This sleep supplement by Primal Harvest is formulated with nine sleep-supporting ingredients: valerian root, tryptophan, GABA, chamomile, lemon balm, hops, lavender, melatonin, and magnesium bisglycinate. While this unique blend may support restorative sleep, the "one-size-fits-all" dosage approach may not be optimal for everyone. Individual needs can vary, and some people require different amounts of certain ingredients for the best effect. Not only that, but this supplement only has 100 mg of GABA and 3 mg of melatonin per serving (whereas our #1 choice had 700 mg of GABA and 5 mg of melatonin). These lower doses may make it harder to fall asleep quickly and achieve uninterrupted sleep, an issue several customers have mentioned in recent reviews. Due to these factors, Primal Harvest has dropped to third on our list of Best Sleep Supplements.