What is the primary concern when storing drugs in syringes for an extended period?

The primary concern when storing drugs in syringes for an extended period relates to the loss of potency due to absorption. Many drugs can be sensitive to their storage conditions, and when they are stored in syringes, there is a potential for the active ingredients to migrate into the syringe materials themselves or between components, which can lead to a decrease in medication effectiveness.

Certain types of syringe materials can be permeable to specific substances, or the drug may interact with the materials, which alters its chemical structure or stability. This is particularly critical for injections, where the potency of a drug is vital for ensuring that it has the intended therapeutic effect when administered to a patient.

While expiration dates, contamination, and material damage are also important considerations in drug storage, the loss of potency directly impacts the drug's effectiveness, making it a primary concern for veterinary professionals tasked with ensuring the safety and efficacy of medications for animals.