antidepressants Flashcards
symptom dimensions of Major depressive episodes
DSM-5 Diagnostic Criteria – Major Depressive Episode (MDD)
Diagnostic Criteria – MDD
* symptoms cause?
* not attributable to?
* not better explained by?
* has never been?
- symptoms cause clinically significant distress or impairment in social, occupational, or other important areas of functioning
- not attributable to the physiological effects of a substance or another medical
condition - not better explained by another psychiatric illness
- has never been a manic episode or a hypomanic episode
Monoamine Hypothesis of Depression
- Depression due to deficiency of monoamine neurotransmitters (NT)
– norepinephrine
– serotonin
- Evidence of monoamine hypothesis
– Depletion of NT induces depression
– Antidepressants increase levels of NT
– Onset of antidepressant activity (decrease in depressive symptoms) is correlated with down-regulation of receptors
Heterocyclic Tertiary Amines (TCA)
Amitriptyline (Elavil)
Imipramine (Tofranil)
Doxepin (Sinequan)
Heterocyclic Tertiary Amines (TCA) moa
Mixed NE and 5HT reuptake inhibition
Amitriptyline (Elavil)
moa and dosage
Mixed NE and 5HT reuptake inhibition
50-300 mg
Imipramine (Tofranil)
moa
Mixed NE and 5HT reuptake inhibition
tertiary TCA
Doxepin (Sinequan)
moa and dosage
Mixed NE and 5HT reuptake inhibition
50-300 mg
Heterocyclic Secondary Amines (TCA)
Nortriptyline (Pamelor)
Desipramine (Norpramin)
Heterocyclic Secondary Amines (TCA) moa
NE>5HT reuptake inhibition
Nortriptyline (Pamelor) moa
NE>5HT reuptake inhibition
Desipramine (Norpramin) moa
NE>5HT reuptake inhibition
Selective Serotonin Reuptake Inhibitors (SSRI)
Fluoxetine (Prozac)
Sertraline (Zoloft)
Paroxetine (Paxil, Paxil CR, Pexeva)
Fluvoxamine (Luvox, Luvox CR)
Citalopram (Celexa)
Escitalopram (Lexapro)
SSRI moa
5HT»>NE reuptake inhibition
Fluoxetine (Prozac)
moa and dosage
5HT»>NE reuptake inhibition
10-80 mg
Sertraline (Zoloft)
moa and dosage
5HT»>NE reuptake inhibition
50-200 mg
Paroxetine (Paxil, Paxil CR, Pexeva)
moa and dosage
5HT»>NE reuptake inhibition
10-40 mg
Fluvoxamine (Luvox, Luvox CR)
moa and dosage
5HT»>NE reuptake inhibition
50-300 mg
Citalopram (Celexa)
moa and dosage
5HT»>NE reuptake inhibition
20-40 mg
Escitalopram (Lexapro)
moa and dosage
5HT»>NE reuptake inhibition
10-20 mg
Serotonin Norepinephrine Reuptake Inhibitors (SNRI)
Venlafaxine (Effexor)
Desvenlafaxine (Pristiq, Khedezla)
Duloxetine (Cymbalta)
Levomilnacipran (Fetzima)
SNRI moa
mixed based on the agents
Venlafaxine (Effexor)
moa
5HT >NE»DA reuptake inhibition
Desvenlafaxine
moa
5HT=NE reuptake inhibition
Duloxetine (Cymbalta)
moa
5HT=NE reuptake inhibition
Levomilnacipran (Fetzima)
moa
NE>5HT reuptake inhibition
SNRI
Monoamine Oxidase Inhibitors (MAOI)
Phenelzine (Nardil)
Tranylcypromine (Parnate)
Selegiline Transdermal patch (EMSAM)
MAOI moa
Nonselective MAO A and B inhibition
Phenelzine (Nardil)
moa and dose
Nonselective MAO A and B inhibition
15-90 mg
10-60 mg
Tranylcypromine moa
Nonselective MAO A and B inhibition
Selegiline Transdermal patch
(EMSAM) moa and dose
Selective MAO B inhibition
Nonselective MAO A and B inhibition
6 mg/24hrs
9 mg/24hrs
12 mg/24hrs
Atypical Antidepressants
Bupropion (Wellbutrin, Forfivo)
Mirtazapine (Remeron)
Trazodone
Nefazodone (Serzone)
Vilazodone (Viibryd)
Vortioxetine (Trintellix)
Bupropion (Wellbutrin, Forfivo) moa
NE and DA reuptake inhibition
Mirtazapine (Remeron) moa
Alpha2-NE
5HT2 presynaptic antagonist
5HT2/3 postsynaptic antagonist
Trazodone moa
5HT2 antagonist / Selective 5HT reuptake
inhibitor
Nefazodone (Serzone) moa
5HT2 antagonist / Selective 5HT reuptake
inhibitor
Vilazodone (Viibryd) moa
Selective 5HT reuptake inhibitor/partial 5HT1A agonist
Vortioxetine (Trintellix) moa
5HT3/1D/7 antagonist
5HT1B partial agonist
5HT1A agonist
Novel Antidepressants
Esketamine (Spravato)
Brexanolone (Zulresso
Esketamine (Spravato) moa
Non-selective, noncompetitive
antagonist of the N-methyl-D-aspartate (NMDA)
receptor
Brexanolone (Zulresso) moa
Positive allosteric modulation of GABAA
receptors
Common oral side effects of antidepressants
– Xerostomia (96%)
– Dysguesia (65%
less common oral side effects of antidepressants
- Hypersalivation,
- stomatitis,
- dysphagia,
- bruxism,
- glossiitis,
- tardive dyskinesia,
- hairy tongue,
- salivary gland enlargement,
- tongue edema,
- gingivitis,
- halitosis,
- ulcers,
- jaw stiffness,
- candidiasis,
- sinusitis,
- erythema multiforme,
- Steven-Johnson syndrome,
- gumline erosion,
- periodontal disease, tooth disease
Monoamine Oxidase Inhibitors
(MAO-I) drug and food interactions
– hypertensive crisis
– serotonin syndrome
NE increaed with MAOI and can be further increaed thru tyramine in diet
Common Side Effects of MAO-I:
* oral?
* GI
* head?
* other side effects
* od?
- Dry mouth
- Nausea, diarrhea or constipation
- Headache
- Drowsiness or Insomnia
- Dizziness or lightheadedness
- Weight gain
- Sexual dysfunction
- Significant morbidity and mortality associated with overdose
Hypertensive Crisis
- Defined by diastolic blood pressure > 120 mmHg
- Potentially fatal reaction characterized by:
– Occipital headache – may radiate frontally
– Palpitation
– Neck stiffness or soreness
– Nausea and/or vomiting
– Sweating
– Dilated pupils, photophobia
– Tachycardia or bradycardia
– Chest pain
Suggested Tyramine Dietary
Modifications for MAO-I
* Foods to AVOID
– Dried, aged, smoked, fermented, spoiled, or improperly stored meat, poultry and fish
– Broad bean pods
– Aged cheeses
– Tap and nonpasteurized beers
– Marmite, sauerkraut
– Soy products/tofu
Suggested Tyramine Dietary Modifications for MAO-I
* Foods ALLOWED
– Fresh or processed meat, poultry and fish
– All other vegetables
– Processed and cottage cheese, ricotta cheese, yogurt
– Canned or bottled beers and alcohol
– Brewer’s and baker’s yeast
what common rx should be avoided with MAOI? what is the protocol?
Hypertensive Crisis – Drug Interactions to AVOID with MAOI
cold meds are big cause
decongestants causing HTN crisis with MAOi
– phenylephrine
– ephedrine
– pseudoephedrine
– oxymetazoline
stims causing HTN crisis with MAOi
– amphetamines
– methylphenidate
AD’s causing HTN crisis with MAOis
- Antidepressants with NRI activity
– TCA
– SNRI (venlafaxine, desvenlafaxine, duloxetine)
– bupropion, mirtazapine
appetite Rx causing HTN crisis with MOAi
- Appetite suppressants with NRI activity
– phentermine
Serotonin Syndrome
- Addition or increase of known serotonergic agent to an established medication regimen
- Other etiologies (infectious, metabolic, substance abuse or withdrawal) have ruled out.
- Antipsychotic has not been started or increased prior to the onset of sign/symptoms
SS signs and symptoms
Three of more of the following symptoms:
– Agitation
– Diaphoresis
– Diarrhea
– Fever
– Hyperreflexia
– Incoordination
– Mental status changes (confusion, hypomania)
– Myoclonus
– Shivering
– Tremor
Serotonin Syndrome – Drug Interactions to AVOID with MAOI
tramadol and dextromethorphan increase 5HT
AD’s associated with SS and MAOi’s
– SSRI
– TCA (clomipramine)
– SNRI
– Mirtazapine
other TCA structure rx associated with SS and MAOi
– Cyclobenzaprine
– Carbamazepine
pain meds that can cause SS when used with maoi
– Meperidine
– Tramadol ✔
– Methadone
– Propoxyphene
– Fentanyl