From 10 days to 45 days. You need to continue treatment depending on the type of organisms in your lungs.be patient until the doctor says ok.if there is tuberculosis then the treatment would be 6-9 months.

Hi...... The effusion itself generally does not require treatment if it is asymptomatic because many effusions resorb spontaneously when the underlying disorder is treated, especially effusions due to uncomplicated pneumonias, pulmonary embolism, or surgery. Pleuritic pain can usually be managed with NSAIDs or other oral analgesics....