Which of the following is NOT a requirement for a product containing Ipecac?

The choice that identifies a requirement that is NOT applicable to a product containing Ipecac syrup is that it must be diluted before use. In fact, Ipecac syrup is intended to be used as is — it is a specific emetic that works effectively without the need for dilution.

The other options represent valid requirements related to the safe and proper use of Ipecac syrup. For example, the requirement for the syrup to be sold in 1-ounce containers is intended to limit the amount available for household use, thus reducing the risk of misuse or accidental overdose. The labeling requirement to "call professional before using" is meant to ensure that individuals consult healthcare professionals before administering the syrup, as there are significant considerations in its use, especially given the need for professional evaluation in cases of poisoning. Additionally, the requirement for a warning regarding unconscious patients is crucial since administering Ipecac to an unconscious person could lead to severe complications, such as aspiration pneumonia. Thus, the correct understanding aligns with the specific attributes of Ipecac syrup regulation and usage.