ok maybe milder wasn't the right word to use, however, the common theme seems to be that they work at about half speed compared to test (at least from what i have read, i don't really know). and from what i have read the side affects are not as bad either. i was just wondering if it would be effective to take say primo (i didn't know about the libido factor of deca, ill be staying away from that) by itself without stacking