Answer
Fluoxetine taken concomitantly with nortriptyline hydrochloride can cause greater than two-fold increases in previously stable nortriptyline plasma levels.
Sources for this answer
- Nortriptyline 50 mg Film-coated TabletsADVANZ Pharma · emc · SmPC §4.5 Interaction with other medicinal products · Version 8Document updated
Sources checked