I have nothing against a supplement for 5:2 or having it promoted here, however:
The official page of the 5:2 Fast Formula presents the creator Dr. Alfred Hasselbacher vaguely as being "Germany´s leading doctor".
The doctor is also listed as being the Head of Medical Research of a web site called OrderVia (
http://www.ordervia.com/index.php/products) specialized in the marketing of health supplements saying "Dr Alfred was previously the private physician for a Saudi Prince!".
His name also appears as being the developer of other supplements: Acai Berry Mix, Meratol, Nuratrim, Male Extra, and now the 5:2 Fast Formula.
The page selling the Male Extra supplement says he is a researcher and professor at Nauka University. A Google search sent me to this page:
http://www.unauka.org/ - a virtual university in Russia with several pages "under construction".
I recommend caution.