A male client with bipolar disorder who began taking lithium carbonate five days  ago  is  complaining of excessive thirst, and the RN finds him attempting to drink water from the  bathroom sink faucet

A male client with bipolar disorder who began taking lithium carbonate five days  ago  is  complaining of excessive thirst, and the RN finds him attempting to drink water from the  bathroom sink faucet. Which intervention should the RN implement?

A. Report the client’s serum lithium level to the HCP.

B. Encourage the client to suck on hard candy to relieve the symptoms.

C. No action is needed since polydipsia is a common side effect.

D. Tell the client that drinking from the faucet is not allowed.