RUB A535 (also known as Antiphlogistine) is a topical analgesic introduced in 1919 and manufactured by Church and Dwight in Canada. While relatively unknown outside of Canada (it isn't sold in the US), it is indeed a very popular product for the treatment of tough muscle pain, arthritic pains, rheumatic pains, bursitis, lumbago, etc. Church and Dwight claims on their website that nearly all the research, development and production of RUB A535 was and still is done in Canada. Patients who are allergic to salicylates (ASA based drugs, such as Aspirin ), or who are taking anticoagulant medications should avoid the use of the product.
Currently, RUB A535 has been released in a variety of products:
Originally, it was produced in a particular white cream, carrying a rather offensive medical odour.
Recently, the name was also given to a line of dual action back patches that change temperature (known as Hot-Cold patches).
Also, an improved cream was also developed, claiming to be odourless, differing from their normal cream, which carries the same smell as most topical anagesics.
RUB A535 is sometimes referred to by the shorter expression "A535". As the product is particularly Canadian, this usage may be only somewhat local. Meanwhile, for French-speaking consumers in Canada, the name Antiphlogistine is used instead.
According to entries in the SlangDictionary.com, RUB A535 is used in a sexual encounter known as a "Spicey Stranger" or "Fire and Ice". In both applications, the product is applied and rubbed into either the penis or scrotum of the individual to produce a warm or burning sensation. In "Fire and Ice", an ice cube is first used to "freeze" or stimulate the genitals first, and then RUB A535 is applied afterwards to "warm up" the sex organs. This application has not been confirmed.
A similar usage in the USA might involve the use of "Ben-Gay" on the genitals, a practice that is reverved as extremely uncomforatble in the straight athletic community and locker rooms in the USA.