Prime Journal
The Ingredient That Makes R5 Feel Different
L-Theanine is the amino acid behind R5's smooth, sustained focus. Here's how it works, why it matters for active adults over 40, and why R5 is caffeine-free.
The Ingredient That Makes R5 Feel Different
L-Theanine is the amino acid behind R5's smooth, sustained focus. Here's how it works, why it matters for active adults over 40, and why R5 is caffeine-free.