Lactuca Virosa 1X (Q) (30ml)Lactuca Virosa(Mother Tincture) Other Name: Wild lettuce, bitter lettuce, laitue vireuse,opium lettuce Common Name: Common lettuce, Acrid Lettuce Causes & Symptoms for Lactuca Virosa Headache, with affections of respiratory organs. Vertigo with heaviness of the lower limbs. It is said to promotes lactation with effective results. Sense of lightness and Tightness affecting whole body. Constant tickling cough, with difficult and suffocative breathing.