Today, modern research confirms what Ayurveda has always understood: cognitive health depends on circulation, nervous system balance, endocrine regulation, and digestive function. And at the center of this neurological equilibrium are four powerhouse botanicals: Brahmi, Ashwagandha, Gotu Kola, and Bacopa. These herbs are not for everyone or for every brain issue. Choose the wrong one, and not only will the initial complaint remain, but cause other areas to be aggravated.