DailyMed: About DailyMedSkip to DrugLabel content Download the FDA official PDF of this label Lithium toxicity is closely related to serum lithium levels, and can occur at doses close to therapeutic levels. Facilities for prompt and accurate serum lithium determinations should be available before initiating therapy (see DOSAGE AND ADMINISTRATION).The capsules contain talc, gelatin, FD C Red No. 40, titanium dioxide, and the imprinting ink contains FD C Blue No. 2, FD C Yellow No. 6, FD C Red No. 40, synthetic black iron oxide, and pharmaceutical glaze. The tablets contain calcium stearate, microcrystalline cellulose, povidone, sodium lauryl sulfate, and sodium starch glycolate. The solution contains alcohol, sorbitol, flavoring, water, and other ingredients.Lithium may cause fetal harm when administered to a pregnant woman. There have been reports of lithium having adverse effects on nidations in rats, embryo viability in mice, and metabolism in-vitro of rat testis and human spermatozoa have been attributed to lithium, as have teratogenicity in submammalian species and cleft palates in mice. Studies in rats, rabbits and monkeys have shown no evidence of lithium-induced teratology. Data from lithium birth registries suggest an increase in cardiac and other anomalies, especially Ebstein s anomaly. If the patient becomes pregnant while taking lithium, she should be apprised of the potential risk to the fetus. If possible, lithium should be withdrawn for at least the first trimester unless it is determined that this would seriously endanger the mother.