The full name of the spray is aerosolized; isoniazid is not available as a spray. Isoniazid is available as isoniazid tablets and isoniazid injection, isoniazid is not available as a spray. Isoniazid is used in combination with other antituberculosis medications for the treatment of all types of tuberculosis, including tuberculous meningitis and infections caused by other mycobacteria, and is indicated for the prevention of all types of tuberculosis when used alone. Isoniazid may cause unsteady gait or numbness pins and needles, burning sensation or pain in the fingers, dark-colored urine, yellowing of the eyes or skin, and optic neuritis. It is contraindicated in patients who are allergic to the product. It is contraindicated in patients with abnormal liver function, psychiatric patients and epileptic patients. Pregnant and lactating women should also avoid the application. If you need to use the drug, you need to use it under the guidance of a doctor, and you should not use the drug on your own to avoid adverse effects on the body.