Relora (Magnolia + Phellodendron)
Magnolia officinalis · Phellodendron amurense · Honokiol · Magnolia bark
Snapshot
| Indications | Contraindications |
|---|---|
Relora is a proprietary blend of Magnolia officinalis and Phellodendron amurense bark extracts; the magnolia neolignans magnolol and honokiol are its main constituents. Both are reported to act through gamma-aminobutyric acid (GABA) pathways and cannabinoid-like activity5. People take it for stress, specifically transitory anxiety and stress-related eating with weight gain, and for mood and sleep symptoms in menopause. The typical patient is an overweight premenopausal woman who eats more under stress2.
Evidence comes from small pilot trials.1 A randomized controlled trial (RCT) of Relora found less transitory anxiety than placebo but no change in long-standing anxiety, salivary cortisol, or sleep1. A companion pilot found weight maintained in the treatment group while the placebo group gained. Menopausal benefit comes from a multi-ingredient product that included magnolia extract, so the effect cannot be attributed to magnolia alone. In 2021, a honokiol-enriched magnolia bark extract showed anxiolytic-like activity in animal behavioral tests and protected cultured neuronal cells, with no human trial of that extract6. Relora is marketed mainly as capsules; see Form comparison.
A safety review notes that an interaction with pharmaceutical agents cannot be excluded because magnolol and honokiol undergo glucuronidation7.
Last updated October 15, 2026. Read how we make monographs.
In the full monograph
51 sources, 35 studies
- When to useThe situations practitioners use it for, each with the reason and the study behind it.
- SafetyWho should avoid it, who needs extra care, and the side effects reported in studies.
- InteractionsThe medicines and supplements it interacts with, the effect of each, and what labeling says to watch.
- Protocol notesThe doses used in studies, how and when they were taken, and how the forms on the market compare.
- How it worksWhat it is and how it works in the body, in plain terms.
- Published studiesThe studies behind each use, popular claims checked against them, and trials still under way.
- Word of mouthWhat patients and practitioners report online, kept separate from the clinical evidence.
- Clinical perspectiveA closing read of where the evidence is solid, where it is thin, and what has not been studied.
Sources
- 1Effect of a proprietary Magnolia and Phellodendron extract on stress levels in healthy women: a pilot, double-blind, placebo-controlled clinical trial.pubmed.ncbi.nlm.nih.govKalman, Feldman, Feldman et al. · Nutrition journal · 2008 · Pubmed
- 2Effect of a proprietary Magnolia and Phellodendron extract on weight management: a pilot, double-blind, placebo-controlled clinical trial.pubmed.ncbi.nlm.nih.govGarrison, Chambliss · Alternative therapies in health and medicine · 2006 · Pubmed
- 3Soy isoflavones, lactobacilli, Magnolia bark extract, vitamin D3 and calcium. Controlled clinical study in menopause.pubmed.ncbi.nlm.nih.govMucci, Carraro, Mancino et al. · Minerva ginecologica · 2006 · Pubmed
- 4Detection of DNA adducts formed by aristolochic acid in renal tissue from patients with Chinese herbs nephropathy.pubmed.ncbi.nlm.nih.govSchmeiser, Bieler, Wiessler et al. · Cancer research · 1996 · Pubmed
- 5Is there a potential of misuse for Magnolia officinalis compounds/metabolites?pubmed.ncbi.nlm.nih.govSchifano, Guarino, Papanti et al. · Human psychopharmacology · 2017 · Pubmed
- 6A honokiol-enriched Magnolia officinalis Rehder & E.H. Wilson. bark extract possesses anxiolytic-like activity with neuroprotective effect through the modulation of CB1 receptor.pubmed.ncbi.nlm.nih.govBorgonetti, Governa, Manetti et al. · The Journal of pharmacy and pharmacology · 2021 · Pubmed
- 7Safety and Toxicology of Magnolol and Honokiol.pubmed.ncbi.nlm.nih.govSarrica, Kirika, Romeo et al. · Planta medica · 2018 · Pubmed