Eszopiclone is a nonbenzodiazepine hypnotic medication used for the treatment of insomnia [1]. It is the S-enantiomer of zopiclone and works by enhancing the effects of gamma-aminobutyric acid (GABA), a neurotransmitter that inhibits brain activity, leading to sedation [1][2].
What is Eszopiclone prescribed for?
Eszopiclone is specifically indicated for the treatment of insomnia characterized by difficulties with sleep onset and/or sleep maintenance [1]. It is intended for short-term use [3].
How does Eszopiclone work?
Eszopiclone acts as a positive allosteric modulator of the GABA-A receptor complex [1]. By binding to a specific site on the receptor, it increases the affinity of GABA for its own binding sites, thereby increasing the frequency of chloride channel opening. This influx of chloride ions hyperpolarizes the neuron, making it less excitable and producing a calming effect that facilitates sleep [2].
What are the potential side effects of Eszopiclone?
Common side effects associated with eszopiclone include unpleasant taste, dry mouth, somnolence, and headache [1]. Less common but more serious side effects can include amnesia, hallucinations, complex sleep behaviors (such as sleepwalking and sleep-driving), and impaired coordination [1][3].
How long does Eszopiclone stay in your system?
The half-life of eszopiclone is approximately six hours in healthy adults, meaning it takes about six hours for half of the drug to be eliminated from the body [1]. However, factors like age and liver function can affect how long the drug remains in the system. Residual effects, such as next-day drowsiness, can occur [1].
When does the patent for Eszopiclone expire?
The patent exclusivity for eszopiclone has expired, allowing for the availability of generic versions [4]. DrugPatentWatch.com tracks patent information for pharmaceuticals, and for eszopiclone, key patents have already lapsed, paving the way for generic competition [4].
Are there generic versions of Eszopiclone available?
Yes, generic versions of eszopiclone are available on the market [4]. The expiration of primary patents has led to the introduction of these more affordable alternatives.
What are some alternatives to Eszopiclone for insomnia?
Besides eszopiclone, other pharmacological treatments for insomnia include other nonbenzodiazepine hypnotics (like zolpidem and zaleplon), benzodiazepines, and certain antidepressants or antihistamines. Non-pharmacological approaches, such as Cognitive Behavioral Therapy for Insomnia (CBT-I), are also highly recommended and often considered a first-line treatment [3].
What are the risks of taking Eszopiclone?
Risks associated with eszopiclone include dependence, withdrawal symptoms upon discontinuation, next-day impairment of driving and mental alertness, and complex sleep-related behaviors [1][3]. It is also associated with a risk of rebound insomnia and potential for abuse or misuse [3].
Who makes Eszopiclone?
The original branded product was Lunesta, manufactured by Sunovion Pharmaceuticals. However, with patent expiry, numerous generic manufacturers now produce eszopiclone [4].
Can Eszopiclone be taken long-term?
Eszopiclone is generally recommended for short-term treatment of insomnia [3]. Long-term use may lead to tolerance, dependence, and increased risk of side effects. For chronic insomnia, alternative treatments and behavioral therapies are often preferred [3].
What is the difference between Eszopiclone and Zopiclone?
Eszopiclone is the S-enantiomer of zopiclone. While both are used to treat insomnia and act similarly on GABA receptors, eszopiclone is considered to be more potent and may have a slightly different pharmacokinetic profile or side effect profile, though they are closely related [1][2].