The makers of Revive Daily cite 16 studies on the References page verifying various benefits linked to the formula. The company also lists its dosages and ingredients upfront, making it easy to compare the formula to other natural sleep aids and verify it works. We’ll review some of that evidence below to see how Revive Daily can provide science-backed sleep benefits.
Melatonin is one of the best-known natural sleep aid ingredients available today. Supplements contain anywhere from 0.5mg to 10mg of melatonin per serving, which makes the 10mg of melatonin in Revive Daily look high. Melatonin has been proven to work at doses between 0.5mg and 10mg. In this 2014 study published in Nutrition Journal, researchers found melatonin could help support sleep in some people but not others. Researchers found limited evidence melatonin can help shift workers improve hormonal phase shift changes, although some people continue to use melatonin nightly to help fall asleep without the side effects of sleep medication.
One of the largest ingredients in Revive Daily is L-arginine. Each serving of Revive Daily contains 1,200mg of L-arginine. Found in everything from sleep aid supplements to bodybuilding supplements, L-arginine has been linked to sleep in multiple studies. In this 2003 study, researchers found people with sleep apnea tended to have lower levels of circulating L-arginine than people without sleep apnea. Because of this connection, researchers believe there may be a link between sleep quality and L-arginine. In a separate study on rats, researchers found L-arginine increased slow wave sleep and reduced waking in rats, although rats did not experience a change in rapid eye movement sleep (REMS).
Ashwagandha has been used for centuries for health, wellness, and sleep. Studies show ashwagandha is an adaptogen, which means it helps your body respond to physical and mental stressors. Ashwagandha is a natural root extract believed to impact sleep through GABAergic activity. In studies on sleep-deprived rats, researchers found a connection between ashwagandha supplementation and quality sleep.
L-theanine is a natural compound in green tea and certain other natural substances. Many people take L-theanine to nullify the negative effects of caffeine – like jitters and anxiety. In this 2015 study, researchers found taking 200mg of L-theanine before bed was associated with improved sleep quality. Researchers also found L-theanine did not induce daytime drowsiness.
Other science-backed sleep supporting ingredients in Revive Daily include tryptophan (5-HTP), magnesium, and zinc, all of which are crucial for supporting your body’s natural sleep cycles. In this 2012 study published in the Journal of Research in Medical Sciences, for example, researchers found magnesium functioned as a GABA agonist and played a key role in the regulation of sleep. To test this theory, researchers told a group of 46 elderly patients to take 500mg of magnesium or a placebo daily for 8 weeks. Researchers concluded that magnesium improved subjective measures of insomnia, including insomnia severity index (ISI) score, sleep efficiency, sleep time, sleep onset latency, early morning awakening, and other measurements.
