Carphenazine

19 interactions 2 explained in plain English
Dr. Brian Staiger, PharmD, BCPS
Medically reviewed by Dr. Brian Staiger, PharmD, BCPS · Updated Jul 4, 2026 · Editorial policy · Data sources

Sources: FDA prescribing information (Structured Product Labeling), the published literature cited in each entry, DDInter 2.0 (a major open-access drug-interaction database), and legacy DrugBank interaction data distributed by the NIH's RxNav service (decommissioned in 2024) — analyzed and reviewed by our pharmacist team. How we build this library →

Most serious with: Acetaminophen And Codeine Diazepam Rectal Butorphanol Injection Butorphanol Nasal Spray Morphine Injection Nalbuphine Injection
18 Major 1 Moderate
All (19) Major (18) Moderate (1)

Major

Carphenazine Acetaminophen And Codeine Capital® & Codeine Explained An increased risk of respiratory and CNS depression Details Carphenazine Buprenorphine Belbuca Explained An increased risk of respiratory depression and CNS depression Details Carphenazine Butorphanol Injection Butorphic Increased risk of respiratory and CNS depression Details Carphenazine Butorphanol Nasal Spray Stadol® NS Increased risk of respiratory and CNS depression Details Carphenazine Cetirizine Injection Aller-Tec Increased risk of CNS depression Details Carphenazine Cetirizine Ophthalmic Zerviate Increased risk of CNS depression Details Carphenazine Diazepam Nasal Spray Valtoco Increased risk of CNS depression Details Carphenazine Diazepam Rectal Diastat Increased risk of CNS depression Details Carphenazine Esketamine Nasal Spray Spravato Increased risk of sedation Details Carphenazine Fentanyl Transdermal Patch Duragesic® Increased risk of profound sedation, respiratory depression, hypotension, coma and death Details Carphenazine Hydromorphone Injection Dilaudid Increased risk of respiratory and CNS depression Details Carphenazine Hydromorphone Rectal available generically Increased risk of respiratory and CNS depression Details Carphenazine Lacosamide Injection Motpoly An increased risk of CNS depression Details Carphenazine Levodopa Oral Inhalation Inbrija An increased risk of CNS depression Details Carphenazine Metoclopramide Injection Gimoti Increased risk of CNS depression Details Carphenazine Metoclopramide Nasal Spray Gimoti Increased risk of CNS depression Details Carphenazine Morphine Injection Astramorph® PF Increased risk of profound sedation, respiratory depression, hypotension, coma and death Details Carphenazine Nalbuphine Injection Nubain® Increased risk of respiratory and CNS depression Details

Moderate

Carphenazine Clonidine Transdermal Patch Catapres An increased risk of sedation and somnolence Details

Check another drug

Still have questions about this combination?

Every question gets a real answer from a licensed pharmacist — free, and usually within a day.

Ask the pharmacist
Educational information only, not medical advice. Always confirm interactions with your pharmacist or prescriber before making any change to your medications.