Modalert 200 Australia promotes alertness and manages daytime drowsiness, particularly in narcolepsy. It seldom affects respiration and is well-tolerated. It has adverse effects like any drugs. Some users may have trouble breathing, although this is unusual. If you have a history of respiratory disorders or develop breathing issues while taking Modafinil, see a doctor immediately. Modafinil usually causes minor headaches, nausea, and sleeplessness. Report any unexpected symptoms and follow your doctor's orders. They can help you decide whether Modafinil is suitable for you and change your treatment approach. Effective side effect management requires regular monitoring and open contact with your doctor.