Hypersensitivity to hydralazine; coronary artery disease; mitral valvular rheumatic heart disease.
Hydralazine is contraindicated in patients with severe tachycardia, dissecting aortic aneurysm, heart failure with high cardiac output, cor pulmonale, or myocardial insufficiency due to mechanical obstruction, for example aortic or mitral stenosis or constrictive.
Hydralazine is also contraindicated in patients with idiopathic systemic lupus erythematosus (SLE) and related disorders.