Britain and Canada's anti-doping bodies are joining forces to help athletes avoid accidentally failing drug tests.
Both provide online Drug Information
Databases for athletes to consult before taking over-the-counter drugs.
UK Sport's director of drug-free sport John Scott said they are collaborating to set up a a single online resource.
He said: "British and Canadian athletes will benefit from having information at their fingertips to help them compete drug-free."
UK Sport launched its Drug Information Database in January 2002.
It contains information on around 4,000 substances and 6,000 products, covering most UK-licensed pharmaceutical products and many universally generic substances.
This allows athletes and support personnel to check whether or not off-the-shelf medications contain prohibited substances.
Since its launch, the database has received an average of around 100 enquiries per day, peaking at over 150 in the run up to the Athens Olympics.
Products available for purchase in Canada have been added to the database, virtually doubling the number of substances and products athletes can seek advice on.