Nothing: Stimulants such as amphetamines and ritalin are used for ADHD concentration problems, but these stimulant properties may be a problem especially if taken late in the day. Caffene may be a milder choice and useful for your purpose.
Answered 12/13/2017
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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