“Synthetic oxytocin is sold as proprietary medication under the trade names Pitocin and Syntocinon, and as generic oxytocin. Oxytocin is destroyed in the gastrointestinal tract, so must be administered by injection or as nasal spray. It has a half-life of typically about three minutes in the blood, and given intravenously does not enter the brain in significant quantities – it is excluded from the brain by the blood–brain barrier. Evidence in rhesus macaques indicates oxytocin by nasal spray does enter the brain. Oxytocin nasal sprays have been used to stimulate breastfeeding, but the efficacy of this approach is doubtful.
Injected oxytocin analogues are used for labor induction and to support labor in case of difficult parturition. It has largely replaced ergometrine as the principal agent to increase uterine tone in acute postpartum hemorrhage. Oxytocin is also used in veterinary medicine to facilitate birth and to stimulate milk release. The tocolytic agent atosiban (Tractocile) acts as an antagonist of oxytocin receptors; this drug is registered in many countries to suppress premature labor between 24 and 33 weeks of gestation. It has fewer side effects than drugs previously used for this purpose (ritodrine, salbutamol, and terbutaline).
The trust-inducing property of oxytocin might help those who suffer from social anxieties and mood disorders, but with the potential for abuse with confidence tricks and military applications.”
For the off-season athlete there is no anabolic steroid more important or beneficial than testosterone. High levels of testosterone will promote significant increases in lean muscle mass and strength. This is assuming that the individual is consuming adequate calories. Compounds like Testosterone Propionate are not magical, you will still need to feed your body enough calories. During an off-season period of growth, this means total caloric intake will need to be slightly above maintenance. This will, unfortunately, promote body fat gain. However, the key to a successful off-season is gaining lean tissue while minimizing body fat gain to the fullest extent possible. By supplementing with Testosterone Propionate you will be able to achieve this more efficiently. High testosterone levels will promote a stronger metabolic rate. This is not a license to eat like there’s no end in sight, but you should be able to make better use of your calories.
The second problem is the clearly more relevant and probably the more decisive factor for the potentially considerable performance loss of the athletes. As we know, steroids have a highly anticatabolic effect by reducing the catabolic effect of the body's own hormone, cortisone. When taking steroids, the steroid molecules block the cortisone receptors so that the cortisone produced by the adrenal gland cannot attach to the receptors, thus remaining for the most part deactivated. The body reacts by producing additional cortisone receptors so that, in the meantime, the unusually high amount of cortisone receptors in the blood can finally do their job. This again is not very serious as long as the athlete continues to take the steroids as planned. However, when the steroid regime is terminated the cortisone receptors are suddenly freed and the large quantity of free cortisone molecules in the blood now know exactly what to do. They rush to the cortisone receptors to form a molecule/receptor complex and transmit to the muscle cell the following message which is so unpleasant for the athlete: break down amino acids. These leave the muscle cell and enter the blood where they are transformed into glucose or blood sugar. The consequence of this process has already been described in another chapter. The athlete's second problem, in addition to increasing the endogenous testosterone production, is to lower the cortisone level to an acceptable level. As the reader knows, this goal is achievable to a high extent. In the following we will describe a sensible, step-by-step approach to interrupt the steroid regime, and the time after. Particular attention will be paid to the two problematic factors described in detail. We want to, however, explicitly emphasize that this information is no guarantee to protect the athlete from a loss of performance.