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 …