Apr 22, 2019 · The absence of a warning for a given drug or drug combination in no way should be construed to indicate that the drug or drug combination is safe, effective or appropriate for any given patient. Multum does not assume any responsibility for any aspect of healthcare administered with the aid of information Multum provides. Lithium is also sometimes used to treat depression, schizophrenia (a mental illness that causes disturbed or unusual thinking, loss of interest in life, and strong or inappropriate emotions), disorders of impulse control (inability to resist the urge to perform a harmful action), and certain mental illnesses in children. Patient teaching - Patients must immediately report symptoms of infection, especially flu-like symptoms. - Avoid hot baths or showers as hypotension can occur. - Oral hygiene is important to avoid oral candidiasis. - Avoid overexposure to the sun as heatstroke can occur.