A newer article is available on this subject: Cold season: managing without antibiotics
Every year New Zealanders spend significant amounts of money on supplements, over-the-counter, complementary and alternative medicines for the common cold. For most people, symptoms of the common cold are mild and self-limiting, and the products used to treat it are often expensive, lacking evidence of effectiveness and in some cases, have potentially serious adverse effects. Patients should be given advice on prevention and management and where possible, given unbiased, evidence-based information on the benefits and adverse effects of over-the-counter and alternative products.