Lumateperone and Suvorexant interaction
Lumateperone and Suvorexant: both prescribing labels describe an interaction that usually calls for monitoring, a dose change, or spacing the doses.
Usually manageable with monitoring or a dose change. Tell your pharmacist you take both.
What the FDA labels say
From the Lumateperone (CAPLYTA) label · effective 2025-06-20
Strong CYP3A4 inhibitors: Recommended dosage is 10.5 mg once daily.
Moderate CYP3A4 inhibitors: Recommended dosage is 21 mg once daily.
Moderate or Strong CYP3A4 Inhibitors* Prevention or Management Reduce the CAPLYTA dosage when used concomitantly with moderate or strong CYP3A4 inhibitors [see Dosage and Administration ( 2.2 ) ].
Clinical Impact Concomitant use of CAPLYTA with moderate or strong CYP3A4 inhibitors increases lumateperone exposure [see Clinical Pharmacology ( 12.3 ) ] , which may increase the risk of adverse reactions.
…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 Suvorexant (BELSOMRA) label · effective 2025-03-10
CNS Depressant Effects and Daytime Impairment: Risk of impaired alertness and motor coordination, including impaired driving; risk increases with dose; caution patients taking 20 mg against next-day driving and other activities requiring complete mental alertness ( 5.1 ).
Prescribers should monitor for somnolence and CNS depressant effects, but impairment can occur in the absence of symptoms, and may not be reliably detected by ordinary clinical exam (i.e., less than formal testing of daytime wakefulness and/or psychomotor performance).
Co-administration with other CNS depressants (e.g., benzodiazepines, opioids, tricyclic antidepressants, alcohol) increases the risk of CNS depression.
Dosage adjustments of BELSOMRA and of concomitant CNS depressants may be necessary when administered together because of potentially additive effects.
The risk of next-day impairment, including impaired driving, is increased if BELSOMRA is taken with less than a full night of sleep remaining, if a higher than the recommended dose is taken, if co-administered with other CNS depressants, or if co-administered with other drugs that increase blood levels of BELSOMRA.
Taking more than these two? Interactions stack. Check your whole list at once; it stays in your browser.
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.