What is an important storage instruction for medications like nystatin?

The correct storage instruction for medications like nystatin is to store it at room temperature away from moisture, heat, and light. This is important because nystatin is a topical antifungal medication, and its stability and effectiveness can be compromised if it is subjected to extreme temperatures or humidity. Storing it in a cool, dry place helps to ensure that the medication retains its potency and is safe to use.

Room temperature storage minimizes the risk of degradation that can occur with exposure to cold or freezing temperatures, as certain medications can become less effective when frozen. Additionally, excess moisture and heat can lead to the breakdown of the active ingredients in the medication. Protecting it from light also helps prevent photodegradation, which can adversely affect the drug's efficacy.

Other storage conditions, such as refrigeration or freezing, might actually lead to changes in the formulation or effectiveness of nystatin. Moreover, storing items in a high humidity area would contradict the need to keep medications dry to maintain their stability.