Simvastatin can lower blood lipids, but not blood pressure, because simvastatin belongs to the statin class of drugs, which mainly lowers cholesterol. There are five major classes of commonly used antihypertensive drugs, including angiotensin-converting enzyme inhibitors, angiotensin II receptor antagonists, calcium channel blockers, diuretics, and beta-blockers. Patients with hypertension who have hyperlipidemia in combination also need to use statins for lipid-lowering treatment, which can prevent the occurrence of coronary atherosclerosis.