Those of you who regularly take multivitamin supplements or other products termed "health supplements" should take a gander at this Which! report.
http://conversation.which.co.uk/energy-home/food-supplements-health-claims-joint-health-probiotics/
Makes for gloomy reading if you want to see evidence in support of some of the health claims these products make.
The Daily Mail have also featured this report in todays "Health" section.
http://www.dailymail.co.uk/news/article-2399370/Health-supplements-Which-says-firms-like-Seven-Seas-Vitabiotics-exaggerate-benefits.html
From the Daily Mail article;
"The industry has submitted 44,000 commonly used claims for supplements and food products for approval by the European Food Safety Authority (EFSA) over the past five years, yet only 248 have been successful.".
And then later some spokesperson for the health supplement industry tries to justify this abject failure with the following comment;
"Graham Keen, director of the Health Food Manufacturers’ Association (HFMA), hit back saying: ‘This new report is inaccurate as it infers that manufacturers are misleading their customers – which is simply not true.
'Just because a certain ingredient does not have an EFSA-approved claim, does not mean that it doesn’t have a beneficial effect.’
He said the reason that EFSA has rejected many claims made for these products is because the assessment process has been too strict.
‘The huge quantity of claims that have been rejected is largely a result of EFSA applying an inappropriate pharmaceutical-style assessment to generic health maintenance claims on food ingredients, an approach usually used for assessing illness-related claims on drugs which are obviously completely different,’ he said."
Riiight - the manufacturers health claims should not be subjected to rigorous testing :)