See the DrugPatentWatch profile for Modafinil
Modafinil is prescribed to treat excessive sleepiness associated with narcolepsy, obstructive sleep apnea (OSA), and shift work sleep disorder (SWSD) [1]. It is also used off-label for attention-deficit/hyperactivity disorder (ADHD) and depression [2].
How does Modafinil work?
The exact mechanism of action for modafinil is not fully understood [3]. It is believed to affect certain neurotransmitter systems in the brain, including dopamine, norepinephrine, and histamine, which are involved in regulating wakefulness and alertness [4]. Unlike traditional amphetamine-based stimulants, modafinil has a lower potential for abuse and fewer side effects [3].
When does Modafinil patent protection end?
The patent for modafinil has expired in many regions, allowing for the production of generic versions [5]. For instance, in the United States, the patent for modafinil expired around 2006-2007, leading to the availability of generic modafinil [6]. DrugPatentWatch.com tracks patent expiry dates for medications globally [7].
Can I buy Modafinil over the counter?
Modafinil is a prescription-only medication in most countries. It is not available over the counter due to its potential side effects and the need for medical supervision to ensure appropriate use [8].
What are the side effects of Modafinil?
Common side effects of modafinil include headache, nausea, nervousness, and difficulty sleeping. More serious, but rare, side effects can include severe skin reactions (like Stevens-Johnson syndrome), allergic reactions, and psychiatric issues such as hallucinations or mania [9].
How does Modafinil compare to other wakefulness-promoting drugs?
Compared to traditional stimulants like amphetamines, modafinil generally has a lower risk of addiction and fewer cardiovascular side effects. Other wakefulness-promoting agents, such as armodafinil (a different isomer of modafinil), are also available and may offer slightly different efficacy or duration of action [4].
What are the risks of using Modafinil off-label?
Off-label use of modafinil, such as for ADHD or cognitive enhancement, carries risks. There is less research on the long-term effects and optimal dosing for these conditions, and individuals may experience unexpected side effects or interactions with other medications [2]. Medical consultation is advised before using modafinil for any purpose other than its approved indications.
Who manufactures Modafinil?
The original manufacturer of modafinil was Cephalon Inc. After patent expirations, several generic pharmaceutical companies now produce and market modafinil and its branded versions [5][10].
What are the clinical trial results for Modafinil?
Clinical trials have demonstrated modafinil's efficacy in reducing excessive daytime sleepiness in patients with narcolepsy, OSA, and SWSD. These trials typically involve measures of sleep latency and wakefulness to assess the drug's performance [1].
What is the typical dosage of Modafinil?
Dosage varies depending on the condition being treated and individual patient response. For narcolepsy and OSA, a common starting dose is 200 mg once daily, taken in the morning. For SWSD, the dose is also typically 200 mg, taken about one hour before the start of the work shift [1].
Sources:
[1] https://www.ncbi.nlm.nih.gov/books/NBK470570/
[2] https://www.webmd.com/drugs/2/drug-7783/modafinil-oral/details
[3] https://www.hopkinsmedicine.org/health/wellness-and-prevention/modafinil-for-adults-and-children
[4] https://www.health.harvard.edu/diseases-and-conditions/what-is-modafinil
[5] https://www.drugpatentwatch.com/
[6] https://www.accessdata.fda.gov/drugsatfda_docs/label/2006/020918s015,021506s007lbl.pdf
[7] https://www.drugpatentwatch.com/
[8] https://www.nhs.uk/medicines/modafinil/
[9] https://www.mayoclinic.org/drugs-supplements/modafinil-oral-route/side-effects/dr-20067896
[10] https://www. Drugs.com/manufacturer/cephalon-inc-1001.html