Fat Fat & Vitex (or M)

I’m thinking about trying the fat fast but I’d rather not use androsol for reasons I choose to keep to myself. Would M or vitex provide enough anabolic type support to prevent muscle loss or should I use something a bit more powerful? I only want to lose 15 lb. prior to my next bulking cycle but I’m hoping to make sure it’s all fat (duh!). Thanks in advance.

Wow, this really dropped off the list fast. Any responders out there?