You could use herbal medicine to reduce anxiety and treat insomnia. Digestive upset is a downside to ashwagandha. So is withdrawal.
Curiosity is growing for various cognitive enhancers. Nicotine for brain power delivers mixed & uncertain results: both positive and negative.
Amlodipine (Norvasc) is thought to be a super safe blood pressure medicine. Many visitors report side effects including swollen gums & feet.