Testosterone Blend is an esterified form of the base steroid steroid testosterone, similar to cypionate and enanthate. The main difference with Testosterone Propionate and Cypionate and Enanthate is that Propionate is a very short ester and is still released quite fast. As such more frequent injections are needed. Levels will peak after 24-36 hours. Testosterone Propionate also stacks well with some other steroids, for bulking is the best stact to use Deca-durabolin (Nandrolone Decanoate) or Equipoise (Boldenone Undeclynate), and can addition Dianabol (Methandrostenlone) or Anadrol (Oxymetholone) for 5-6 weeks, at the beginning to fasten things. Propionate also works in a cutting cycle together with Proviron. With testosterone, almost any combination is possible. Because testosterone is always the stronger compound in a stack.
The downside of a long acting ester like Cypionate is that it can lead to more water retention (although this can be somewhat alleviated by ensuring adequate water consumption and keeping a check on your intake of carbohydrates). Testosterone is also metabolized in the body to the female hormone estrogen by the aromatize enzyme. This can result in gynecomastia (the growth of breast tissue in men) some fat gain, testicular shrinkage and an increase in blood pressure. Hair loss and possible swelling of the prostate are also potential side effects.