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Citalopram

From Pharmacopedia
Revision as of 03:30, 14 May 2026 by MDElliottMD (talk | contribs) (Pharmacopedia: add <pharmaInteractions/>)
SSRI, Antidepressant
Citalopram
Celexa

Experience

👥 No personal reports yet
1 provider report · avg efficacy 40.0/100 · avg side-effect burden 40.0/100 · 10 patients managed total

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Problems

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Titration strategies

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Effects

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Interactions

Pharmacogenomic + mechanism interactions7 edges
Pharmacogenomic guideline recommendationsCPIC and Dutch Pharmacogenetics Working Group clinical guidelines
Phenotype:CYP2C19 ultrarapid metabolizer prefer alternative CPIC A 80 / 100
CPIC rec 8093618 [Strong]: Consider a clinically appropriate alternative antidepressant not predominantly metabolized by CYP2C19. If citalopram or escitalopram are clinically appropriate, and adequate efficacy is not achieved at standard maintenance dosing, consider titrating to a higher maintenance dose. CPIC pair-level A (CYP2D6, CYP2C19, CYP2B6, SLC6A4, HTR2A and Serotonin Reuptake Inhibitor Antidepressants) [PMID 25974703, 37032427] FDA labeling (Dosage and Administration, Warnings, Clinical Pharmacology)
Phenotype:cyp2c19 lpm dose reduce 50 CPIC A 80 / 100
CPIC rec 8093623 [Strong]: Consider a clinically appropriate antidepressant not predominantly metabolized by CYP2C19. If citalopram or escitalopram are clinically appropriate, consider a lower starting dose, slower titration schedule and 50% reduction of the standard maintenance dose as compared to normal metabolizers. CPIC pair-level A (CYP2D6, CYP2C19, CYP2B6, SLC6A4, HTR2A and Serotonin Reuptake Inhibitor Antidepressants) [PMID 25974703, 37032427] FDA labeling (Dosage and Administration, Warnings, Clinical Pharmacology)
Phenotype:CYP2C19 poor metabolizer dose reduce 50 CPIC A 80 / 100
CPIC rec 8093624 [Strong]: Consider a clinically appropriate antidepressant not predominantly metabolized by CYP2C19. If citalopram or escitalopram are clinically appropriate, consider a lower starting dose, slower titration schedule and 50% reduction of the standard maintenance dose as compared to normal metabolizers. CPIC pair-level A (CYP2D6, CYP2C19, CYP2B6, SLC6A4, HTR2A and Serotonin Reuptake Inhibitor Antidepressants) [PMID 25974703, 37032427] FDA labeling (Dosage and Administration, Warnings, Clinical Pharmacology)
Phenotype:CYP2C19 normal metabolizer monitor CPIC A 70 / 100
CPIC rec 8093620 [Strong]: Initiate therapy with recommended starting dose CPIC pair-level A (CYP2D6, CYP2C19, CYP2B6, SLC6A4, HTR2A and Serotonin Reuptake Inhibitor Antidepressants) [PMID 25974703, 37032427]
Phenotype:cyp2c19 lim monitor CPIC A 45 / 100
CPIC rec 8093621 [Moderate]: Initiate therapy with recommended starting dose. Consider a slower titration schedule and lower maintenance dose than normal metabolizers. CPIC pair-level A (CYP2D6, CYP2C19, CYP2B6, SLC6A4, HTR2A and Serotonin Reuptake Inhibitor Antidepressants) [PMID 25974703, 37032427]
Phenotype:CYP2C19 intermediate metabolizer monitor CPIC A 45 / 100
CPIC rec 8093622 [Moderate]: Initiate therapy with recommended starting dose. Consider a slower titration schedule and lower maintenance dose than normal metabolizers. CPIC pair-level A (CYP2D6, CYP2C19, CYP2B6, SLC6A4, HTR2A and Serotonin Reuptake Inhibitor Antidepressants) [PMID 25974703, 37032427]
Phenotype:CYP2C19 rapid metabolizer prefer alternative CPIC A 30 / 100
CPIC rec 8093619 [Optional]: Initiate therapy with recommended starting dose. If patient does not adequately respond to recommended maintenance dosing, consider titrating to a higher maintenance dose or switching to a clinically appropriate alternative antidepressant not predominantly metabolized by CYP2C19. CPIC pair-level A (CYP2D6, CYP2C19, CYP2B6, SLC6A4, HTR2A and Serotonin Reuptake Inhibitor Antidepressants) [PMID 25974703, 37032427] FDA labeling (Dosage and Administration, Warnings, Clinical Pharmacology)

Patient experience

Fluoxetine via Category:Antidepressants👤 exp n/a/5 outcome n/a (n=1)⚕️ exp 1.0/5 outcome +33.0 (n=1)

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Relevant Literature

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Summary
Classes
SSRI, Antidepressant
Common uses
Pharmacy
Pharmacology
Purported mechanism
Selective serotonin reuptake inhibitor