Lumateperone and Phenobarbital interaction
Lumateperone and Phenobarbital: both prescribing labels flag this combination with the strongest language, such as a contraindication, a boxed warning, or an instruction to avoid it.
Do not combine without a prescriber's guidance. The label language below is the strongest FDA uses.
What the FDA labels say
From the Lumateperone (CAPLYTA) label · effective 2025-06-20
CYP3A4 inducers: Avoid concomitant use with CAPLYTA.
Table 6: Clinically Important Drug Interactions with CAPLYTA CYP3A4 Inducers* Prevention or Management Avoid concomitant use of CAPLYTA with CYP3A4 inducers .
Clinical Impact Concomitant use of CAPLYTA with CYP3A4 inducers decreases the exposure of lumateperone [see Clinical Pharmacology ( 12.3 ) ].
…interactions with adjunctive SSRI/SNRIs in MDD were observed in CAPLYTA clinical trials, CAPLYTA’s moderate serotonin transporter (SERT) activity may increase the risk of SRI-associated adverse reactions (e.g., serotonin syndrome, hyponatremia). * See www.fda.gov/CYPandTransporterInteractingDrugs for examples of CYP3A4 Inducers and Moderate or Strong CYP3A4 Inhibitors
From the Phenobarbital (SEZABY) label · effective 2025-12-23
CNS depressants: Closely monitor for sedation and respiratory depression.
CNS Depressants Closely monitor for signs of sedation and respiratory depression with concomitant use of SEZABY with other CNS depressants, including opioids [see Warnings and Precautions (5.1)] .
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Open in the checkerNot medical advice. Interaction Checker quotes FDA label text and NIH fact sheets. Whether an interaction matters for you depends on doses, timing, kidney and liver function, and other conditions. Confirm with a pharmacist or prescriber.