What is an anticoagulant primarily used for?

An anticoagulant is primarily used to prevent normal blood clotting. This type of medication works by interfering with the clotting process, which is essential in preventing unwanted blood clots in the cardiovascular system. By inhibiting the mechanisms that promote clot formation, anticoagulants are vital in the management of conditions such as deep vein thrombosis, pulmonary embolism, and certain heart conditions.

Using an anticoagulant allows for better blood flow and reduces the risk of clots that could lead to heart attacks or strokes. This is particularly important in clinical settings where patients may be at higher risk of thrombosis due to prolonged immobility or other risk factors.

The other options do not accurately describe the primary function of anticoagulants. Enhancing blood circulation or promoting healing from injuries involves different mechanisms and treatments that do not align with the purpose of anticoagulants. Additionally, increasing oxygen levels in the blood typically involves interventions such as oxygen therapy rather than anticoagulant use.