Ralox is great stuff. It has replaced Nolva as the SERM of choice for combating gyno.
Like some other members said, if your estrogen levels are high, you will eliminate gyno even faster by adding an AI. Letrozole is the most effective AI for this purpose, but has some undesirable side effects, so I would not use it unless you are really dealing with significant tissue formation.
If your only trying to get rid of swelling, prevent gyno from forming in the first place, or dealing with mild tissue formation, ralox alone will get the job done.
But...if you have substantial, permanent tissue formation (i.e. visible to others without having to point it out) and want to to shrink it as much as possible, then you may want to consider a Ralox and letro combo.
For those who want the absolute best results possible, you can add a topical DHT cream, such as Andractim, into the mix.