Sue Nelson gets to grips with a chemical subtlety: isomers. Isomers are chemicals that are made up of the same atoms, but arranged differently. For instance, methamphetamine has two forms: one is a performance-enhancing drug, and the other is a decongestant.
Alain Baxter , the British skier, won a bronze medal in the 2002 Winter Olympics but had it taken away when he tested positive for methamphetamine in his urine sample after using an American Vicks inhaler for his bunged-up nose. Sue Nelson discovers other isomers and how they can be helpful in the drugs industry. Producer Helen sharp