Final answer:
Communicate to the patient to not take lithium carbonate with thiazide diuretics and to avoid high doses of caffeinated beverages.
Step-by-step explanation:
Two correct statements to communicate to the patient concerning lithium carbonate are:
- Do not take with thiazide diuretics: Thiazide diuretics can reduce the clearance of lithium from the body, leading to increased lithium levels and potential toxicity.
- Avoid high doses of caffeinated beverages during the day: Caffeine can increase urine production, which may decrease the body's ability to retain lithium and result in lower lithium levels.