The American Academy of Pediatrics’ position on caffeine in kids is direct. No caffeine for children under 12. For adolescents 12 to 18, American Academy of Pediatrics (AAP) recommends limiting caffeine to less than 100 mg per day, which is roughly one cup of coffee or one 8-ounce energy drink.
Most parents do not know this is the published guidance. Most kids in youth sports above age 12 consume more than that on a regular basis.
This piece is about what caffeine actually does in young athletes, the products that contain more than parents realize, and the practical guidance.
What caffeine does in a young athlete.
Increases heart rate and blood pressure.
Increases alertness and reduces perceived exertion (the “ergogenic” effect).
Reduces hand steadiness and fine-motor control at higher doses.
Increases urine output (mild dehydration risk in heat).
Disrupts sleep when consumed in the second half of the day.
In adolescents specifically, caffeine has more pronounced effects on sleep, anxiety, and cardiovascular response than in adults, because brain and cardiovascular systems are still maturing.
The dose ranges that matter.
Under 100 mg/day for adolescents per AAP: roughly one 8-ounce coffee or one 16-ounce iced tea or one 8-ounce energy drink (smaller cans, like Red Bull or Celsius).
200 mg/day: AAP labels this excessive for adolescents. Most large coffee drinks (16-ounce / “venti” coffee), a 16-ounce energy drink, or two of either combined.
400 mg/day: the FDA’s adult limit. Should never be approached by anyone under 18.
The products parents miss.
Energy drinks: 80 to 300 mg per can depending on size and brand. Bang, Reign, Monster Ultra carry the highest doses.
Pre-workout supplements: 150 to 400 mg of caffeine per scoop. Some brands stack caffeine with other stimulants (yohimbine, synephrine) that compound cardiovascular effects.
“Energy water” and shots: 100 to 200 mg per bottle.
Coffee drinks at coffee shops: a “tall” Starbucks brewed coffee is about 200 mg. A grande latte is around 150 mg.
Tea: black tea is 40 to 60 mg per 8 oz. Iced tea bottles are often 60 to 100 mg.
Caffeinated chewing gum and mints: 40 to 100 mg per piece. Often consumed in multiples.
Soda: 30 to 50 mg per 12-ounce can. Mountain Dew higher (~55 mg).
Chocolate, especially dark: 5 to 25 mg per ounce.
The kid who has a coffee in the morning, a Celsius mid-day, and a sports drink with caffeine at practice can hit 400 mg without trying.
The energy drink position.
The AAP’s stance on energy drinks is direct: not recommended for children or adolescents. The combination of caffeine, sugar, and other stimulants exceeds safe levels for young athletes routinely.
Cardiac events linked to energy drink consumption in adolescents are well-documented in the medical literature. The FDA has investigated multiple deaths linked to high-dose energy drinks. The events are rare but the risk profile is real.
For youth-sports programs, “no energy drinks before, during, or after practice” should be a written team policy. Most programs have not articulated this and rely on parents to manage.
The “pre-workout” supplement question.
Pre-workout supplements marketed to athletes typically combine caffeine (150 to 400 mg) with stimulants (beta-alanine, citrulline, sometimes yohimbine), nitric-oxide precursors, and creatine. The caffeine alone exceeds AAP recommendations for adolescents.
For youth athletes, pre-workout supplements are not appropriate. Sport-related supplement use should be coordinated with a registered dietitian (RDN) or pediatric sports-medicine physician, not based on Instagram fitness influencers.
What works for performance instead of caffeine.
For youth athletes wanting an “edge” before competition, the published evidence supports:
Adequate sleep (8 to 10 hours for adolescents). The single biggest performance variable.
Adequate carbohydrate fueling 2 to 4 hours before competition.
Hydration starting 24 hours before, not just morning-of.
A pre-game routine that includes activation work and mental preparation.
None of these involve caffeine. All produce better outcomes than a stimulant.
The conversation with the older kid.
By 14, kids are exposed to caffeine marketing aggressively. The conversation is direct: caffeine is a drug, the AAP says under 100 mg/day for teens, energy drinks routinely exceed that. You are not anti-coffee; you are pro-knowing-the-dose.
For coaches.
A written team policy on caffeine and energy drinks at practice and competition.
Education for parents at the start of the season.
A “no energy drinks at games” rule that is enforced.
The honest read. Caffeine is everywhere in youth-athlete culture and the published medical guidance is largely ignored. The kids who follow the AAP guidelines have better sleep, lower anxiety, and better long-term cardiovascular profiles than the kids who don’t. The conversation costs nothing. The products that exceed the limits are the ones that look most like adult-athlete culture, which is the marketing point and the risk.