Ritalin 20 mg is an immediate-release formulation, meaning it starts working within 30 to 60 minutes after ingestion and typically lasts for about 4 to 6 hours. Ritalin 20 mg pill helps to focus attention, shut out distractions, and allow impulsive people to think before they act. When taken as prescribed by a healthcare professional, 20 mg Ritalin can be effective in...