Deca-Durabolin is the most widely spread injectable steroid. Its strong anabolic effect and the insignificant androgenic compound offer a good gain of muscle mass and strength, without any pronounced side effects. The recommended dose for Deca-durabolin is 200-600 mg weekly. The best result is obtained when using 4 mg per 1kg. Deca-durabolin is usually combined with other substances in order to get the wanted result. For defining and striation, it can be combined with 10-20 mg of Winstrol (or Halotestin or Trenbolone) daily. For muscle mass gaining, it combines perfectly with Danabol (300-400 mg of Deca and 20-30 mg of Danabol is a classic cycle), Anapolon or Testosterone.
Deca Durabolin stacks well with a number of steroids, including testosterone cypionate, testosterone enanthate, testosterone propionate, Anadrol, Dianabol and Sustanon 250. One great thing about deca is that it goes nicely with testosterone, which is used as the base for many cycles. At higher doses, testosterone aromatizes (converts to estrogen) much worse; so rather than adding larger doses of testosterone to a cycle, one could add a weekly deca dosage of 300mg-400mg for more mass and strength-building results. Below you can see a test deca cycle (w/ Dianabol kickstarter) from an thread that also includes some constructive criticism: