Which drug class primarily aims to lower triglyceride levels?

The drug class that primarily aims to lower triglyceride levels is HMG CoA reductase inhibitors, commonly known as statins. Statins are primarily used to lower low-density lipoprotein (LDL) cholesterol, but they also have a secondary effect of reducing triglycerides. They work by inhibiting the enzyme HMG CoA reductase, which plays a central role in cholesterol synthesis in the liver. This reduction in cholesterol production not only lowers LDL cholesterol but also can lead to a decrease in triglycerides through various mechanisms, including increased hepatic clearance of triglyceride-rich lipoproteins.

The other options do not focus on lowering triglycerides. Long-acting beta agonists are primarily used in the management of respiratory conditions like asthma and COPD, aiming to relieve bronchoconstriction. Beta-blockers are used for cardiovascular conditions, such as hypertension and arrhythmias, and while they have some influence on lipid levels, they are not primarily aimed at lowering triglycerides. Calcium channel blockers are also used for hypertension and certain cardiac conditions, primarily affecting blood pressure and heart rate rather than lipid levels. Thus, HMG CoA reductase inhibitors stand out as the correct answer in this context due to their direct impact on lowering triglyceride levels as part of