Explication... Dr Ir. De Maerteleire : « Lorsque la salade pousse et que l'on coupe la tige, il en sort un liquide laiteux (lactucarium) que l'on peut recueillir. La laitue vireuse (Lactuca virosa L.) ...

When scratched, the plant secretes a milky white substance known as lactucarium. When dried, this compound resembles opium, a pain-relieving agent extracted from unripe seedpods of the opium poppy.

Burgess Pet Care is busting bunny "myths" during its Rabbit Awareness Week, said the Daily Star, highlighting that the leafy green contains lactucarium – dubbed "rabbit opium" – which promotes ...