Two Ingredients. 18 Years of Research.
For nearly 20 years, researchers have studied these two together — and this combo has a name: the focus stack. They figured out that when you pair them at the right ratio, something happens that neither ingredient does alone: Focus sharpens, but the nerves settle. Calm shows up, but you stay sharp.
Across the studies that tested it, one ratio kept showing up: two parts L-theanine to one part caffeine. birdiegum is dosed to match — 40 mg caffeine, 80 mg L-theanine. The same 1:2 ratio that's been validated for nearly two decades.
We took that ratio. We put it in a piece of gum. We made it for golfers.
birdiegum is built on the focus stack — the caffeine + L-theanine combination cognitive researchers have validated for nearly two decades.