In the early modern period, Lettuce had many medicinal uses. When mixed with breast milk and an egg, it was applied to the temples of the patient, believed to induce sleep. Lettuce was also used to stop skin inflammations, applied to blisters and burns as it was believed in contemporary humoral theory to be a “cold and wet” herb. Lettuce was also eaten after supper to prevent drunkenness! It was imagined stopping the alcohol vapours which were widely seen to cause drunkenness from reaching the brain.
Please note this information is research based on historic documents….and is not modern advice for health and wellness!