Waklert 150mg is a prescription wakefulness-promoting agent containing armodafinil. It is indicated for the treatment of excessive daytime sleepiness associated with narcolepsy, obstructive sleep apnea, and shift work sleep disorder. Armodafinil is the R-enantiomer of modafinil and is considered longer-acting at equivalent doses.

Waklert’s effects are generally described as lasting up to 14 hours, with peak plasma concentrations reached in approximately 1–2 hours. This is considered longer-acting than modafinil (Modacare 200mg), which peaks at 2–4 hours. The longer half-life of armodafinil (~15h vs ~12h for modafinil) means some patients find a lower dose is sufficient to achieve the same clinical effect.

Both Waklert and Nuvigil contain armodafinil 150mg as the active ingredient. The principal difference is the manufacturer: Nuvigil is the branded version produced by Teva Pharmaceuticals and approved by the FDA, while Waklert is manufactured by Sun Pharmaceutical Industries. Generic equivalents contain the same active compound but may differ in inactive excipients such as binders, fillers, and coatings.

The most commonly reported adverse effects include headache, nausea, dizziness, dry mouth, and insomnia — particularly when taken too late in the day. Serious but rare reactions include hypersensitivity responses and severe dermatological conditions such as Stevens-Johnson Syndrome. Patients should consult their prescriber if side effects are persistent or severe.