What is the meaning of 'hs' in medication instructions?

The abbreviation 'hs' comes from the Latin term "hora somni," which means "at the hour of sleep." In medication instructions, it is commonly interpreted as "at bedtime." This signifies that the medication should be taken when the patient is preparing for sleep, making it particularly relevant for drugs that have sedative effects or are intended to aid with sleep. Thus, choosing this meaning is essential for both the safety and efficacy of the treatment regimen. This understanding ensures that the patient receives their medication at the appropriate time for optimal therapeutic benefit.