[Klockan]

The main points of it is that it increases arousal so it is much easier to focus on what is important right now (fight or flight state, you don't zone out if there is an angry bear in front of you).

The side effects comes from the increased arousal as well, for me it means my heart rate increased from 60 bpm to 80, I sleep 1 hour less per night and it is easier to miss meals so I have lost some weight. I have tried several other forms of psychoactive medications before and this have the least negatives and most positives so far.