rejuve.plus Analisi del sito web per aprile 2026

Based on placebo-controlled studies, these four supplements may improve sleep. A nootropic is a substance that, if used properly, safely enhances the cognitive functions of the user. As public interest in cognitive enhancers escalates, the demand for high-quality evidence on the safety and efficacy of nootropics seems to outgrow the supply of that information. Although new placebo-controlled studies are published frequently, they can be hard to read and misrepresentative of the entire body of knowledge the scientific community has provided on the effects of nootropics. These are some of the reasons why we systematically went through 527 placebo-controlled studies on the effects of 127 nootropics and put together a list with the four most science-backed ones for improving sleep. If a nootropic was not included in this list, it doesn’t necessarily mean it’s ineffective for improving sleep. It likely means there is less research on the effects of that compound in healthy humans than there’s for each nootropic that made it on to the list. Out of the 527 studies, five included measures of sleep. A total of 422 participants had their sleep tested, and four nootropics were assessed for safety and efficacy for improving sleep. Based on this body of evidence, these are the four most science-backed nootropics for improving sleep in healthy humans: Ashwagandha Tulsi Turmeric Lion's Mane Ashwagandha In the 1 study we reviewed which examined the effects of Ashwagandha on measures of sleep, 58 participants were included. The study found a large positive effect on sleep from the use of Ashwagandha. The evidence we reviewed also suggests that Ashwagandha can improve: Mood (small effect) Nervousness (small effect) Memory (minute effect) Physical performance (small effect) Focus (small effect) Energy (small effect) Sociality (small effect) Stress (moderate effect) Mindfulness (small effect) Risks Side effects Less than 10% experience: Joint pain Abdominal pain Muscle pain Le