Findings by a supplement testing lab that I trust indicate that Gaia Herbs do NOT always contain the active ingredients in the exact amounts listed on their labels. The lab hasn’t tested GAIA HERBS NOOTROPIC FOCUS (for Brain and Cognitive Support, Vegan Liquid Capsules, 20 Count), so I don’t know anything about the product other than what’s on the label.The active ingredients are saffron, lemon balm, ginkgo, and spearmint. When I checked these against my prescription drugs (using the Web MD supplements interactions checker), a serious interaction turned up. Spearmint can alter metabolism, changing the level of atorvastatin (generic for Lipitor) in the blood, so the use of spearmint along with atorvastatin should be monitored.The effectiveness of spearmint in improving memory is questionable, due to insufficient evidence. (Several web pages that I found said this.) Because of the possible serious drug interaction, I decided NOT to personally test this supplement.Also, Ginkgo may interfere with metabolism. It is an ingredient that is frequently “shorted” in OTC supplements.As always, the only real way to test a supplement is to take it and see whether it works for you. FDA approval isn’t required for the sale of dietary supplements, so it’s up to you to research any supplement that you’re considering to determine its effectiveness and safety.