Reviewed guidance
Small controlled studies suggest that some standardized lemon-balm extracts may help with short-term feelings of calm during stressful cognitive tasks, but results are mixed. A 2026 trial did not improve overall calmness on its primary measure, even though some transient calmness-recovery and cognitive outcomes favored the extract. Evidence is therefore limited and product-specific.
Optional short-term relief of mild situational stress using a standardized oral lemon-balm extract comparable to products studied under laboratory or cognitive-demand stress; not a treatment for an anxiety disorder, panic disorder, depression, or crisis.
How to use it: If lemon balm is used for a stressful day or event, do not translate a trial dose into homemade tea or tincture equivalents. EMA recognizes lemon-balm leaf tea and other oral preparations for traditional relief of mild mental stress, but traditional-use recognition is not the same as proof that tea reproduces the effects of a studied standardized extract.
Do not use lemon balm as a substitute for urgent mental-health or medical care. Use caution with sedating medicines or other sedating herbs, and avoid assuming safety during pregnancy or breastfeeding because evidence is limited. Stop use if it causes excessive drowsiness, dizziness, or another unexpected reaction.
Get medical care for symptoms that are severe, last longer than expected, get worse, or otherwise concern you.
Practical ways to use the ingredient may not provide the same form or amount discussed in the evidence.
Evidence transparency
European Medicines Agency
EMA recognizes long-standing traditional use of melissa leaf preparations for relief of mild symptoms of mental stress; this does not establish equivalence between tea and modern standardized extracts.
Psychosomatic Medicine
Small randomized crossover trial supports an acute, standardized-extract signal for calmness under laboratory-induced stress; sample size was only 18.
Therapeutic Advances in Psychopharmacology
Larger randomized trial found no improvement in the primary overall calmness outcome but did find transient calmness-recovery and selected cognitive benefits; product-specific and commercially involved, so confidence remains low.
National Center for Complementary and Integrative Health
Controls the non-herbal stress-management context, including relaxation techniques, breathing, and the need not to delay conventional care.