Dutasteride (Avodart) has more complete suppression of all three 5α-reductase isoenzymes. It inhibits types 1 and 2 better than finasteride, leading to it causing further reduction in DHT at 6 months than the older drug (% versus %).  It also reduces intraprostatic DHT 97% in men with prostate cancer at 5 milligrams per day over three months.  A second study with mg/d for 4 months decreased intraprostatic DHT even further by 99%.  It has also been shown to inhibit the 5α-R3 isoenzyme in vitro ,  suggesting that dutasteride may be a triple 5α reductase inhibitor in vivo . 
Often referred to as Tren Ace or Tren-A has a half life of around 48 hours, due to its short half life Tren Ace needs to be injected a minimum of every second day. Most people choose to use Tren Ace in cutting cycles accompanied with other fast acting steroids such as Testosterone Propionate and Winstrol . Trenbolone acetate usually comes in 10ml vials dosed between 80 and 100mg/ml. Due to the many harsh side effects that come with using Trenbolone, many users choose to use the Acetate version so that they can discontinue use if needed and within a few days the side effects will start disappearing.