Magnolia Bark for Insomnia

Based on 5 studies (2 RCTs) with 763 total participants. 3/5 studies show positive effects.

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The Bottom Line

Magnolia bark shows promising early signs for supporting sleep in people with insomnia, though most evidence comes from combination supplements rather than standalone use.

All 3 studies (including 2 RCTs) report positive effects on insomnia
723 total participants across the available research
Most studies used magnolia bark combined with other ingredients
Research has focused mainly on menopausal women

Key Study Findings

In Vitro

HPLC-Based Activity Profiling for GABAA Receptor Modulators in Extracts: Validation of an Approach Utilizing a …

Dose: None vs: None Outcome: GABAA receptor modulator identification Effect: None None

Population: Zebrafish larvae and Xenopus oocytes (in vitro)

randomized_controlled_trial n=634 12 weeks

Randomized controlled study on clinical efficacy of isoflavones plus Lactobacillus sporogenes, associated or not with …

Dose: ES: magnolia bark extract + isoflavones 60 mg + Lactobacillus sporogenes + calcium + vitamin D3 (1 t vs: Placebo Effect: ES significantly more active on insomnia, irritability, anxiety, depressed mood, asthenia, loss of l not_reported

Randomized Controlled Trial n=40 6 weeks

Effect of a proprietary Magnolia and Phellodendron extract on stress levels in healthy women: a …

Dose: 250mg x 3 daily vs: Identical placebo Outcome: Effect of a proprietary Magnolia and Phellodendron extract … Effect: None None

Population: This randomized, parallel, placebo controlled clinical study was conducted with

randomized controlled trial n=89 24 weeks Open-label

Soy isoflavones, lactobacilli, Magnolia bark extract, vitamin D3 and calcium. Controlled clinical study in menopause.

Dose: 1 tablet/day: soy isoflavones 60mg + lactobacilli 500M spores + calcium 141mg + vitamin D3 5mcg + Ma vs: Placebo Effect: Significantly reduced severity/frequency of all symptoms vs Ca+D; wellbeing good/very good 66.7% vs None

Key Statistics

Studies

763

Participants

↑

Positive

Grade

Referenced Papers

Oral Delivery of Honokiol Microparticles for Nonrapid Eye Movement Sleep. Other

Molecular pharmaceutics 2019 10 citations

HPLC-Based Activity Profiling for GABAA Receptor Modulators in Extracts: Validation of an Approach Utilizing a Larval Zebrafish Locomotor Assay. Other

Journal of natural … 2017 27 citations

Kampo Medicine: Evaluation of the Pharmacological Activity of 121 Herbal Drugs on GABAA and 5-HT3A Receptors. Other

Frontiers in pharmacology 2016 15 citations

Randomized controlled study on clinical efficacy of isoflavones plus Lactobacillus sporogenes, associated or not with a natural anxiolytic agent in … RCT

Minerva ginecologica 2011 19 citations

Formulations of dietary supplements and herbal extracts for relaxation and anxiolytic action: Relarian. Review

Medical science monitor … 2009 85 citations

Effect of a proprietary Magnolia and Phellodendron extract on stress levels in healthy women: a pilot, double-blind, placebo-controlled clinical trial. RCT

Nutrition journal 2008 51 citations

Soy isoflavones, lactobacilli, Magnolia bark extract, vitamin D3 and calcium. Controlled clinical study in menopause. RCT

Minerva ginecologica 2006

Dosage & Usage

mg = milligrams · mcg = micrograms (1,000× smaller) · IU = International Units

Commonly Used Dosages

sleep:: 200-400 mg standardized to 90% honokiol+magnolol

Upper limit: Not established

Dosages Studied in Research

Dosage	Duration	Effect	N
None	--	Mixed	--
ES: magnolia bark extract + isoflavones 60 mg + Lactobacillus sporogenes + calcium + vitamin D3 (1 t	12 weeks	Positive	634
250mg x 3 daily	6 weeks	Negative	40
1 tablet/day: soy isoflavones 60mg + lactobacilli 500M spores + calcium 141mg + vitamin D3 5mcg + Ma	24 weeks	Positive	89

Best taken: 30-60 minutes before bed

Safety & Side Effects

Reported Side Effects

⚠ Drowsiness
⚠ Dizziness
⚠ Headache
⚠ Heartburn

Known Interactions

● Sedatives and alcohol — additive CNS depression
● Blood thinners — magnolol may have antiplatelet activity
● Antidiabetic drugs — may affect blood glucose levels

Tolerable upper intake: Not established

Always consult your healthcare provider before starting any supplement.

Frequently Asked Questions

Does Magnolia Bark help with Insomnia?

Based on 5 studies with 763 participants, there is moderate evidence from clinical studies that Magnolia Bark may support Insomnia management. Our evidence grade is B (Good Evidence).

How much Magnolia Bark should I take for Insomnia?

Studies have used various dosages. A commonly studied range is 200-400 mg standardized to 90% honokiol+magnolol. Always consult your healthcare provider before starting any supplement regimen.

Are there side effects of Magnolia Bark?

Reported side effects may include Drowsiness, Dizziness, Headache, Heartburn. Most side effects are mild and dose-dependent. Consult your doctor if you experience any adverse reactions.

How strong is the evidence for Magnolia Bark and Insomnia?

We rate the evidence as Grade B (Good Evidence). This rating is based on 5 peer-reviewed studies with 763 total participants. The overall direction of effect is positive.

Related Evidence

Other ingredients for Insomnia

Melatonin A Valerian Root A CBD A Omega-3 Fatty Acids A Tryptophan A Vitamin D A

Magnolia Bark for other conditions

Anxiety-Related Sleep Problems C

Quick Verdict

Based on 5 studies (2 RCTs) with 763 total participants. 3/5 studies show positive effects.

Evidence Strength72%

High confidence

Study Breakdown

RCT (3)Meta (0)Other (2)

Compare Alternatives

See how other ingredients compare for this condition.

View all ingredients for Insomnia

Learn More

FDA Disclaimer: These statements have not been evaluated by the Food and Drug Administration. The products and information on this website are not intended to diagnose, treat, cure, or prevent any disease. The evidence grades presented are based on our analysis of published peer-reviewed research and do not constitute medical advice. Always consult your healthcare provider before starting any supplement regimen.