Lithium carbonate extended-release tablets 0.3 g if for a single or single day dose is not large, maintenance therapy single day at 0.6 to 0.9 g, children’s medication should be used from a small dose. Lithium carbonate extended-release tablets are used for the treatment of mania, schizo-affective psychosis, and prevention of depressive episodes. Lithium carbonate extended-release tablets 0.3 g both single day dosage and single dosage dosage is not large, used for the treatment of single day dosage in 0.9 ~ 1.5 g, maintenance therapy single day in 0.6 ~ 0.9 g. Children with the drug should start with a small dose, slowly increase the dose. Common adverse reactions to lithium carbonate extended-release tablets are irritable thirst, polyuria, nausea, dry mouth and constipation, diarrhea, and epigastric pain. Contraindications are those with severe heart disease and renal insufficiency. Note that the therapeutic and toxic amounts of lithium salts are close to each other, and blood lithium concentration should be monitored during the medication period for monitoring, in order to facilitate the adjustment of the dose. Lithium carbonate extended-release tablets should be taken in strict accordance with medical advice, and should not increase the dose of the drug without authorization.