Chamomile

Chamomile is a common name for several daisy-like plants of the family Asteraceae. These plants are best known for their ability to be made into an infusion which is commonly used to help with sleep and is often served with honey or lemon, or both.

Empath: The Luckiest Smurf stories
In the EMPATH: The Luckiest Smurf story series, chamomile is used by Tapper Smurf for making tea as a relaxant. It is also used as an ingredient for cigarettes.