Which medication requires daily blood draws for the first five days of use?

The choice of Warfarin as the medication that requires daily blood draws for the first five days of use is accurate because Warfarin is an anticoagulant that requires careful monitoring to ensure that the patient remains within the therapeutic range for INR (International Normalized Ratio). During the initial days of treatment, the INR can fluctuate significantly, and regular blood draws help clinicians adjust the dosage accurately to avoid complications such as bleeding or thrombosis.

This close monitoring is particularly important because Warfarin’s effects are influenced by various factors, including diet and other medications. Therefore, healthcare providers typically start patients on Warfarin with more frequent INR checks to establish a stable dose before transitioning to less frequent monitoring once stable. This protocol is a standard practice to ensure patient safety and optimize treatment outcomes with Warfarin therapy.