The statement ''Rx only'' does NOT need to appear on the packaging of?

The phrase "Rx only" indicates that a medication requires a prescription to be dispensed. It is a labeling requirement for prescription drugs, including controlled substances, which are regulated more strictly due to their potential for abuse or dependency. For OTC (over-the-counter) products, "Rx only" is not necessary because these medications can be purchased without a prescription.

OTC products are deemed safe for use by the general public without a healthcare provider's supervision, assuming they are used according to the provided instructions. Therefore, their packaging does not require the "Rx only" statement because patients do not need a prescription to obtain them. This distinction is crucial for ensuring consumers understand what medications can be obtained without a prescription and which ones require medical oversight.