A nurse is educating a client about a new prescription for morphine sulfate (Astramorph). Which of the following statement should the nurse include in the teaching about morphine?

Morphine sulfate acts as an antagonist on the mu and kappa receptors.

Morphine sulfate acts as an agonist on the mu and kappa receptors

Morphine sulfate has a less analgesic effect compared to butorphanol.

Morphine sulfate has a low potential for abuse, causing little euphoria.