These terms are used as frequency of dosage i.e. how many times a patient has to take medicine.
TDS Meaning In Prescription: TDS is an abbreviation that means “Three Times a Day.
HS Means In Medicine Dose:- HS is an abbreviation that means “At Bedtime.”
SOS means When it is needed as per say SOS Paracetamol is when patient feels like he is having fever.
Let’s Wrap It Up!
● OD: Once a Day. You must take medicine once a day at the same time.
● BD: Twice a Day. You must take medicine two times a day at the same time.
● TDS: Three Times a Day. You must take medicine three times a day at regular intervals.
● SOS: As Needed. You must take medicine only when you need it.
● HS: At Bedtime. You must take medicine at night before bed.