Modes of action Flashcards
Mirtazapine
Antidepressant- Noradrenaline and serotonin specific antidepressant (NaSSa) 5HT2 antagonist, 5HT3 antagonist, H1 antagonist, alpha 1 and 2 antagonist, moderate muscarinic antagonist
Venlafaxine
Antidepressant-
Serotonin and noradrenaline reuptake inhibitor (SNRI)
Duloxetine
Antidepressant-
Serotonin and noradrenaline reuptake inhibitor (SNRI)
Roboxetine
Antidepressant-
Noradrenaline reuptake inhibitor (NaRI)
St John’s wort
Antidepressant-
Weak MAOI
Weak SNRI
(also considered to be a weak SSRI)
Trazodone
Antidepressant-
Serotonin antagonist and reuptake inhibitor (SARI)
Moclobemide
RIMA/MAOI Antidepressant-
Reversible inhibitor of monoamine oxidase type A
Agomelatine
Atypical Antidepressant- Melatonergic agonist (MT1 and MT2 receptors) and 5-HT2C antagonist
Bupropion (Zyban)
Antidepressant-
Norepinephrine and Dopamine reuptake inhibitor (NDRI) and nicotinic acetylcholine receptor antagonist
Donepezil
Antidementia-
Reversible anticholinesterase inhibitor
Rivastigmine
Antidementia-
Reversible anticholinesterase inhibitor and butyrylcholinesterase inhibitor
Galantamine
Antidementia-
Reversible acetylcholinesterase inhibitor and binds allosterically to nicotinic acetylcholinesterase inhibitor
Tacrine
Antidementia-
Reversible acetylcholinesterase inhibitor
Memantine
Antidementia-
Non-competitive NMDA antagonist
Valproate
Mood stabiliser-
GABA agonist and NMDA antagonist
Gabapentin
Mood stabiliser-
Mode of action unclear, known to bind to voltage activated calcium channels, unclear if this is how it exerts therapeutic effect
Topiramate
Mood stabiliser-
GABA agonist, NMDA antagonist and Na channel stabiliser
Carbamazepine
Mood stabiliser-
Stabilises Na channels
Phenytoin
Mood stabiliser-
stabilises Na channels
Lamotrigine
Mood stabiliser-
NMDA antagonist and stabilises Na channels
Pregabalin
Mood stabiliser-
Potent ligand for alpha-2-delta subunit of voltage-gated calcium channels
Diazepam
Benzodiazepine/ GABA-A agonist
Lorazepam
Benzodiazepine/ GABA-A agonist
Temazepam
Benzodiazepine/ GABA-A agonist
Clonazepam
Benzodiazepine/ GABA-A agonist
Midazolam
Benzodiazepine/ GABA-A agonist
Zolpidem
Z drug/ GABA-A agonist
Zopiclone
Z drug/ GABA-A agonist
Buspirone
anxiolytic / 5HT1A partial agonist
Ketamine
NMDA antagonist
Phencyclidine
Drug of abuse (PCP) NMDA antagonist
Lofexedine
Aids with opiate withdrawal / Alpha 2 agonist
Clonidine
ADHD tx, Aids with opiate withdrawal / Alpha 2 agonist
Buprenorphine
Aids with opiate withdrawal / Partial agonist of mu opioid receptor
Naloxone
Tx for opiate OD / Pure opioid antagonist
Atomoxetine
ADHD tx / Noradrenaline reuptake inhibitor
Varenicline
Nicotine withdrawal aid / Nicotonic receptor partial agonist
Disulfiram
Induces acute sensitivity to alcohol for tx of alcoholism
Binds to acetaldehyde dehydrogenase causing acetaldehyde to accumulate. This leads to flushing, severe headache, respiratory distress, nausea and vomiting
Acamprosate
treatment for alcoholism / metabotropic glutamate receptor antagonist and GABA-A agonist
Selegiline
Treatment for parkinsonianism and as an adjunct to co-beneldopa or co-careldopa to reduce end of dose deterioration / selective, irreversible inhibition of monoamine oxidase type B (also inhibits MAO-A at higher doses
Sildenafil
Erectile dysfunction / Inhibits cGMP-specific phosphodiesterase type 5 (PDE5)
Amisulpride
2/D3 selective antagonist (low affinity selective antagonist of ‘D2 like’ receptors (D2=D3>D4) it has little affinity for D1 like’ receptors (D1 and D5) or non dopaminergic receptors (serotonin, histamine, adrenergic, and cholinergic)
Olanzapine
Dopamine and 5HT2 antagonism
Aripiprazole
Partial agonist at 5HT1A and D2, and 5HT2A antagonist
Clozapine
High affinity for D4, (to a lesser extent D1, D2, D3, D5) also 5 HT 1A partial agonist and 5HT2 antagonist