I need something stronger than coffee. Only once in a while to get things done. I need some type of stimulant to pull all nighters. I have AFib so I need something that won't cause my heart to race badly. I am 62 and am a new member. I know nothing about drugs and have only taken Rx's. I have both chronic fatigue and chronic pain and fibromyalgia. Tired of being in pain and called lazy. My house is getting very messy and I just have to get stanima. I am 62.