Pour simmering water over the leaves and infuse covered for a few minutes to preserve the volatile essential oils. Drink warm, preferably in the evening or after meals. 1 to 2 teaspoons of dried leaves per cup, 2 to 3 times daily.
Fresh aerial parts are macerated in alcohol for several weeks away from light, then filtered. The specific use and dosage should be established with a qualified professional, as the concentration of active constituents is higher than in infusion. Dosage to be confirmed with a healthcare professional or recognized pharmacopoeia before use.
A cooled, more concentrated infusion is applied with a clean cloth to the area of concern. This traditional practice remains occasional and does not substitute for dermatological advice. Dosage to be confirmed with a healthcare professional or recognized pharmacopoeia before use.
It is commonly found in vegetable gardens and ornamental gardens alike, as it grows readily in Europe; it is also available dried in herbalist shops or in commercial tea bags.
The leaves are best harvested in spring and early summer, before flowering, in dry weather to preserve their lemony fragrance.