What does disp QS for 30 days mean?

"Disp QS for 30 days" typically refers to a prescription instruction indicating that the medication should be dispensed in a quantity sufficient for 30 days. "QS" stands for "quantum sufficit," which means "as much as sufficient" in Latin, implying that the exact dosage should be tailored to the patient's needs for the duration specified. This instruction ensures that the patient receives enough medication to last for a month.