Minoxidil
The following quotation appears near the top of the "Q&A" page on their web site:
"The primary growth agent for men is called Vitadil 5-a and for women it is Vidatil 2-a. Each is formulated at the maximum strength allowed by the FDA. "
The clear implication is that "the primary growth agent" is minoxidil. Hence their cute name ("vitadil"), the 5/2 distinction (5% for men; 2% for women), and the statement that the FDA has approved a "maximum strength" for each sex. If that is the primary growth agent, then it's doubtful that they have added anything significant that would make this effective for people for whom minoxidil is not effective. At a bare minimum, they ought to explain what else is in there, if they want people to think it'll achieve anything more than generic minoxidil.