One more thing. If you are sensitive enough to testosterone to the point you already have a lump, I don't think provirion alone will do the trick. Just be careful and watch closely for the signs. I would def get on the tamox at the first sign of nipples being puffy, sore, or even itchy. Provirion keeps the puffy sore nips down for me, but only on replacement doses. When on cycle I always use adex. Usually Monday Wednesday, and Friday will suffice.