3MB Drugs Flashcards
SSRI mechanism
Selective Serotonin Reuptake Inhibitor
Selectively inhibit reuptake of serotonin (5HT) from the synaptic cleft
MAOI mechanism
Monoamine oxidase inhibitors.
Irreversible or reversible inhibitors of MAO-A and MAO-B
Tricyclic Antidepressants (TCAs) mechanism of action
Block reuptake of monoamines into presynaptic terminals
mainly noradrenaline and 5HT.
SNRIs mechanism
Serotonin & Norepinephrine Reuptake Inhibitors
Block the reuptake of monoamines (noradrenaline and serotonin, or 5HT) into presynaptic terminals
Fewer side effects than tricyclics.
Lithium mechanism
Used in
Inhibit glycogen synthase kinase 3beta
block phosphatidylinositol pathway
Used in bipolar affective disorder (reduce mood in episodes of mania, raises mood in depression)
Drug classes used for anxiety
Benzodiazepines
SSRIs
Tricyclics
Pregabalin
What are the two classes of antipsychotics?
Typical (1st generation)
Atypical (2nd generation)
Which class of antipsychotics are more likely to induce extra pyramidal side effects?
Typical (1st gen)
List some extra pyramidal side effects (EPSE)
Acute dystonic redaction
Parkinsonism
Akathisia
Tardive dyskinesia
What is acute dystonic reaction
What can it be treated with?
Painful, non voluntary muscle spasms
Occurs early on in antipsychotic treatment.
Acetylcholine antagonists
Parkinsonism
Tremor, rigidity, slowness of gait
Takes days-months to develop
anticholinergics help
Akithisia
Internal restlessness. Fidgeting, wriggling, pacing, walking on the spot.
Constantly feel the need to move.
Tardive dyskinesia
Repetitive involuntary purposeless movements
grimacing, sticking tongue out, lip smacking, blinking
Takes years to develop.
Prochlorperazine, Procyclidine and Orphenadrine are examples of what?
Acetylcholine antagonists.
Which receptor do typical (1st gen) antipsychotics target?
D2 inhibition
dopamine