Does anyone know how the symbol "Rx" came to symbolize a pharmacy, or a medicine? Is it from the Rexall brand?

Answer 1

There are a few theories as to the origin of the "Rx" symbol. The most common one is that it is an abbreviation of the Latin word "recipe" which means "take". This was originally an order from the doctor to the pharmacist to compound a list of ingredients, in a time before the prevalence of pharmaceutical companies manufacturing prescription drugs.

Other possible origins include references to Egyptian and Roman mythology. The Rx symbol (an "R" with a cross on the diagonal line) looks like the major lines in the Egyptian symbol of the Eye of Horus. The Eye of Horus was worn in ancient Egypt as an amulet to bring good health and prevent illness. The symbol for pharmacy may have originally been an eye with an x below it.

The Rx symbol is also similar to the symbol for the Roman god Jupiter or the astrological symbol for the planet Jupiter. This symbol was included on medicinal formulas to either invoke the protection of Jupiter (the god) or to remove harmful properties of the medicine under the "lucky planet's" influence.

Answer 2

The symbol Rx was around long before the Rexall drug chain, which took its name from the symbol. It is a corruption of the Latin "take".

Answer 3

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Answer 4

As above, it seems to be an abbreviation for the Latin for 'take'. Most good dictionaries will have some etymologic explanation and I've posted a link to one, below.

Answer 5

rx is short for prescriptions refilled.