essential vitamins and minerals they need to thrive (especially #7)


Every skipped nutrient is like pulling the plug on their focus, energy, and future! And it’s only getting worse

Why NOT Giving Your Teen These 12 Vitamins Can make Them Tired, Unmotivated, Irritable, & Even Derail Their Future.

(You'll be shocked with what experts say about #7 if you have a grumpy teen!)

Teens everywhere are showing signs of nutrient deficiency – and no one’s talking about it.


Behavioral issues are on the rise…. teens can’t stay awake in class... attention and focus are shorter than ever


And the real root cause? Modern teen diets are critically short on 12 essential vitamins and minerals they need to thrive (especially #7)


Every skipped nutrient is like pulling the plug on their focus, energy, and future! And it’s only getting worse.

That’s Why Your Teen Needs To Get These 12 Nutrients On A Daily Basis:

Tap each ingredient to see how it supports your teen’s health.*

Meet the Science-Backed Multivitamin Filling the 12 Critical Gaps in Your Teen’s Nutrition

The "No Junk"™ Teens' Multi

5,000+ Reviews

Give your teens the nutrition they need to fight the effects of Hidden Hunger - with just 2 delicious gummies a day!


30-day supply of strawberry & orange flavor gummies for ages 13-17.

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

83% of customers say First Day vitamins are supporting their child's overall behavior.

82% said these vitamins are improving their child's overall moodiness, irritability and sleep.

97% agree that First Day is better than other vitamin brands they have tried.

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2. Select Quantity 30 servings per bottle

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Teens' Pre+ Post+ Probiotic

Five gold stars 543 reviews
Teen’s tribiotic gummy designed with clinically studied pre+ post+ and probiotics for digestive, immune, and skin health.
$49 $24.50

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45 Day Money-Back Guarantee¹

Why 87% of Parents say First Day is Better than any other Vitamin

Doctor-Approved

Formulated with pediatric experts using the latest clinical nutrition research.

Loved by Teens

You won’t need to nag or argue, they’ll actually ask for it. That’s the First Day flavor difference.

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Real Results - Fast

Numbers don't lie – parents and teens are seeing incredible results


98%

of teens reported better overall health¹

83%

experienced less moodiness and fewer outbursts¹

81%

showed improved behavior¹

Give Them the Nutrients They’ve Been Missing — In a Gummy They’ll Love

Over Half a Million Families Trust the 200+ Contaminant-Tested Vitamin Over Toxic Brands – Here’s Why

You’ve probably read the labels. Maybe even trusted the brands.

But here’s what they won’t tell you:


Most vitamins made for teens aren’t tested for heavy metals, toxins, or hidden contaminants.


They’re filled with artificial dyes, fake flavors, and chemical sweeteners that can:


Rewire your teen's taste buds

Disrupt their gut

Make sugar cravings hard to break


Some even use gelatin made from slaughterhouse scraps – crushed animal bones and connective tissue – and call it “healthy.”


And the worst part?

They’re counting on you to never ask.


At First Day, we believe that’s not good enough.


Our vitamins were tested for over 200+ contaminants – including heavy metals and pesticides – and earned the Clean Label Project Purity Award to prove it.


You’ll never find artificial sweeteners, preservatives, dyes, or hidden junk in our gummies.


Just real ingredients, fruit- and veggie-based colors, and a clean formula you don’t have to second-guess.


Because you’re not just buying vitamins.

You’re protecting your teen’s energy, sleep, mood, skin, health, and future – one clean decision at a time.

The "No Junk"™ Teens’ Multi

Real Sugar. No Cravings - Just 2 grams – like eating a few grapes!


Natural colors from fruits, veggies, and roots - No red dye 40, yellow 5, or other fake dyes

100% Vegan – No Bones, No BS - We use plant-based pectin instead of slaughterhouse leftovers

No Added Preservatives. Only Clean Ingredients. - You won’t find any dangerous preservatives or sodium benzoate here!

Clinically absorbable ingredients - High-quality nutrients that actually work

Other Leading Multivitamins

White pill bottle with four tablets beside it.

Fake Sugar that can Increase Sugar Cravings - linked to bloating and other stomach issues

Artificial Dyes that are banned in other countries - can cause hyperactivity and behavioral problems in your teen

Gelatin from Slaughterhouse Leftovers - This cheap thickener is from animal scraps, bones, tendons, and skin.

Cancer-linked Preservatives - Sodium benzoate reacts with vitamin C to form benzene – a known carcinogen

Cheap ingredients with low bioavailability - Essentially, sugar pills that end up as expensive pee

Parents Are Seeing It. Feeling It. And Saying This:

✨ “My teen’s moods have stabilized.”

✨ “So much improvement in sleep and focus”

✨ “I’ve stopped guessing if their diet is enough. I know it is.”

✨ “She’s creating healthy habits she won’t drop.”

50 million gummies sold.

Over 800,000 families supported.

6 sell-outs and counting.


This isn’t a trend.

It’s a movement – to get real nutrients into real teens’ bodies. Before it's too late.

Expert-Designed. Parent-Driven. Built for Today’s Teens.

We built First Day with the help of leading pediatric scientists – and more importantly, with real parents who were fed up with fake sugar, bad ingredients, and hollow promises.

A person wearing glasses and a plaid shirt, in a circular frame.

Dr. Ed Giovannucci, MD, MPH, ScD

Harvard School of Medicine — Professor of Nutrition and Epidemiology


A person wearing glasses and a tie, smiling with a teal circular frame.

Dr. Lei Chen, MD, MHS

Yale School of Medicine — Pediatrician, Yale–New Haven Children’s Hospital


Don’t Wait – We’ve Sold Out 6x Before!

You’re here because you care. And that already puts you ahead of the game.


But don’t miss your window.


Because we won’t compromise. When our high-quality ingredients run low, we stop production. Full stop.


That’s how we’ve sold out 6 times — and it could happen again soon.

✅ Secure your bottle now

✅ Reserve your teen’s supply

✅ Start seeing the difference


Don't Postpone Their Health.

**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.