i'm pretty sure i ran the deca for about six wks that time. i didn't get prolactin but did get a bump under one of my nipples from the sust, most likely. this cycle was cut short. i recommend 8 wks tho since deca is milder in nature and builds better in longer duration (as i've read as well). but man, i got some nasty stretch marks at that time from the rapid water gain from those 2 compounds.