Almost one billion of us take a regular dietary supplement, mainly vitamin tablets, but how safe are these products?

Dr Derek Muller joins us to discuss his new documentary Vitamania: The Sense and Nonsense of Vitamins, premiering worldwide in August, screening on SBS at 8:30pm on August 12, and SBS On Demand straight after.

Derek will appear on stage for his debut Australian tour along with the premiere of the film on July 30 in Perth, August 2 in Sydney and August 3 in Melbourne.