Insulin lispro and Insulin regular (human) interaction
Insulin lispro and Insulin regular (human): 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 Insulin lispro (LYUMJEV) label · effective 2026-06-16
To avoid medication errors between LYUMJEV and other insulins, instruct patients to always check the insulin label before each injection.
From the Insulin regular (human) (AFREZZA) label · effective 2026-05-30
Switching from another insulin to AFREZZA [see Dosage and Administration ( 2.3 ) and Warnings and Precautions ( 5.2 )]
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.