Sedative Hypnotics Flashcards
Enhance gaba to depress cns
Drug/dose relationship is linear
Duration limited by distribution
Sleepiness, drowsiness, confusion, sedation
Not antagonized by Flumazenil
Barbiturates
Available in different forms of administration
Pentobarbital, methohexinal, phenobarbital
Barbiturates
Enhance gaba
Keep rmp more negative
2 subtypes
Inhibited by Flumazenil
Metabolized by liver
Cns depression, drowsiness, dizzy, rebound insomnia, amnesia
Irritation and aggression in children
Benzodiazepines
Skip step two in liver metabolism?
Oxazepam and lorazepam
Eszopiclone
Zaleplon
Zolpidem
Non BZD- work at BZD receptor site and also antagonized by Flumazenil
Alprazolam Chlordiazepam Clonazapam Clorazepate Diazepam Lorazepam Oxazepam
BZD for anxiety
Estazolam Flutazepam Quazepam Temazepam Triazolam
BZD for insomnia
Buspirone
Anti anxiety, delayed onset, low serotonin release, drug interactions, short half life
-takes 2 weeks for full effect
Non BZD or barbiturate sedative hypnotic
Ramelteon
Insomnia
Affects sleep wake cycle
Next day impairment
Melatonin receptor agonist
Tasimelton
Non-24
Affects sleep wake cycle
Next day impairment
Melatonin receptor agonist
Highly lipid soluble Fast onset Termination due to redistribution Most metabolized by liver Duration of t1/2 varies Enhance GABA Two classes
Sleepiness, drowsiness, confusion, sedation
Risk of dependence varies
All sedative hypnotics
Suvorexant
Orexin receptor agonist Insomnia, next day impairment
Affects sleep/wake cycle
Decreases appetite
Non BZD or barbiturate sedative hypnotic