Respected Sir/Madam, I've always had concentration issues and lacked focus and motivation while studying.I did extensive research on the internet and got myself cognition enhancement drug i.e modalert 100 .Today was the first day using it and I haven't slept for 24 hours straight but had the most productive day of my life .It feels great .I want to know if using these chemicals are good because I am planning to use it more frequently and also ,do you have any other suggestions.Please help me I desperately need something external to help me achieve academic excellence.(I'm pursuing CA,failed to crack Medical entrance earlier)