tamoxifen is the generic name for Nolvadex. if you here tamoxifen, they mean nolvadex basically. its like a "tank top" made by "nike". same exact thing. "Tamoxifen", with the name brand of "Nolvadex"...
same with clomid. is clomiphene citrate. Arimidex is arstrozole or something like that.
search "nolvadex pct use"in google.