Aussie sport legends raise concerns on labels, transparency in $6.3bn supplement industry

Key points

• Former Olympic gold medallist Duncan Armstrong and Ironman legend Guy Leech are criticising Australia's supplements market, which Complementary Medicines Australia estimates at $6.3bn in 2025. Leech says many products are sold separately, and some labels hide exact ingredient doses under commercial confidentiality rules that are legal under the current system.
• Armstrong warns that supplements can interact with prescription medicines and urges people to check with their doctor first.
• Complementary Medicines Australia reports that 84 per cent of Australians are confident in local supplement safety and quality.