TESTO C 300 (Testosterone Cypionate) is hormones steriod and it is applied for male patients who can not generate enough of natural substance. TESTO C 300 injections are Testosterone Cypionate ingredient in 300mg dose. TESTO C 300 is available in an injection form and it is also used to return levels to a more suitable level. testosterone cypionate injections are stronger than other testosterone. this medication is the best option who are using first time any steroid as it can also gain lean mass and some gains in fattness and water gain.