Which of the following best describes the patient's use of medications?

The statement that the patient is not taking any medications best describes his use of medications. This indicates that he is completely medication-free at the moment, suggesting a scenario where he may not have chronic conditions requiring pharmacologic management or he may be managing his health through lifestyle changes.

Understanding the context of the other options can provide greater clarity. If the patient were taking multiple antihypertensives, this would imply he has hypertension being treated actively, which contradicts the assertion of not taking any medications. The use of alternative medications would suggest that he employs non-conventional methods for his health, which also indicates that he is using some form of medication. Regular use of over-the-counter medicines would mean he consumes non-prescription drugs for various minor ailments, again suggesting an active medication use which is not consistent with the answer that he is taking no medications at all.

Thus, the chosen answer illustrates a patient profile that is wholly uninvolved with any form of medicinal treatment, whether prescribed or over-the-counter.