Brain Nourishing Herbal Tonic is a tincture meant to be taken for 2 months at a time, followed by a break of a couple of weeks, to slowly build up the nourishment the brain craves and loves. I personally felt improvement very quickly in sharpness and alertness, even though for some it may take longer to feel the effects. Ingredients include ginkgo, famous for improving brain function, circulation and mood; gotu kola, which helps with cognitive function and reduces anxiety, insomnia and inflammation; peppermint which is great for headaches, indigestion, and alertness; and rosemary, well-known for its antioxidant, anti-aging and memory-improvement qualities. 
If you are not on blood thinners and don't have seizures and are not pregnant, this may be the daily boost you are looking for! Taking a complicated course, simply getting older, or just wanting to boost your brain to be the super player it's supposed to be in your life, you may want to try this!