Vyvanse is favored by many due to its long-lasting effect, typically lasting up to 14 hours. Unlike other ADHD medications that wear off quickly, Vyvanse offers consistent symptom control throughout the day with less "crash" or rebound effects. This makes it particularly useful for those who need focus and control over extended periods, such as in academic or professional settings. The slow activation also minimizes the risk of misuse compared to other stimulants.