Modalert is used for Narcolepsy (Uncontrollable daytime sleepiness). Know it’s uses, side effects, reviews, composition and precautions only on 1mg . Know Modalert 100mg Tablet 10'S uses, side-effects, price, substitutes, drug interactions, precautions, warnings, expert advice and more on Netmeds. Modalert 100 mg is a pharmaceutical medication containing the active ingredient Modafinil, which is classified as a wakefulness-promoting agent. Modalert 100 is a prescription drug that contains Modafinil and helps with sleep disorders. Learn about its uses, dosage, side effects, precautions, and alternatives from this web page.