There is a potential cardiac risk associated with the use of tadalafil in patients with pre-existing heart disease.
Most patients with heart disease have a history of taking nitrates, and drug studies suggest that the use of nitrates in combination with tadalafil may increase the antihypertensive effect of the drug, so this product is contraindicated in patients taking nitrates.
It is also contraindicated in patients with unstable angina or angina during sexual intercourse, myocardial infarction in the past 3 months, heart failure grade 2 or higher in the past 6 months, cerebrovascular disease, uncontrolled arrhythmia, hypotension or hypertension, and those with previous visual defects.
If the patient needs to use the drug, it is recommended to consult a regular hospital and take the drug under the guidance of a doctor, avoid self-medication.