Simply enter the code BLACKF during checkout and every third 60 capsule pack (the cheapest) in the cart will be free for you.

Buy any 3 packs of 60 caps and pay only for 2, the cheapest one is for free
Buy any 6 packs of 60 caps and pay only for 4, the cheapest two are for free. 
Buy any 9 packs of 60 caps and pay only for 6, the cheapest three are for free. 
Buy any 12 packs of 60 caps and pay only for 8, the cheapest four are for free.  
... and so on    

You may also use this link and the discount code will be applied at checkout automatically. 

This offer is valid while limited supplies last or until Tuesday, November 29th.