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Melissa officinalis
Mint-family herb that modulates GABA for mild anxiety relief and sleep support — well-suited for daily use without sedation.
What the evidence says
Lemon Balm helped in about half (2/3) of the studies that measured an effect — promising, but not unanimous.
Most evidence is from high-quality meta-analyses and randomised trials published 2004–2025 with a typical study size of 64 participants.
Based on 27 studies · 4 meta-analyses · 16 RCTs · 9,938 total participants
Confidence
HighWhat the studies found
By outcome
Lemon Balm has an evidence score of 8.5/10 — very strong evidence based on 27 indexed studies, including 7 meta-analyses. Mint-family herb that modulates GABA for mild anxiety relief and sleep support — well-suited for daily use without sedation.
The commonly studied dose of Lemon Balm is 300-600mg extract. Research points to an estimated optimal dose around 600mg, with a minimum effective dose near 300mg. Individual response varies — start low and adjust.
The best time to take Lemon Balm is in the evening. Taking it with food is preferred. Lemon balm (Melissa officinalis) contains rosmarinic acid and triterpenoids that inhibit GABA transaminase, increasing GABA availability in the brain.
Last reviewed May 2026 · evidence from 39 studies · how we score
This information is for educational purposes only. It is not a substitute for professional medical advice. Always consult a qualified healthcare provider before starting, stopping, or changing any supplement or medication.
Lemon balm is a lemon-scented herb from the mint family with a long history of use for anxiety, sleep, and digestive upset. It works primarily through GABA modulation and has mild effects that are well-suited for daily use. Often combined with valerian for sleep or with other calming herbs for anxiety support.
Enhances calming GABA signaling
May support memory while calming
How Lemon Balm works — from molecular targets to health outcomes. Click an edge to see supporting research.This visualization is in beta — pathways are being refined and expanded.
300-600mg extract
Can be taken without food
| Form | Type |
|---|---|
| 💊Standardized extract capsules | Recommended |
| 🍵Tea | Alternative |
| 💧Tincture | Alternative |
| 💧Essential oil (aromatherapy) | Alternative |
Extracts are more potent than tea. Cyracos is a well-studied standardized extract.
Minimum: 1 weeks
Optimal: 4 weeks
Cycling: Not required
Note: Can be taken with or without food. Works acutely but may have cumulative benefits with regular use.
You can get lemon balm from these foods and drinks. Doses are typical per-serving estimates — actual content varies by brand, brew, cooking, etc.
300 mg per cup
1 cup from 1.5 tsp dried leaf, steeped 10 min.
Based on meta-analysis showing significant improvement in anxiety and depression scores (SMD: -0.98 for anxiety, -0.47 for depression). Effect sizes suggest moderate clinical benefit. Limited number of trials with small sample sizes reduce confidence.
Reduces anxiety while staying alert
Easier time falling asleep
Subtle improvement in mood
Limited data; traditionally considered safe but consult doctor
Generally safe in age-appropriate doses
May have additive calming effects
May affect thyroid hormone levels
Tip: Reduce dose
Tip: Usually resolves
Traditional combination for sleep
Enhanced sleep support
Both promote calm through different mechanisms
Gentle anxiety relief without drowsiness
Both have calming properties
Enhanced relaxation and heart rhythm support
Traditional calming combination
Comprehensive herbal anxiety support
Classic nervine combination
Gentle anxiety and sleep support
Lemon Balm is generally well-tolerated and considered safe for most healthy adults at recommended doses. The most commonly reported side effects are drowsiness, headache. Use caution if any of these apply to you: Thyroid conditions (may affect thyroid function).
Magnesium
Probably helpsSupports 300+ enzymatic reactions — critical for sleep, stress response, muscle function, and cognitive health.
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