Dr Madeleine Devey, scientific secretary of the Arthritis Research Campaign, said many people with osteoarthritis had been taking glucosamine sulphate for many years.
BBC: Supplement 'eases crippling disease'
2.
Haulage firm boss Hilary Devey left the show last year for her own Channel 4 series and interior designer Kelly Hoppen was announced as a new dragon last month.
BBC: Dragons' Den announces Piers Linney as new member