Fertigyn (Pregnyl) is the Human Chorionic Gonadotropin (HCG) – this is the full name of this drug or abbreviated HCG – is not an anabolic steroid. More precisely, it is a protein hormone that is formed in the placenta (uterus) of pregnant women. HCG is formed in the female body in the first 6-8 weeks of pregnancy and makes possible the subsequent production of estrogen and gestagen in the corpus luteum. As a result, the production of these hormones in the placenta itself begins. HCG enters from the bloodstream to the kidneys and is then excreted in the urine. That is why it is extracted from the urine of pregnant women.
Introduced from the outside, HCG facilitates the process of ovulation in women, since at the time of maturation of the egg it comes into action and contributes to its release. HCG also contributes to the production of estrogen and yellow body.
HCG and bodybuilding
Attention same bodybuilders HCG attracts for another reason. The fact is that this drug has almost the same qualities as the luteinizing hormone, which is formed in the pituitary gland. In males, luteinizing hormone stimulates the germ cells in the testicles and increases the production of androgenic hormones (testosterone). Therefore, injectable HCG is used by athletes for enhanced testosterone production. As the dosage of steroid drugs is reduced, and even more so after cessation of their use by users, as a rule, a noticeable drop in strength and “mass” is observed. This is mainly due to the fact that the body lacks testosterone.
Already at the very beginning of the steroid cycle, the hypothalamus-pituitary-testes arc is disrupted. Steroids increase the level of testosterone in the blood and give the hypothalamus a corresponding signal. The hypothalamus, in turn, transmits a signal to the hypophysis to reduce or completely stop the production of follicular-stimulating hormone. As a result, the luteinizing hormone begins to act with less intensity on the sex cells in which testosterone production occurs. The additional intake of CHG allows to correct the situation and increase the production of testosterone.
And, once in the body, HCG begins to work almost instantly. HCG is generally unique due to its two-phase effect. The first peak of the rise in plasma-testosterone levels in the blood begins approximately two hours after the injection of HCG, and the second, approximately 48-96 hours. At the same time, the average level of plasma-testosterone increases, and the height of the peaks and the average level depend, according to scientific studies, on the dose of HCG injected.
If we talk about how much HCGneeds to be administered, then I can only give approximate recommendations. For example, the well-known Bill Phillips advises taking 4000 IU (International Units) a week for two to three weeks. However, there are other recommendations, according to which the reception of HCG should be approached individually, based on such a long steroid course, the course, how high the dosage was and what drugs were used. And if, for example, the basis of your steroid menu was “methane” and sustanon, then in this case the dosage of HCG should be higher.
Another question concerns how often gonadotropin injections are given. One of the favorite models of Russian bodybuilders is the option in which 1000-1500 IU of gonadotropin is introduced every second day. On the other hand, according to the research of scientists, a single injection of HCG about 1500 IU increases the level of plasma testosterone by 250-300% and this level lasts for several days (up to five or six). Therefore, it is possible that more rare injections would be more appropriate, say, every five days. If we talk about the period during which one should “sit” on gonadotropin, then here almost all sources are unanimous: no more than three, maximum four weeks.