When we see a doctor in a hospital, we will see the commonly used Latin abbreviations such as the dosage form, dosage and medication method on the prescriptions of western medicines, so as to instruct pharmacies to tell patients how to use drugs when distributing drugs. The meanings of these symbols are as follows:

RP stands for taking medicine

P.O stands for taking this medicine orally

INJ. stands for injection

MIXT. stands for mixture

TAD. stands for tablet

SOL. stands for solution

co. stands for compound

PR. stands for enema

i. I.V stands for intravenous injection

i.v.gtt. stands for intravenous drip

IH stands for subcutaneous injection

IM stands for intramuscular injection

O.M stands for every morning

O.N stands for every night

HS. stands for sleeping with

AM. stands for morning

PM. P.c. stands for

SOS after meals. It stands for once

ST. It stands for immediately

QD stands for once a day

BID stands for twice a day

TID stands for three times a day

QID stands for once every other day

QH stands for once an hour

Q2H stands for once every two hours. Q3H means once every three hours, and so on

MCG means microgram

MG means milligram

G means gram

ML means milliliter

SIM means usage

Source: Internet.