Which type of medication is NOT authorized under a category one certification?

The distinction here lies in the specific regulations governing the types of medications authorized under a category one certification. This category typically covers certain forms of medication that can be administered in less invasive ways, such as topical and oral routes.

Intravenous (IV) medications, however, require a higher level of training and certification due to the complexities and potential risks associated with administering medication directly into the bloodstream. This type of administration involves strict protocols and monitoring due to the possibility of immediate adverse reactions and the need for sterile techniques.

By contrast, topical medications can be applied directly to the skin, and oral medications generally involve simpler guidelines and less risk to the patient. Both of these forms can typically be managed under a category one certification.

Therefore, IV medications stand out as not being authorized under this particular certification due to the heightened requirements for training and safety protocols, which are necessary to prevent complications associated with intravenous administration.