I am on Test Cyp and am having a prob with gyno developing. I have been taking the Arimidex and while it good at keeping estradiol levels down, I am still devopling the lump with the sensitivity. I read somwhere to take Tamox, 40mg the first 5 days, then down to 20 and finally 10. I have the liquid chemical research Tamox. My question is should I stop the Arimidex and just take the Tamox, or take both. Will they cancel each other out?