Some steroids are taken into the body by orally, some are too also injected intramuscularly with syringes and needles. A lot of body builders, athletes, etc. prefer injectable forms because they affect the liver less then orals.  It is the fastest and most effective application of steroids. Injectable steroids, which are synthetic hormones, are carried by different esters. The professionals improve with steroids of longer esters and cut with shorter ones. A client's usage frequency of steroids rely on the esters. The longer an ester, the less frequency of injecting, the shorter esters are generally for test and water retention goals. Injectable steroids are oil-based and they artificially intended to have longer half-lives than orals.  It allows you to take much fewer doses unlike the oral steroids, which you need to take daily on a regular basis. It also stays longer in the human system and may be identified on medicament tests.

These are the best known injectable steroids,

    Boldenone, Drostrolones, Nandrolones, Primobolan, Testosterone Base, Testosterone Blends, Testosterone Cypionate, Testosterone Enanthate, Testosterone Propionate, Testosterone Undecanoate, Trenbolones, Winstrol.