The success rate of Modalert which contains modafinil, varies depending on the condition being treated, but it is generally considered effective in promoting wakefulness and reducing excessive daytime sleepiness in people with narcolepsy, and obstructive sleep apnea. Sleep and sleep disorders are connected with the change. Work Studies have shown that modafinil significantly improves arousal and cognitive performance in approximately 70 to 80% of patients with these conditions. However, individual responses may vary slightly People may experience only partial relief of symptoms or side effects that limit their use. Effectiveness is even higher when Modalert 200 Australia is used as part of a comprehensive treatment plan that includes lifestyle changes and management of the underlying condition.