Targeted Blend
ZenRest
An evening powder with Reishi, 3 g glycine, 250 mg elemental magnesium, lemon balm, L-theanine and magnolia.
30 servings
$69.00one-time
View formulaShop by Goal
Explore Evening Formulas Without Added Melatonin
ZenRest is a melatonin-free powder with 3 g glycine, 250 mg elemental magnesium, 1 g Reishi, 600 mg lemon balm, 200 mg L-Theanine and 200 mg magnolia bark per 9 g serving. Mix it into 250-300 mL warm water 45-60 minutes before bed. It may cause drowsiness; do not combine it with alcohol or sedatives. Check the full product cautions before use.
Written by Healvo, which sells the products featured here. This is our product guide, with ingredient studies and evidence limits to help you compare formulas. Read our editorial standards.
Our Recommendation
ZenRest
An evening powder with Reishi, 3 g glycine, 250 mg elemental magnesium, lemon balm, L-theanine and magnolia.
Why This Works
Inside ZenRest
Key Actives
Amounts are shown per complete serving.
Reishi fruiting body extract
1,000 mg
Glycine
3,000 mg
Magnesium (as magnesium bisglycinate)
250 mg elemental
Lemon balm extract (leaf)
600 mg
L-theanine
200 mg
Magnolia bark extract
200 mg
Evidence
Ingredient evidence for ZenRest
Ingredient research and its limits
The finished Healvo formula has not been tested in these trials. Ingredient studies do not establish its effects, an individual result or a time to benefit. Amounts shown are manufacturing specifications; follow the final product label.
Source notes updated .
| Ingredient | Healvo amount per serving | Studied dose and preparation | Participants and duration | Findings and limits |
|---|---|---|---|---|
| Reishi fruiting body extract | Healvo amount per serving1,000 mgManufacturing specification | Evidence gap in this review No matching human trial is cited here for this Reishi preparation and serving amount for a daily calm, sleep or foundation benefit. This is a limit of the evidence presented, not a claim that no studies exist. | ||
| Glycine | Healvo amount per serving3,000 mgManufacturing specification | Studied dose and preparationBannai et al., 2012 3 g before bed Glycine taken separately from the other ZenRest ingredients | Participants and duration 7 healthy men analyzed after 2 of 9 recruits were excluded; experimentally restricted sleep 3 consecutive nights in a crossover experiment | Findings and limits Daytime fatigue was lower on day 1, not day 3; psychomotor vigilance improved. Limit: A very small, short study in sleep-restricted men does not establish chronic insomnia treatment or a result from ZenRest. Sharing a numerical dose is not finished-product evidence. |
| Magnesium (as magnesium bisglycinate) | Healvo amount per serving250 mg elementalManufacturing specification | Studied dose and preparationSchuster et al., 2025 250 mg elemental magnesium/day Magnesium bisglycinate capsules also providing 1,523 mg glycine/day from the chelate | Participants and duration 155 adults aged 18–65 reporting poor sleep 4 weeks | Findings and limits Self-reported Insomnia Severity Index improved slightly relative to placebo (small effect, d=0.2). Limit: Our elemental-magnesium amount matches numerically, but this trial also supplied glycine through its chelate and did not test our six-ingredient powder. It does not guarantee better sleep. |
| Lemon balm extract (leaf) | Healvo amount per serving600 mgManufacturing specification | Studied dose and preparationKennedy et al., 2004 Single 300 mg and 600 mg doses on separate days Standardized Melissa officinalis extract | Participants and duration 18 healthy volunteers under a laboratory stress task Acute crossover: assessed 1 hour after dosing, with 7-day washouts | Findings and limits The 600 mg dose increased self-rated calmness and reduced alertness during the laboratory task. Limit: Our extract is not confirmed equivalent. A single laboratory stress experiment does not establish chronic stress relief, insomnia treatment or a result from this formula. |
| L-theanine | Healvo amount per serving200 mgManufacturing specification | Studied dose and preparationHidese et al., 2019 200 mg/day before sleep Suntheanine L-theanine tablets | Participants and duration 30 adults aged 20–69 without major psychiatric illness 4 weeks per condition in a crossover trial | Findings and limits Some self-reported sleep subscales improved relative to placebo. Broader stress-score improvements were mainly within the L-theanine condition. Limit: This small study does not establish a product-specific effect or onset. Our material is not confirmed as the studied branded preparation; taking it in a blend or at another time is a different intervention. |
| Magnolia bark extract | Healvo amount per serving200 mgManufacturing specification | Evidence gap in this review No matching human trial is cited here for 200 mg of this magnolia extract alone for sleep; findings from combination products cannot be assigned to magnolia alone. This is a limit of the evidence presented, not a claim that no studies exist. | ||
These statements have not been evaluated by the FDA. Research is informational and does not constitute medical advice.
Compare formulas
Other formulas to explore
Compare ingredients, availability and product cautions before choosing another formula. Overlapping ingredients do not establish a benefit from combining products.
Coming soon3 g Glycine
ZenRest Recovery
3 g glycine + 2 g taurine, unflavored — an evening recovery powder with every milligram active
60 servings
Coming soon
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Targeted Blend
Daily Calm
A daily capsule blend with Reishi, root-only ashwagandha, Lion's Mane, lemon balm and L-theanine.
30 servings
$59.00one-time
View formulaCommon Questions
Frequently asked
Do ingredient studies prove ZenRest's effects?
The finished ZenRest formula was not tested in the cited ingredient trials. Participants, preparation, dose and duration differ across studies. Read the evidence notes below; they do not establish a product result or an individual time to benefit.
Does ZenRest contain melatonin?
No added melatonin is included. The six ingredients are Reishi, glycine, magnesium bisglycinate, lemon balm, L-Theanine and magnolia bark.
How do I prepare it?
Mix one 9 g scoop into 250-300 mL warm water, 45-60 minutes before bed. Follow the finished product label.
Can I combine it with other sleep products?
Do not combine with alcohol, benzodiazepines or other sedatives. Ask a healthcare provider before adding melatonin or other sleep supplements. ZenRest Recovery also contains 3 g glycine, so the two products overlap.
Who should check with a healthcare provider first?
Anyone taking medication, especially anticoagulants, antiplatelets or sedatives, or with a medical condition should seek advice first. It is not recommended during pregnancy or breastfeeding. Read the full product cautions.
Will it make me drowsy?
It may cause drowsiness. Do not drive or operate machinery after taking it. Individual responses vary.
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