What action is involved in the instruction '1SP'?

The instruction '1SP' signifies that a single suppository should be inserted. In the realm of medical abbreviations, 'SP' stands for 'suppository,' which is a form of medication designed to be inserted into the rectum, vagina, or urethra, where it then dissolves and is absorbed into the system. This is a very specific directive that addresses both the dosage (1) and the form of medication (suppository), which is essential for ensuring that the patient receives the correct treatment.

In this instance, other options refer to different forms or methods of administering medication, such as swallowing a pill or taking a liquid vial. These do not align with the abbreviation 'SP,' making them less relevant to this instruction regarding administration. The correct understanding of abbreviations is crucial for pharmacy technicians to avoid medication errors and ensure proper treatment.