Poppy - Papaver rhoaes .L 
The poppy is known for its soporific effect. The plant is also and anti-tussive, expectorant, and soothes the throat and respiratory tract. Removing tough mucus from the respiratory system avoids irritations which causes cough. Poppy is mainly used in mild conditions like common cold, moderate insomnia, low fever and menstrual cramps, but also with whooping cough, larynx inflammation with hoarseness and throat and tonsillitis.