Modalert is a long-established Indian trade name for modafinil, and the number in the title is the tablet strength - 100 mg, the lower of the two the drug is commonly pressed at, ten tablets to the strip.
The compound promotes wakefulness through inhibition of the dopamine transporter and activity in the orexin system rather than by broad central stimulation, which is what separates it pharmacologically from the classical stimulants. Between this pack and the 200 mg version nothing changes but that figure; the formulation behind it is the same.
