The Enanthate ester causes the release of this drug into the blood to occur more slowly than some other esters and therefore requires injections to be less frequent - it is therefore ideal for beginners who are just getting used to their idea of self administration via Injection. The half-life of the drug is such that a once a week injection can be used, but will cause Testosterone level fluctuations in the blood and therefore twice weekly is more suited. Fluctuating Testosterone levels increase the incidence of various side effects and should be avoided