Is it bad to take medications such as stimulants when you are trying to recover from a concussion?

Not really: Some stimulants will help focus attention and concentration, but if the head injury has affected you emotionally, there may be far more effective drugs, and a stimulant may worsen some emotional states, such as pseudo bulbar effectual disorder.

Not necessarily: They are often prescribed for post-concussive issues like acquired attentional problems. Talk with your doctor about safe use following head trauma