Concentration depends on context, surroundings, motivation. It can be trained and improved. To use a drug as a quick remedy is dangerous and frankly rather sad.

Concentration depends on context, surroundings, motivation. It can be trained and improved. To use a drug as a quick remedy is dangerous and frankly rather sad. Please rethink what you're doing. To put my tin-foil hat on: I consider ADHD an artifical diagnosis pushed by the pharma companies.