What does the abbreviation QHS mean in medical terminology?

The abbreviation QHS in medical terminology stands for "quaque hora somni," which translates to "at each bedtime" in Latin. This designation is used in medical prescriptions and documentation to indicate that a patient should take their medication or receive treatment once at bedtime each day. This specific timing is often chosen for various medications that may be intended to aid sleep or manage nighttime symptoms, thereby aligning the administration with the patient's routine to maximize therapeutic effectiveness.

Understanding the significance of this abbreviation can help healthcare professionals ensure proper dosing schedules and enhance patient compliance, ensuring that the medications work as intended when taken at the correct times.