Doxylamine and Lorazepam interaction
Doxylamine and Lorazepam: 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 Doxylamine (nighttime sleep aid) label · effective 2026-04-15
…breathing problem such as emphysema or chronic bronchitis • glaucoma • trouble urinating due to an enlarged prostate gland Ask a doctor or pharmacist before use if you are taking • a sedative or any other sleep-aid • tranquilizers • any other antihistamines • any other drugs When using this product • avoid alcoholic beverages • do not drive a motor vehicle or operate…
From the Lorazepam (LOREEV XR) label · effective 2025-10-08
Caution patients receiving LOREEV XR against operating machinery or driving a motor vehicle as well to avoid the concomitant use of alcohol and other CNS depressant drugs during treatment ( 5.4 , 7 )
Use of benzodiazepines, including LOREEV XR, both used alone and in combination with other CNS depressants, may lead to potentially fatal respiratory depression.
Alcohol should be avoided and other CNS depressant drugs used with caution during treatment with LOREEV XR [see Drug Interactions ( 7 )] .
Use caution if LOREEV XR is co-administered with other CNS-depressants [see Warnings and Precautions (5.4)] .
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.