The present disclosure relates to methods for embedding drug molecules into medical catheters, tubes, and other medical devices. The catheter, tube, or other medical device is capable of releasing drugs for extended periods of time. Drugs can be loaded into the wall thereof through diffusion from a solution, e.g., loading solution. A counterintuitive approach of using undissolved drug particulates in the solution is employed in some embodiments. The drug in the wall of the device and in the solution (which when stored may be referred to as a storage solution) can be in dynamic equilibrium, yielding stable and easy-to-manufacture products. Heat can be used to significantly speed up the drug loading.
