What does the signa (sig) in a prescription indicate?

The signa, commonly abbreviated as "sig," in a prescription specifically refers to the directions for use of the medication. This includes detailed instructions on how the patient should take the medication, such as the dosage, frequency, and route of administration. For instance, it might specify to take a certain number of tablets, how often to take them (e.g., twice a day), and whether to take them with food or on an empty stomach.

The clarity and specificity of the signa are crucial for ensuring that patients use the medication safely and effectively, ultimately influencing the therapy's success. Understanding the signa helps pharmacists communicate rights and responsibilities to patients regarding their medications.