<P> Definition: For such prescriptions to be accepted as a legal medical prescription, it needs to be filed by a qualified dentist, herbalist, nurse, pharmacist, physician, veterinarian etc., which falls within their remit to prescribe such treatments . This is regardless of whether they included Controlled substances or freely available over-the - counter treatments . </P> <P> Prescriptions may be entered into an electronic medical record system and transmitted electronically to a pharmacy . Alternatively, a prescription may be handwritten on preprinted prescription forms that have been assembled into pads, or printed onto similar forms using a computer printer or even on plain paper according to the circumstance . In some cases, a prescription may be transmitted from the physician to the pharmacist orally by telephone; this practice may increase the risk of medical error . The content of a prescription includes the name and address of the prescribing provider and any other legal requirement such as a registration number (e.g. DEA Number in the United States). Unique for each prescription is the name of the patient . In the United Kingdom and Ireland, the patient's name and address must also be recorded . Each prescription is dated and some jurisdictions may place a time limit on the prescription . In the past, prescriptions contained instructions for the pharmacist to use for compounding the pharmaceutical product but most prescriptions now specify pharmaceutical products that were manufactured and require little or no preparation by the pharmacist . Prescriptions also contain directions for the patient to follow when taking the drug . These directions are printed on the label of the pharmaceutical product . </P> <P>' ℞' is a symbol meaning "recipe". It is sometimes transliterated as "R" or just "Rx". This symbol originated in medieval manuscripts as an abbreviation of the Late Latin verb recipe, the second person singular imperative form of recipere, "to take", thus: "take thou". Medieval prescriptions invariably began with the command to "take" certain materials and compound them in specified ways . </P> <P> Folk theories about the origin of the symbol' ℞' note its similarity to the Eye of Horus, or to the ancient symbol for Zeus or Jupiter, (♃), gods whose protection may have been sought in medical contexts . </P>

What is the meaning of rx in medical line