Clinical Studies: Peace, Love & ZZZs

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The research behind Peace, Love & ZZZs

Guided by the science. Grown by nature.

Peace, Love & ZZZs is our melatonin-free sleep formula, made to support restful sleep and help settle a racing mind so bedtime feels calmer.* It pairs seven botanicals with magnesium bisglycinate. Two of those choices follow the research directly: valerian beside the partner herbs its trials used most, and magnesium bisglycinate, the form a 2025 sleep trial tested.

Each study below is published and linked, with who took part, what they took, how much, for how long and what the researchers found.

Capsules, one serving (two capsules, once a day): 150 mg valerian root extract · 150 mg lemon balm extract · 100 mg passionflower extract · 80 mg magnolia bark extract · 75 mg hops flower extract · 75 mg chamomile flower extract · 75 mg holy basil (tulsi) leaf extract · 75 mg magnesium (as magnesium bisglycinate chelate). Melatonin-free.

Why it is built this way

Valerian with its partners

The same review found that valerian may work best alongside partner herbs. Hops was the partner used most often in the trials, then lemon balm, then passion flower.[1] All three are in this formula with the valerian.

Magnesium as bisglycinate

Magnesium bisglycinate is the form a 2025 Leibniz University Hannover trial tested in adults who reported poor sleep.[2] Our formula uses magnesium bisglycinate chelate.

What the studies found

Valerian first. In 2020, researchers from Chiba University in Japan and the University of Westminster in London reviewed 60 studies of valerian covering 6,894 people aged 7 to 80, with no severe adverse events reported.[1]

Passion flower

  • Soonchunhyang University, South Korea, 2020: 110 adults with insomnia disorder took a passion flower extract or a placebo for two weeks. Measured overnight in a sleep lab, total sleep time rose 23.05 minutes from the start of the study on passion flower and stayed flat on placebo (−0.16 minutes, p = 0.049).[3]

Chamomile

  • Shiraz University of Medical Sciences, 2024: a review of 10 clinical trials of chamomile with 772 adults. Pooled from five trials, scores on the Pittsburgh Sleep Quality Index, where lower is better, fell 1.88 points more with chamomile than in the control groups (95% confidence interval −3.46 to −0.31). Falling asleep improved in three of the four trials that tracked it, and staying asleep in two of three.[4]

What we say about Peace, Love & ZZZs: it supports restful sleep.*

Holy basil

  • Clinical Research Australia and Murdoch University, 2022: 100 adults who had been stressed for more than a month and had sleep problems took 125 mg of a standardized holy basil extract twice a day, or a placebo, for eight weeks. Perceived Stress Scale scores and scores on a sleep-severity questionnaire improved more on holy basil than on placebo (p = 0.003 and p = 0.025). The sleep-questionnaire scores fell 48% from the start of the study on holy basil and 27% on placebo.[5]
  • Disclosure: the extract's maker funded the trial and supplied the capsules.

What we say: it supports a healthy stress response and more restful nights.*

Magnesium

  • Leibniz University Hannover, 2025: 155 healthy adults who reported poor sleep took 250 mg of magnesium a day as magnesium bisglycinate, or a placebo, for four weeks. Scores on a standard sleep questionnaire fell 3.9 points from the start of the study on magnesium and 2.3 points on placebo (p = 0.049).[2]
  • Disclosure: the university funded the trial internally. One co-author runs a contract research firm that receives research funding from nutraceutical companies.

What we say: it supports your natural wind-down toward sleep.*

The other ingredients

Hops flower extract, 75 mg. Hops is valerian's traditional partner, and the partner used most often in the valerian trials reviewed above.[1]

Lemon balm extract, 150 mg. Lemon balm, a member of the mint family long steeped as an evening tea, is here for calm. It was the second most common partner herb in those valerian trials.[1]

Magnolia bark extract, 80 mg. Magnolia bark is here on tradition, a mainstay of traditional Chinese herbal practice.

Every product's published third-party test results are on our testing page.

See Peace, Love & ZZZs →

Sources

Last reviewed: October 21, 2026.

  1. Shinjyo N, Waddell G, Green J. Valerian Root in Treating Sleep Problems and Associated Disorders-A Systematic Review and Meta-Analysis. Journal of Evidence-Based Integrative Medicine. 2020;25:2515690X20967323. PubMed 33086877. doi:10.1177/2515690x20967323.
  2. Schuster J, et al. Magnesium Bisglycinate Supplementation in Healthy Adults Reporting Poor Sleep: A Randomized, Placebo-Controlled Trial. Nature and Science of Sleep. 2025;17:2027-2040. PubMed 40918053. doi:10.2147/nss.s524348.
  3. Lee J, et al. Effects of Passiflora incarnata Linnaeus on polysomnographic sleep parameters in subjects with insomnia disorder: a double-blind randomized placebo-controlled study. International Clinical Psychopharmacology. 2020;35(1):29-35. PubMed 31714321. doi:10.1097/yic.0000000000000291.
  4. Kazemi A, et al. Effects of chamomile (Matricaria chamomilla L.) on sleep: A systematic review and meta-analysis of clinical trials. Complementary Therapies in Medicine. 2024;84:103071. PubMed 39106912. doi:10.1016/j.ctim.2024.103071.
  5. Lopresti AL, et al. Frontiers in Nutrition. 2022;9:965130. PubMed 36185698. doi:10.3389/fnut.2022.965130.

*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.