Answer
Paroxetine is contraindicated with pimozide because it can increase pimozide levels, and pimozide has a narrow therapeutic index and a known ability to prolong the QT interval.
Sources for this answer
- Paroxetine 20mg TabletsAurobindo Pharma - Milpharm Ltd. · emc · SmPC §4.5 Interaction with other medicinal products · Version 19Document updated
Sources checked