What it is
Melissa officinalis (lemon balm) is a lemon-scented herb in the Lamiaceae (mint) family with a 2,000-year history of use for anxiety, insomnia, and cognitive agitation. Standardised extracts rich in rosmarinic acid (5–10%) have demonstrated anxiolytic, antidepressant, and sleep-enhancing effects in clinical trials. The 2024 phytosome trial confirmed significant improvements in sleep quality and insomnia severity.