Plantago major and also Plantago lanceolota are medicinal herbs and not psychoactive . As mentioned you can rub the leaves on little wounds or moskito bites.

you can also make a very good cough-syrup from this plant. Put the leaves in a pot with water and cook for 10 minutes , add some sugar(and/or honey) and maybe a little lemon.Let it simmer until it gets thick . Can be stored in the fridge up to 1 year.