I have been on the Energy Tincture and the Nice Dreams Sleep Tincture for over 8 months and I have the AWESOME Energy and it last 4-6 hours depending on how much I take in the morning. My wife is Jealous because I fall asleep LESS than 5 minutes after my head hits the pillow!! and I always sleep in my stage II sleep. Believe me, do the research yourself. We have two stages of sleep.....STAGE 1 and STAGE 2. When we are in STAGE 2 Sleep, our bodies are at complete REST and we have better dreams!! You're not going to regret trying the product. Some people take longer for the product to have GREAT Effects. For me, I could tell by the 2 & 3 days that the product was working. I heard some people it takes at least 20 - 30 days to feel the great effects.....GO AHEAD AND TRY IT!!!!!