Click here to visit this side: https://bigpharmausa.com/adderall-vs-caffeine/ Adderall is a central nervous system stimulant. It works by increasing the brain’s neurotransmitter levels, like dopamine and norepinephrine, which can improve focus, attention, and alertness. Caffeine also acts as a stimulant by blocking the effects of adenosine, a neurotransmitter that promotes sleep and relaxation. Adderall Vs Caffeine: both have the same side effects, like Headache, Increased heart rate and blood pressure, feeling jittery or anxious, and Tremors, Trouble sleeping, and Severe nausea.