Articles & Guides

Evidence-led articles on focus, nootropic ingredients, and cognitive performance. A qualified doctor reviews every article — see our medical reviewer.

• Citicoline Benefits: What the Clinical Trials Actually Show
  What citicoline actually does for memory, attention, and brain energy: doses from clinical trials, honest limits of the evidence, and safety — with sources.
• L-Theanine and Caffeine: Why the Pairing Works for Focus
  What happens when you combine L-theanine and caffeine: the studied doses and ratios, what clinical trials found, timing, and safety — with sources.

Looking for a recommendation instead? Read our guide to the best nootropic supplement.