In medical prescriptions, what does "qs" mean?

The abbreviation "qs" in medical prescriptions stands for "quantity sufficient." This term indicates that the amount required to achieve the desired effect or complete the prescription should be supplied. When a pharmacist sees "qs" on a prescription, they understand that they should provide an appropriate quantity of the medication to ensure that the patient has enough to complete the treatment as intended, without specifying an exact number. This is particularly relevant in formulations where the total volume or quantity might vary based on specific circumstances or compounding processes.

Understanding this term is crucial for accurate dispensing and ensures that patients receive an adequate supply of their medications.