Lidocaine and epinephrine and Metoprolol and hydrochlorothiazide interaction
Lidocaine and epinephrine and Metoprolol and hydrochlorothiazide: 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 Lidocaine and epinephrine (Flavalta) label · effective 2026-03-31
Risk of Hypertension and Bradycardia Due to Drug Interactions Between FLAVALTA and Nonselective Beta-Adrenergic Antagonists Administration of FLAVALTA (containing a vasoconstrictor, epinephrine) in patients receiving nonselective beta-adrenergic antagonists may cause severe hypertension and bradycardia.
Nonselective Beta-Adrenergic Antagonists Administration of FLAVALTA solution (containing a vasoconstrictor, epinephrine), in patients receiving a nonselective beta-adrenergic antagonist may result in dose-dependent hypertension and bradycardia with possible heart block.
Nonselective Beta-Adrenergic Antagonists: Administration of FLAVALTA (containing a vasoconstrictor, epinephrine), in patients receiving nonselective beta-adrenergic antagonist may cause severe hypertension and bradycardia.
From the Metoprolol and hydrochlorothiazide (METOPROLOL TARTRATE AND HYDROCHLOROTHIAZIDE) label · effective 2025-01-22
Patients may be unresponsive to the usual doses of epinephrine used to treat allergic reaction.
Anaphylactic Reaction While taking beta-blockers, patients with a history of severe anaphylactic reactions to a variety of allergens may be more reactive to repeated challenge and may be unresponsive to the usual doses of epinephrine used to treat an allergic reaction.
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.