Final answer:
Slurred speech is suggestive of lithium toxicity and should be reported to the provider.
Step-by-step explanation:
Slurred speech is suggestive of lithium toxicity. When a person experiences lithium toxicity, it can result in various symptoms, including slurred speech. This is an abnormal side effect of lithium and should be reported to the healthcare provider. Slurred speech is not indicative of improved mental function or reflecting normal speech patterns.