The strength to endure, the energy that lasts.

It didn't start as a brand — it started as one father's worry. My twin sons took up baseball, and every weekend I watched their games from behind the field. Kids who pitched and hit well would visibly falter once the late innings came. It wasn't a lack of skill. Their fuel simply ran out first.

From that day on, I searched for something to give my kids. But every product I found either contained caffeine, had no listed ingredient amounts, or gave no way to fully verify what was inside. My child had just entered his growth years — I couldn't hand him a product designed for adult athletes.

So I set just one standard: “What I wouldn't put in my own son's bag, I won't recommend to anyone else's child.” I repeated that question every time an ingredient was added or removed, and sports nutrition researchers and amino acid experts answered it with science.

Caffeine-free, doping-free, and full disclosure of every ingredient amount. Instead of flashy copy, we chose to prove ourselves with the numbers printed on the back. A single pack verified through a parent's eyes and designed by expert hands — that is AMINO K.

I'm also a parent — my two sons, a high school freshman and a 6th grader, both play soccer. I've fed them all kinds of amino acid and energy products, but plenty were hard to stomach because of the taste, or left me wondering “why was this even made this way” every time I checked the label.

Drawing on my long career at an amino acid company, I decided: “Let's make something I can trust enough to give my own child.”

I combined my experience in the amino acid field with sports science guidance from a professor at Konkuk University's Department of Physical Education. Together, we blended the energy and amino acids athletes need into a single formula.

And to make it easy for kids to take without any burden, we finished it as a single-pack gel. That is AMINO K Performance Gel.