How To Prevent Estrogen Effects with GP Anastrozole by Geneza Pharmaceuticals

GP Anastrozole is an oral aromatase inhibitor manufactured by Geneza Pharmaceuticals. It was created for adjutant therapy of postmenopausal women with hormone receptor-positive early breast cancer. GP Anastrozole is a true aromatase inhibitor which works by blocking the aromatase enzyme in the body, thus limiting the amount of estrogen buildup that takes place.

Another use of anastrozole for men is to maintain a powerfully-built and bulky physique among bodybuilders, especially those who take anabolic steroids. One function of steroids is that it mimics the actions of naturally occurring testosterone, resulting in the increase of protein levels, muscle buildup, and strength improvement. Ironically, the excessive levels of testosterone and testosterone-like drugs signal the body to convert the male hormones into estradiol, which can lead to development of female features such as breasts and fat retention. Bodybuilders counter this hormone conversion by using anastrozole, but usage is often mishandled and may produce more adverse effects.

In studies that have been done, Anastrozole has been shown to reduce estrogen in the body by roughly 50%. This is a good balance for bodybuilders, because some estrogen is needed in order for the full anabolic benefits of the steroids being taken to be achieved.

It is wrong to think, however, that estrogen and its effects (particularly water and fat retention) are absolutely detrimental to bodybuilding. Remember that this hormone is also responsible for muscle strength and gains. Consequently, it minimizes the occurrence of injury as it improves the ability of muscle fibers to withstand contractile tension or stress. Notice that one of the side effects of Anastrozole use is the likely occurrence of fractures, a major drawback of this drug. This is because when Anastrozole effectively blocks the formation of estrogen, it effectively blocks the benefits of this hormone as well. This is why many still decide for estrogen receptor antagonists like Nolvadex and Clomid because these drugs allow some estrogen activity in the body.

Further, aromatase inhibitors like Anastrozole have the tendency to completely suppressed estrogen activity, including its positive effect on cholesterol levels in the body. Anastrozole is known to decrease HDL what is commonly known as the 'good' cholesterol. Typically, bodybuilders using GP Anastrozole will begin taking it the day they start their cycle, and will run it throughout the duration of steroid administration. It is also important to point out GP Anastrozole's ability to increase testosterone in the body. Some studies have shown that natural testosterone levels have increases as much as 60% after the use of this substance for 7 days. Because of this, bodybuilders find this drug extremely effective during PCT where as they are trying to elevate natural levels as much as possible in order to avoid a post cycle "crash".

Daily dosage for males is from 0.5mg to 3mg. For women, a maximum dosage of 1mg per day is enough to combat estrogenic side effects. Because Anastrozole has a short active life, dosages are usually taken two to six times a day at equal intervals. During PCT, athletes normally start with higher dosage then implement a progressive decrease in dosage. The PCT protocol typically runs for seven to 14 days. In clinical studies, it has been observed that a daily dose of 1 mg of this drug results to more than 80% of estrogen suppression.

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IGF-1 and IGF-2 Peptides Hormones

Insulin-like growth factors 1 and 2 (IGF-1, IGF-2) are peptides that are similar in amino acid sequence and structure to insulin and can bind to the insulin receptor having the same glucose lowering effect1. IGF-1 and 2 also binds to the type 1 IGF receptor and are largely responsible for the growth promoting effects of growth hormone. The Type 1 IGF receptor also binds insulin but with lower affinity and is likely responsible for the anabolic effects of insulin beyond those of glucose uptake. There is a type 2 receptor but it only binds IGF-2 and does not appear to be involved with the anabolic effects of IGF-2. IGF-2 has largely been ignored as a promoter of skeletal muscle anabolism but since it signals through the same receptor as IGF-1, it will produce similar anabolic responses.

IGF-1 binds to the type-1 receptor which acts through a cascade of transcription and differentiation factors such as AKT, glycogen synthase kinase 3-beta (GSK-3b), mammalian target of rapamycin (mTOR), myoD and others to increases amino acid uptake and protein synthesis and decreases nitrogen excretion while stimulating the differentiation of satellite cells which can result in growth not only of skeletal muscle but also of internal organs such as the spleen, liver and heart. Circulating IGF-1 is produced by the liver in response to stimulation by growth hormone. IGF-1 in skeletal muscle is produced locally and stimulates hypertrophy and hyperplasia locally in what is referred to as a paracrine action. When produced locally, IGF-1 is often modified to form a slightly different protein called mechano-growth factor or MGF. Testosterone stimulation of the androgen receptor has been shown to result in local production of IGF-1 in skeletal muscle.

IGF-1 circulates in the plasma bound to a family of binding proteins. These binding proteins extend the half-life of IGF-1, which is usually very short. They also transport IGF-1 to target cells and modulate the action of IGF-1. There are six known IGF binding proteins. Under most conditions, IGF binding proteins seem to inhibit IGF-1 activity, probably by reducing the free concentrations available for binding. IGFBPs also inhibit IGF-1 activity by competing with IGF-1 receptors for IGF-1 binding. IGFBP3 can interact directly with cell membranes (possibly through a receptor of its own) to inhibit the action of IGF-1 and to exert effects of its own. IGFBP5 is widely considered to be a potentiator of IGF-1 action, probably by delivering IGF-1 to its receptor. Androgens increase IGFBP5 levels while reducing IGFBP3 levels which further suggests that IGFBP3 is a negative regulator if IGF-1 activity while IGFBP5 is a positive regulator. IGFBP4 has been shown to be an inhibitor of IGF-1 anabolic action in skeletal muscle.

It is no wonder that such a potent anabolic is being used illicitly to try to enhance muscle strength and size. Recombinant IGF-1 in various forms is available for research purposes and though it is not intended for human consumption, users have been experimenting with it for quite some time. Some have attempted to inject recombinant IGF-1 subcutaneously but the quantities needed and the short half-life result in minimal efficacy. Local intramuscular injections seem to produce some local anabolic effect but again, the short half-life limits its utility. A variant form of IGF-1 called Long R3 IGF-1 that has minimal binding to IGF binding proteins and a longer half-life has been used to promote anabolism. The down side to this particular form of IGF-1 is that it circulates at high levels in an unbound form. Circulating IGF-1 has been shown to be associated with tumor progression while IGF binding proteins (particularly binding protein 3) have been shown to protect against tumor progression, likely through restricting the actions of IGF-1. Another form of IGF-1 that has been proposed as an anabolic agent is des(1-3)IGF-1. This shortened form of IGF-1 is incapable of being bound by IGF-1 binding proteins and is much more potent in stimulating hyperplasia in skeletal muscle. Injected locally, this peptide may have better growth promoting properties than native IGF-1. The use of IGF-1, especially in a systemic fashion, will result in decreased natural production of GH.

The IGF system is complex with multiple ligands and binding proteins whose roles are not fully understood. The IGF-1/AKT pathway has been demonstrated not just to promote growth in skeletal muscle but also in internal organs and to play a role in the progression of cancer suggesting that this pathway must be carefully regulated to prevent serious side effects. The fact that these peptides are not scheduled and are available in a pseudo-legal fashion makes them much more available than AAS but with a potentially much higher liability profile. This is one of the unfortunate unintended consequences of the criminalization of AAS.

GHRP-6 and Peptide Hormone Craze

It seems everyone is raving on peptide hormones as the amazing 'new thing' in lazy, drug-induced muscle growth and fat loss. The fact is, injectable peptide hormones have been around for decades. The diabetic hormone Insulin is a peptide hormone and it was first available in the 1920's!

When Peptides Came To Fame
But Growth Hormone (GH) was the peptide hormone that changed everything. GH was credited to creating the new era of muscular bodybuilding monsters from around the time Lee Haney arrived in the 80's. And demand for the drug - and its reputation as being THE underground 'secret of the pros' - was bolstered by its mind-blowingly expensive price and rarity.

Then IGF-1 hit the black market before it was even an approved drug and the mystery and rumors surround GH, Insulin and IGF reached fever pitch. Steroids were old news. Now, if you want to look like a pro bodybuilder you just need to get enough of the right peptides.

GHRP-6
Which brings us to GHRP-6. GH Releasing Peptide is cheap and... well, currently not illegal to purchase over the internet. As the name suggests, it causes GH release; so people figure it must be exactly the same as GH and therefore will make them look like a pro bodybuilder in no time, with no effort and without all the rest of the drugs. Unfortunately, you won't look anything like a pro bodybuilder from using GHRP-6. The only reason it is so HUGELY popular is because finally Mr Average can AFFORD something that looks like the hardcore 'gear' the pro's use... except not.

I don't know anybody who got anything out of GHRP-6 whatsoever! At least, nothing over and above what might be expected from the other 'things' they were doing/taking at the time. In fact, when really pressed, nobody I know seems to know of anybody else who got any great benefit out of it either. All of the guys I know who still use it only do because it is cheap and they don't want to risk not taking it, 'in case it helps'.

So Why Use It?
Everybody knows that pro bodybuilders use lots of drugs and, these days, are as lazy as sin in the gym. The conclusion for many people is that drugs or injecting/boosting your naturally occurring hormones is the only way to build muscle.

Supplements are selling like crazy in response to the belief that the solution to an awesome physique is in a bottle. And if your muscles don't arrive you don't blame your hopeless training or disgraceful diet. You just got the wrong bottle of magic potion.

Many young guys will inject anything they possibly can afford and get and then strangely believe they are transforming into a pro bodybuilder just by being so 'hardcore' as to be taking a drug. I knew a guy who kicked in the door of his own car in a claimed 'roid rage' only minutes after injecting himself with some cooking oil that he thought was a steroid.

When Peptides Become Relevant to Bodybuilding Training
It all comes back to what I've always said: its all about your training. Train and diet properly and a drug-free athlete should be able to achieve about a 260kg deadlift before things become extremely hard to go further. If you can't get a natural 260kg deadlift then you are training and eating wrong. Some guys can even acheive a 260kg deadlift without ever actually doing a deadlift or training hard!

But if the physique of a lean 260kg deadlifter is not muscular enough for you (eg typically around 95kg at 8% bodyfat at 180cm) then you are going to probably need unnatural means to achieve your unnatural goals. Very low dose, testosterone optimisation therapy can help a successfully training athlete to achieve a 300kg deadlift and a great physique (eg around 105kg at 8% at 180cm).

If you still want more unnatural levels of muscle then you probably need to break the law and cycle higher doses of testosterone and/or add GH. Beyond a 340kg deadlift (growing bigger than around 115-125kg at 8% at 180cm) you'll probably need to stay on higher doses of steroids year round.

By the time you reach the muscularity capable of a 360kg deadlift (ie over 130kg, lean at 180cm) as a career-criminal steroid user, then progress will probably be determined by cycles of insulin with GH and IGF-1 and all the rest.

This is the point at which these peptide growth factors become relevant: the pro-bodybuilder level. Without the heavy base of steroid hormones, though, they are a mostly a waste of time and money. And if you are already using all of these drugs to achieve a lesser physique then you need to take a serious look at yourself, your diet and your training!