What does rx and mg mean

Prescription drugs, weight unit. rx is the abbreviation of prescription drugs, prescription drugs is in order to ensure the safety of medication, by the national health administrative department or audited, need to be a physician or other medical professionals with prescription rights to write a prescription for sale, and in the physician, pharmacist or other medical professionals under the supervision or guidance of the use of medicines. mg is the meaning of milligrams, is a unit of measurement, 1g is equal to 1000mg, so mg is a very small unit of measurement, but although small, most of the drug dosage content is usually calculated in milligrams. 1000mg, so mg is a very small unit of measurement, but although small, most of the usual drug dose content is calculated in milligrams.