I think 3 weeks of 20mg. ED is going to hurt your liver. You should take a week or two off in between your four-week cycle.
Hepatoxicity is no joke, and I don't think it has been emphasized enough with this product. It is more liver toxic than MOST illegal anabolic steroids. If you want gains this badly, you'd be better off injecting something.
You want 900mg of Milk Thistle 3x daily
For prostate, Saw Palmetto and cranberry extract
For BP, Coenzyme Q-10 and Omega-3s
Also, some ALA would be good
If you are at all worried about side effects, there are better alternatives. I wouldn't touch 20mg. of a methyl-steroid if I had a family historyof pattern baldness or prostate cancer.