Absolutely not. Adding Mast to a Test EQ cycle turns most into sex machines.
Also, you'll hear a lot of people refer to Mast as oral proviron. Not true. The compounds are similiar in that they are both DHT derivatives. However, proviron is purely androgenic, with no anabolic qualities, while Mast is both androgenic AND anabolic. A warning though: many people are very disappointed with Mast after using it. The anabolic/androgenic effect is not as strong as say, Tren, and it will only show dramatic results if you are in the sub 8% body fat range. If don't think you'll be dropping below 8% on this cycle, you may want to save your money for the next cycle.
Finally, many people recommend using it only during the last 4-6 weeks of a cycle. That's wise if you are already pretty lean at that point. However, for me, I will throw it in even earliar if I hit 8% bf prior to the last 6 weeks. I'll run it for 2+ mos if it's worth it. Of course I never use Mast alone. Always with test and whatever else I'm stacking. But be careful, it can be very hard on the hairline. You'll need lots of topicals. Finasteride will do nothing for any DHT compound.