Drug Interactions between apomorphine and hydrochlorothiazide / telmisartan

MONITOR CLOSELY: Apomorphine may potentiate the hypotensive effect of vasodilators and antihypertensive agents. Apomorphine alone has been associated with orthostatic hypotension, hypotension, syncope, and dose-dependent decreases in systolic and diastolic blood pressure. In clinical studies of the subcutaneous formulation of apomorphine in patients with advanced Parkinson's disease, hypotension (10% vs 4%), myocardial infarction (3% vs. 1%), serious pneumonia (5% vs. 3%), serious falls (9% vs. 3%), and bone and joint injuries (6% vs. 2%) were experienced more commonly in patients receiving concomitant antihypertensive medications or vasodilators (n=94) compared to those not receiving these medications (n=456). Some of these events may be related to the increased incidence of hypotension.

MANAGEMENT: Caution and close monitoring for altered efficacy and safety are recommended if patients receive apomorphine with an antihypertensive agent or vasodilator. Some authorities consider the combination of subcutaneous apomorphine with antihypertensive medications or vasodilators to be contraindicated due to a lack of data from studies that systematically evaluated the potential interaction between apomorphine and these agents. Patients should be made aware of the possible side effects (e.g., dizziness, lightheadedness, orthostasis) and be cautioned about driving, operating machinery, or performing other hazardous tasks. They should also be advised to avoid rising abruptly from a sitting or recumbent position and to contact their physician if they experience symptoms of hypotension such as dizziness, lightheadedness, or fainting.

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MONITOR CLOSELY: Apomorphine may potentiate the hypotensive effect of vasodilators and antihypertensive agents. Apomorphine alone has been associated with orthostatic hypotension, hypotension, syncope, and dose-dependent decreases in systolic and diastolic blood pressure. In clinical studies of the subcutaneous formulation of apomorphine in patients with advanced Parkinson's disease, hypotension (10% vs 4%), myocardial infarction (3% vs. 1%), serious pneumonia (5% vs. 3%), serious falls (9% vs. 3%), and bone and joint injuries (6% vs. 2%) were experienced more commonly in patients receiving concomitant antihypertensive medications or vasodilators (n=94) compared to those not receiving these medications (n=456). Some of these events may be related to the increased incidence of hypotension.

MANAGEMENT: Caution and close monitoring for altered efficacy and safety are recommended if patients receive apomorphine with an antihypertensive agent or vasodilator. Some authorities consider the combination of subcutaneous apomorphine with antihypertensive medications or vasodilators to be contraindicated due to a lack of data from studies that systematically evaluated the potential interaction between apomorphine and these agents. Patients should be made aware of the possible side effects (e.g., dizziness, lightheadedness, orthostasis) and be cautioned about driving, operating machinery, or performing other hazardous tasks. They should also be advised to avoid rising abruptly from a sitting or recumbent position and to contact their physician if they experience symptoms of hypotension such as dizziness, lightheadedness, or fainting.

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