I found the Sports Research L-Theanine capsules at Costco and decided to do a little research into the benefits before trying them. I'm about halfway through the jar now and really think I'll be repurchasing. The quality seems high, and I’ve noticed a more balanced, calm energy throughout the day, especially when paired with coffee. It’s subtle but effective, and it feels like one of those small additions to my routine that’s actually making a difference.

