the origin of "r" symbol is very early, and its tracing form has evolved in a long historical period (pictured).
① It was used as a protective symbol in Egyptian myths and legends about 5, years ago
② It evolved into a prescription symbol for doctors and chemists in the Middle Ages
③ The origin of the prescription symbol
"R" in modern and modern medicine can be traced back to the myths and legends about Horus, the god of bird head, in ancient Egypt about 5, years ago. In ancient Egyptian mythology, God was as sick as man. Legend has it that Horus, the son of Osilis, the god of the sunset, was attacked by Seth, the devil, and injured his eyes when he was young. Isis, his mother, called for help from Thoth, a medical god, who quickly cured him and restored his vision. Although Horus' eyes have been cured, people have turned into birds' heads.
Egypt is located in the desert, and there are many eye diseases. According to the legend of later generations, Horus' eyes are regarded as a symbol of defending and restoring health, and as a talisman to ward off evil spirits. This myth spread to the Middle Ages. In Europe, Horus' eyes were traced to the shape of the Arabic numeral "4". Doctors and chemists in Rome scribbled this glyph on the prescription as a sign of drug administration instructions, but it still had the meaning of praying to Jupiter, the ancient Roman god.
after a long period of evolution, myths and legends have been replaced by scientific experiments. In modern medicine. "Zao" (writing "R.") is still in use, and it has become a special abbreviation that is internationally used and almost inseparable in clinic. There are thousands of prescriptions with the symbol ""in the world every day to convey the information of drug administration.