Alpha Brain is Onnit's best-known nootropic: a daily capsule blend built around ingredients like Alpha GPC, Bacopa monnieri and L-theanine. It's one of the most-bought brain supplements on the market, and the 30-count bottle is the easy way to try it.

• 30 capsules
• Caffeine free

Take it as directed on the label. Want to know what each ingredient does? Read our ingredient research guide.

*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Talk with your doctor before starting a new supplement.