Best Herbs for Low Mood (2025): What the Clinical Evidence Shows
Several herbs have genuinely strong clinical evidence for low mood -- stronger in some cases than many people realise. This guide covers the best-evidenced options, ranked by evidence quality.
Not sure which suits you? Take our free quiz.
1. St. John's Wort -- Best overall for mild depression
The most studied herbal antidepressant. A Cochrane review of 29 trials found it significantly more effective than placebo and comparable to standard antidepressants for mild-to-moderate depression, with fewer side effects. Important: significant drug interactions (contraceptive pill, blood thinners, some medications). 300mg three times daily standardised extract. Always check interactions with a pharmacist.
2. Saffron extract -- Most surprising evidence base
30mg saffron extract daily has been directly compared to fluoxetine and imipramine in head-to-head trials with comparable effectiveness and fewer side effects. A 2014 meta-analysis of 5 RCTs confirms significant antidepressant effects. Remarkable evidence for a natural supplement.
3. Rhodiola rosea -- Best for fatigue-related low mood
A 2015 JAMA Psychiatry study found rhodiola significantly more tolerable than sertraline with meaningful mood benefits. Particularly suited to low mood with fatigue and lack of motivation. 200-400mg standardised extract daily.
4. Curcumin (turmeric) -- Best anti-inflammatory approach
Multiple RCTs find curcumin effective for mild depression, particularly where inflammation is a driver. Head-to-head comparison with fluoxetine found comparable effects. 500-1,000mg curcumin with piperine daily.
5. Ashwagandha -- Best for stress-driven low mood
When low mood is secondary to chronic stress and depleted resilience, ashwagandha addresses the root cause. 300-600mg daily.
Related guides
Related Articles
FAQ
What is the best herb for depression?
St. John's Wort has the strongest evidence base overall but has important drug interactions. Saffron extract (30mg daily) has surprisingly strong evidence and good safety. Always discuss with a healthcare professional for diagnosed depression.
Do herbal antidepressants work?
St. John's Wort, saffron and rhodiola have meaningful RCT evidence that they work for mild-to-moderate low mood. The evidence is genuine, not just anecdote. They are not appropriate for severe depression.
Remedy Healer provides educational information. Not medical advice.