The medical abbreviation "QHS" stands for "quaque hora somni", which is a Latin phrase that means "every bedtime" or "at bedtime". In medical settings, "qhs" is often used as an instruction to take a medication or perform a task at bedtime or before going to sleep.
For example, a patient might be instructed to take a medication "qhs" to help manage a particular condition. The specific timing of the medication might vary depending on the medication and the patient's individual needs.
It's important to follow the instructions for taking medications or performing tasks "qhs" carefully, as missing doses or performing tasks at the wrong times can affect their effectiveness. If you have any questions or concerns about your medication schedule, it's important to talk to your healthcare provider.