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Anxiolytics and Sedatives
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Diazepam
Mechanism of action: Enhances the effect of neurotransmitter GABA. Common uses: Anxiety relief, muscle relaxation, anticonvulsant.
Lorazepam
Mechanism of action: Binds to GABA receptor complex and potentiates GABA effects. Common uses: Anxiety, pre-anesthetic, status epilepticus.
Alprazolam
Mechanism of action: Modulates GABA receptor complex function. Common uses: Generalized anxiety disorder, panic disorder.
Zolpidem
Mechanism of action: Agonist at benzodiazepine site of GABA-A receptors. Common uses: Short-term treatment of insomnia.
Buspirone
Mechanism of action: Partial agonist at serotonin 5-HT1A receptors. Common uses: Generalized anxiety disorder.
Clonazepam
Mechanism of action: Increases GABAergic activity. Common uses: Panic disorder, seizure disorders.
Temazepam
Mechanism of action: Potentiates GABA-A action. Common uses: Short-term management of insomnia.
Midazolam
Mechanism of action: Enhances GABA activity at the GABAA receptor. Common uses: Preoperative sedation, procedural sedation.
Triazolam
Mechanism of action: Enhances GABA-mediated synaptic inhibition. Common uses: Insomnia.
Flumazenil
Mechanism of action: Competitive antagonist at GABAA receptors. Common uses: Benzodiazepine overdose antidote.
Phenobarbital
Mechanism of action: Prolongs opening of GABAA chloride channels. Common uses: Sedative, anticonvulsant for epilepsy.
Pentobarbital
Mechanism of action: Modulates GABAA receptor; increases duration of chloride channel opening. Common uses: Sedative, pre-anesthetic.
Secobarbital
Mechanism of action: Potentiates GABA by increasing the duration of chloride channel opening. Common uses: Insomnia, preoperative medication.
Hydroxyzine
Mechanism of action: Antagonizes H1 histamine receptors. Common uses: Anxiolytic, sedative, and antiemetic.
Oxazepam
Mechanism of action: Enhances GABAA receptors. Common uses: Anxiety, alcohol withdrawal syndrome.
Chlordiazepoxide
Mechanism of action: Potentiates the effect of GABA at the GABA-A receptor. Common uses: Anxiety disorders, alcohol withdrawal.
Meprobamate
Mechanism of action: Unknown, may involve GABAergic mechanisms. Common uses: Short-term relief of anxiety.
Quazepam
Mechanism of action: Enhances GABA action through binding to the benzodiazepine site on the GABA-A receptor. Common uses: Insomnia.
Zopiclone
Mechanism of action: Acts on GABA-BZ receptor complex. Common uses: Short-term treatment of insomnia.
Melatonin
Mechanism of action: Agonist at melatonin receptors in the suprachiasmatic nucleus. Common uses: Sleep disorders, jet lag.
Eszopiclone
Mechanism of action: Acts on GABA-A receptor complex. Common uses: Insomnia with difficulty falling asleep or maintaining sleep.
Ramelteon
Mechanism of action: Selective agonist of melatonin MT1 and MT2 receptors. Common uses: Treatment of insomnia characterized by difficulty with sleep onset.
Suvorexant
Mechanism of action: Dual orexin receptor antagonist. Common uses: Insomnia, including difficulties with sleep onset and/or sleep maintenance.
Gabapentin
Mechanism of action: Binds to the alpha-2-delta subunit of voltage-gated calcium channels in CNS. Common uses: Neuropathic pain, partial seizures, postherpetic neuralgia.
Propranolol
Mechanism of action: Non-selective beta-adrenergic receptor blocker. Common uses: Performance anxiety, hypertension, tremor.
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