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Modafinil is a “smart drug” [1], with the FDA approving its use for narcolepsy treatment in 1998. In 2004, its range of approved uses was extended to obstructive sleep apnea and sleeping problems caused by shift work. [2].

Benefits and Effects

Modafinil was developed as an anti-narcolepsy drug to help with various sleep disorders. [21] [22]

Promotes wakefulness and alertness

Modafinil may improve alertness in shift workers [3]. Modafinil decreased sleepiness significantly and improved the CGI rating in 33 patients across 3 different sleep centers over a period of 3 years. The number of daytime naps and the duration of sleepiness during the day also reduced sharply. [4]

May improve memory retention, learning and driving performance.

A research team found that Modafinil may enhance attention, executive functions and learning [5]. Modafinil has been tested on the driving performance of patients with sleep disorders, and may improve driving performance in patients suffering from sleep disorders [6]

May be effective to treat ADHD

Modafinil was found to be as effective as methylphenidate, while offering equivalent performance to dexamphetamine in adult ADHD treatment [7]. Modafinil, in children and adolescents, showed improvements in ADHD symptoms and behaviors as observed by parents, teachers and investigators. [8]

Augmenting antidepressant treatment

Modafinil caused a significant reduction, and augmentation, in fatigue and a full or partial remission in patient depression. [9]

May suppress appetite and reduce cocaine addiction

Modafinil affects the dopamine neurotransmitter, affecting the reward centers of the brain involved in appetite [10]. Modafinil patients are more likely to decrease cocaine self-administration. More research is required to determine the effectiveness of Modafinil to combat cocaine addiction [11].

How Modafinil works

Researchers using functional magnetic resonance (fMRI) brain imaging highlighted changes in the brain from Modafinil [12]. Modafinil might also increase histamine production and other neurotransmitters that may contribute to wakefulness [13].

Modafinil may work through the release of glutamate in the hypothalamus. [14]. Research shows that Modafinil has a more focused effect on neurotransmitters in the brain [15] [16].


A typical prescribed dosage of Modafinil for narcolepsy is a single, 200mg tablet to be taken in the morning [17]. Two separate doses of 200 mg could significantly improve evening wakefulness. Patients should start with low Modafinil doses [18].

Modafinil with food delays its impact on peak concentration by two to four hours, yet doesn’t impact it bioavailability. Modafinil’s elimination half-life is about 15 hours. [19]

Side Effects

Patients taking Modafinil have experienced mild side effects: headaches, dizziness and nausea [19] [3]. Reports show that only 1% of Modafinil patients complain of side effects [2]. Modafinil can cause a serious rash in patients, including Stevens-Johnson syndrome.

Most cases of Modafinil-induced rashes occurred within 1 to 5 weeks of the start of treatment – isolated cases have been longer. Modafinil dosage should be stopped and medical prognosis sought if a rash appears [20].

Additional information

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Show more Show less10. hsdb:@term @rn 68693-11-821. Muhammad Umer Ahmed, Omer Ahmed, Sanaullah Khan, Muhammad Yasir Baloch, Muhammad Mustafa Ahmed and Khurram Anis, 2018. Narcolepsy: A review amongst sleep disorders. Global Medicine and Therapeutics, vol. 1 (4).
22. GEERT MAYER, HEIKE BENES, PETER YOUNG, MARION BITTERLICH and ANDREA RODENBECK, 2015. Modafinil in the treatment of idiopathic hypersomnia without long sleep time—a randomized, double-blind, placebo-controlled study. European Sleep Research Society: DOI: 10.1111/jsr.12201.
Also known as:Provigil, Alertec, Modavigil, Modalert, Armodafinil
Good for: , , , , , , , ,
Stacks well with: Citicoline
Typical dose:100 - 200 mg
Half Life :15 Hours