CogniZil's proprietary blend includes two natural caffeine sources that don't always get top billing in marketing for this product: Guarana and Green Tea Leaf Extract.
Guarana seeds naturally contain a higher caffeine concentration by weight than coffee beans. Green tea leaf extract contains a smaller amount of caffeine alongside its more commonly cited catechin antioxidants.
Because both sit inside a shared 15.47mg proprietary blend with 17 other ingredients, there's no way to know the total caffeine content from the label alone. That's a meaningful gap if you're tracking daily caffeine intake or sensitive to stimulants.
If you're caffeine-sensitive, pregnant, or combining CogniZil with coffee, tea, or other caffeinated supplements, factor in an unknown-but-nonzero caffeine contribution from this product.