Modafinil is a common prescription and supplement for job concentration. Modalert 200 mg Australia is recommended for narcolepsy and sleep problems but used off-label for alertness and focus. Consult your doctor before taking any drug. ADHD stimulants like Adderall and Ritalin are other choices. Focus may be improved with non-stimulants like atomoxetine. Some individuals benefit from L-theanine, omega-3s, and ginkgo biloba supplementation. To maintain cognitive performance, sleep, exercise, and a balanced diet are crucial. Discuss risks and benefits with a doctor before using nonprescription drugs.