Ashwagandha 90 Caps MNRAshwagandha is an adaptogenic herb used to manage stress, anxiety, and sleep problems by reducing cortisol levels. It also supports physical performance and muscle strength, and may improve heart health, blood sugar management, and brain function. While studies show potential, larger human trials are needed to confirm many benefits, and potential side effects can include gastrointestinal issues, headache, and drowsiness.