There is no single prescription medication to safely guarantee both sharp focus and calmness without a diagnosed condition like ADHD or anxiety. For daily support, natural supplements like L-Theanine (which promotes alert relaxation, especially when paired with moderate caffeine) or Ashwagandha (to help manage stress) are often recommended. However, the most effective foundation for mental clarity and calm is lifestyle-based: prioritizing 7-8 hours of quality sleep, regular exercise, and mindfulness practices. Please consult a healthcare provider before starting any new supplement to ensure it is safe for you.