Under what condition can degraded drugs sometimes be used?

The correct option indicates that degraded drugs can sometimes be used when the remaining amount is above 85-90%. This concept is grounded in the understanding that not all degradation of a drug renders it ineffective or unsafe, particularly if a significant portion of the medication retains its potency and integrity.

In cases where a drug is only partially degraded, there may still be enough active ingredient present to provide therapeutic benefits, making its use under certain circumstances understandable. In a clinical setting, medical professionals may consider this option when there is no viable alternative available, and the benefits of using the remaining dosage outweigh the potential risks associated with its degradation.

This perspective emphasizes the importance of assessing the viability of a medication rather than outright discarding it based on its appearance or expiration status alone. Nonetheless, the use of degraded drugs should be approached with caution and generally follows clear guidelines aimed at ensuring patient safety and effective care.

In contrast, the other options lack the necessary context or criteria for the responsible use of degraded drugs. The complete expiration of a drug makes its use inadvisable due to potential potency loss or harmful effects. An unreadable label could prevent identification of the drug or its proper usage guidelines, while reliance on a physician's approval without considering the drug's actual condition doesn't address