This Concoction causes drowsiness. A person who ingests it will, when it takes effect, fall into a natural slumber. They must make a Body save or become Asleep. They must also make a Foresight save to realize that they've been affected by a Concoction.

Incense: The Body save TN is 12, and the Foresight save TN is 18.

Powder: The Body save TN is 16, and the Foresight save TN is 14.

A person who is under the influence of Sweet Sleep cannot suffer any negative affects caused by dreams. This includes any spells that affect the user's dreams, such as Somnambulism or Phantasmagoria.