Drug group - Antidepressant Flashcards
1
Q
Antidepressant drug types
A
- Tricyclic antidepressants
- Monoamine oxidase inhibitors
- Selective serotinin reuptake inhibitors
- Noradrenaline reuptake inhibitors
- Serotonin and noradrenaline reuptake inhibitors
- Serotonin antagonists an reuptake inhibitors (SARIs)
2
Q
Tricyclic antidepressant - drug names
A
- Amitryptiline - more sedative
- Lofepramine - less anticholinergic
- Clomipramine - only effective OCD drug
3
Q
Tricyclic antidepressant - mechanism of action
A
- Block serotonin transporters (SERT) and noradrenaline transporters (NET) to inhibit reuptake of 5-HT (serotonin) and NA (noradrenaline)
- increase extracellular levels and enhance neurotransmission
- Antagonise - M1-muscarinic receptor/H1-histaminergic/alpha 1 adrenergic receptors which causes side effects
4
Q
Tricyclic antidepressant - indication
A
- Depression - 2nd line
- particularly useful when sedation required - Panic disorder - 2nd line
- OCD - 2nd line
5
Q
Tricyclic antidepressant - contraindic
A
- MI/arrythmias
- severe Liver disease
- Acute porphyria
- manic phase of bipolar
6
Q
Tricyclic antidepressant - side effects
A
- muscarinic M1 receptor antagonist - anticholinergic effects
- dry mouth/blurred vision/constipation/impotence - histaminergic H1 - antihistamine effects e.g. sedation + weight gain
- Alpha 1 - adrenergic - antisympathetic e.g. postural hypotension
7
Q
MAOIs - mechanism of action
A
- inhibit monoamine oxidase to prevent the breakdown of amine neurotransmitters such as;
- 5-HT, NA, melatonin
8
Q
MAOIs - drug names
A
- Phenelzine - irreversible inhibitor
2. Moclobemide - reversible inhibitors/ fewer side effects
9
Q
MAOIs - indications
A
- Depression - 2nd line
- Panic disorder - 3rd line
- Phobic disorder - 3rd line
- OCD - 3rd line
10
Q
MAOIs - contraindic
A
- use of TCA or SSRI
- pheochromocytoma
- Manic phase of bipolar disorder
11
Q
MAOIs- side effect
A
- postural hypotension/ dizziness
- Serotonin syndrome - interaction with TCA and SSRIs cause increase in serotonin + hypertensive crisis
- irreversible inhibitors prevent breakdown of dietary amines (tyramine) found in aged cheese
- > hypertensive crisis
12
Q
SSRI - drug names
A
- Fluroxetine
- Citalopram
- Setraline
13
Q
SSRI - mechanism
A
- selectively inhibits presynaptic reuptake of 5-HT into neurones
- increases the amount of 5-HT neurotransmitter available for transmission
14
Q
SSRI - indication
A
- Depression - 1st line
- GAD - 1st line
- Panic disorder - 1st line
- Phobic disorder - 1st line
15
Q
SSRI contraindic
A
- Cardiovascular disease
- Diabetes mellitus
- Manic phase of bipolar
- Epilepsy
- Glucoma