Avoid combining Labetalol with other medications that lower blood pressure, such as other beta-blockers (e. g., metoprolol, atenolol), alpha-blockers (e. g., prazosin, terazosin), ACE inhibitors (e. g., lisinopril, ramipril), angiotensin receptor blockers (ARBs) (e. g., losartan, valsartan), and diuretics (e. g., furosemide, hydrochlorothiazide). This combination can cause dangerously low blood pressure.
Specific Medication Interactions
Combining Labetalol with certain antidepressants, particularly tricyclic antidepressants (TCAs) and monoamine oxidase inhibitors (MAOIs), may increase the risk of hypotension and bradycardia. Also, concurrent use with calcium channel blockers (e. g., diltiazem, verapamil) can significantly enhance hypotensive effects. Caution is advised when using Labetalol with antiarrhythmic drugs, particularly those that prolong the QT interval, due to potential additive effects on heart rate and rhythm.
Always inform your doctor or pharmacist of all medications, including over-the-counter drugs and herbal supplements, you are taking before starting Labetalol. This allows for a thorough assessment of potential drug interactions and prevents adverse effects.
