What auxiliary label should be placed on suspension prescriptions?

The correct answer, "Shake Well," is essential for suspension prescriptions because these medications are formulated as liquid mixtures that contain solid particles suspended in a liquid. Over time, the solid particles can settle at the bottom of the container, leading to an uneven distribution of the active ingredient. Shaking the bottle prior to use ensures that the medication is well-mixed and that the patient receives an accurate dose that contains the proper concentration of the active ingredient.

Considering the other options, "Take with food" is typically used for medications that may cause gastrointestinal upset if taken on an empty stomach, which does not pertain specifically to suspensions. "Photoprotect" would indicate that the medication should be protected from light, but this is not a standard requirement for most suspensions. "Keep Refrigerated" may apply to some liquid medications but is not a universal instruction for all suspensions, making "Shake Well" the most relevant and important auxiliary label for these types of prescriptions.