Herbal Interventions for Depression Management

Herbal interventions have emerged as complementary or alternative strategies for managing depression, drawing on centuries of traditional use and an expanding evidence base. Key botanicals such as Hypericum perforatum (St John’s wort), Crocus sativus (saffron), Melissa officinalis (lemon balm) and Rhodiola rosea (roseroot) exhibit multifaceted actions including inhibition of monoamine reuptake, modulation of neuroinflammation and regulation of the hypothalamic–pituitary–adrenal axis. Phytochemicals such as hyperforin, hypericin, crocin and flavonoids interact with central and peripheral targets to enhance neurotrophic support, notably brain-derived neurotrophic factor, and to restore neurotransmitter balance. Emerging research also highlights roles for epitranscriptomic modifications, lipid membrane dynamics and the gut–brain axis in mediating antidepressant efficacy. Together, these findings underscore the global relevance of phytopharmacotherapy, its potential to reduce side-effect burden and its value in personalised treatment regimens under clinical supervision.

Research from Nature Portfolio

Recent studies have elucidated how a defined extract of St John’s wort (Ze 117) counteracts stress-induced alterations in cellular lipid composition to restore receptor function. In C6 glioma cells exposed to glucocorticoid-induced fluidisation of the plasma membrane, Ze 117 increased cellular cholesterol content and reversed reductions in β-arrestin 2 recruitment to the 5-HT1a receptor. These in vitro results support a novel mechanism whereby modulation of membrane fluidity and lipid metabolism contributes to the antidepressant actions of herbal extracts, extending understanding beyond classical neurotransmitter targets.

Herbal Interventions for Depression Management publication trend

The graph below shows the total number of articles in herbal interventions for depression management across all publications each year (not limited to Nature Index journals).

Technical terms

Monoamine reuptake inhibition: blockade of neurotransmitter transporters, reducing reabsorption of serotonin, norepinephrine or dopamine into presynaptic neurons.

Neuroinflammation: an immune response within the central nervous system involving activation of glial cells and release of pro- and anti-inflammatory cytokines.

Brain-derived neurotrophic factor (BDNF): a neurotrophin that supports survival, growth and plasticity of neurons, often reduced in depressive states.

Membrane fluidity: the viscoelastic property of the lipid bilayer affecting receptor mobility and signal transduction in cell membranes.

β-arrestin 2 recruitment: the binding of β-arrestin proteins to activated G-protein-coupled receptors, modulating receptor desensitisation and downstream signalling.

References

1. Identification of molecular targets of Hypericumperforatum in blood for major depressive disorder: a machine-learning pharmacological study. Chinese Medicine (2024).
2. Anxiolytic, Antidepression, and Memory-Enhancing Effects of the Novel Instant Soup RJ6601 in the Middle-Aged of Female Rats. Foods (2024).
3. Depression and Its Phytopharmacotherapy—A Narrative Review. International Journal of Molecular Sciences (2023).
4. St. John's wort extract Ze 117 alters the membrane fluidity of C6 glioma cells by influencing cellular cholesterol metabolism. Scientific Reports (2024).
5. Hypericin Ameliorates Depression-like Behaviors via Neurotrophin Signaling Pathway Mediating m6A Epitranscriptome Modification. Molecules (2023).