Tamoxifen should not be used with the non-sterodial aromatase inhibitors (arimidex and letrozole). For unknown reasons, SERMs (such as tamoxifen) decrease effectivness of the nonsteroidial AIs.
So, you could combine tamoxifen (or raloxifene if you are interested. Some evidence it is better for gyno, but less suited for PCT) with a steroidial aromatase inhibitor, the best option being aromasin or exemestane. Proviron by itself probably wont provide much antiestrogenic activity, but certainly wont hurt and will probably feel nice in the process.
Best thing to do would be moderate antiaromatase activity from the get-go rather than waiting for it to become a problem. Maybe even take aromasin for a week or so before starting the cycle.
Common dosage for on cycle:
tamox 10 mg per day
ralox 30-60 mg per day
aromasin 12.5 mg per day or 25 mg every other day, or 25 mg per day if heavy effect is desired
proviron 50 mg per day
Also if you access to raws, you can make transdermal DHT and apply directly to nipple. I have done this my last cycle and it really seemed to help rapidly with sensitivity, pain, itchiness, and puff.
Good luck!
