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Xeno Laboratories
Buy HCG 5000 IU by Xeno Labs at XSteroids. The card sells a single 5000 IU vial of chorionic gonadotropin as a lyophilised powder that has to be mixed before use, and every figure on this page relates to that one vial. The text covers the hormone itself and the approved medicines it copies, what happens at the Leydig cell, the arithmetic of turning powder into a usable concentration, where the hormone fits at the end of a suppressive cycle, why it is not a substitute for a SERM, and what the label and the anti-doping rules have to say.
Chorionic gonadotropin is an approved prescription medicine in several forms, and that fact is the first thing to separate from what is sold here. The Xeno Labs vial is a research item: it carries no approved dosing instruction, has no pharmacy registration in the United States or the European Union, and does not replace a prescription product. Only the active substance is shared.
One glass vial holding 5000 IU of lyophilised chorionic gonadotropin, which is a glycoprotein rather than a small molecule. It is built from an alpha subunit of 92 amino acids that is shared with luteinising hormone, follicle stimulating hormone and thyroid stimulating hormone, and a beta subunit of 145 amino acids that gives the hormone its identity. In nature the placenta is the main source.
Strength is stated in international units because the substance is biologically standardised, not weighed. The approved forms - Pregnyl and Novarel from the urine of pregnant women, and the recombinant Ovidrel - are the reference points for how the material behaves. What arrives here is the powder alone; the water, the syringe and the arithmetic are the buyer's part of the job.
The hormone is an agonist at the same receptor luteinising hormone uses. In men it binds receptors on the Leydig cells of the testis and turns on testosterone synthesis, which is why the tissue it targets responds even when the pituitary has stopped sending its own signal. In women the same receptor event mimics the mid-cycle luteinising hormone surge and triggers ovulation, which is the basis of its approved fertility use.
That mechanism explains both the benefit and the ceiling. HCG can restore the size and output of the testes during or after a suppressive cycle, but it does not restart the pituitary, and continuous high exposure can desensitise the Leydig cells it depends on. Because the testosterone it produces inside the testis also aromatises, estrogen management stays on the agenda even though no exogenous aromatising steroid was taken.
The first visible change is usually testicular volume, noticed within the first week or two of use rather than on any scale. Because the hormone raises intratesticular testosterone, some users also report a lift in libido and mood along with a modest rise in water and nipple sensitivity, both of which trace back to aromatisation rather than to the hormone itself.
Nothing about the experience is linear. A vial used at a moderate amount produces a smoother response than a large one, and the response fades if exposure is continuous rather than intermittent. Judging the result means looking at testicular size, libido and a blood panel together, and remembering that a normal-looking month does not mean the pituitary has recovered.
All of the arithmetic starts from the 5000 IU figure on the label. Adding 5 ml of bacteriostatic water gives 1000 IU per ml, so a tenth of a millilitre carries 100 IU and ten units on a U-100 insulin syringe draw the same. Adding 2 ml gives 2500 IU per ml, and adding 1 ml gives 5000 IU per ml, which is convenient for volume but unforgiving of a small measuring error.
Published dosing for the approved medicines runs from 500 to 1000 IU three times a week in one hypogonadism schedule, up to 4000 IU three times a week in another, and 5000 IU every other day for four injections in a third. Those are label figures for a supervised prescription, repeated here only so the numbers in circulation have a source. The vial itself comes with no instruction sheet.
HCG is a support item, so what surrounds it matters more than the vial alone. Testosterone Esters from Xeno Labs are the base most cycles are built on, and the cypionate and enanthate versions are the ones usually named next to HCG in the search data. Nandrolone Esters and other long esters suppress the axis harder still, which is where testicular support becomes a live question.
Estrogen control belongs to the same conversation. Arimidex (anastrozole) or Aromasin (exemestane) should enter the plan on the strength of a measured estradiol value rather than a guess, because the intratesticular testosterone HCG raises can aromatise. For the gonadotropin side of fertility, HMG 75 IU covers follicle stimulating hormone activity, which HCG does not.
This is the part most often confused. HCG imitates luteinising hormone, so it does the pituitary's job instead of waking the pituitary up. Stop it and the axis is still asleep unless something else restarts the signal. That restart is what a SERM does, and the two belong to consecutive phases rather than to the same one.
The usual order puts HCG in the window before the last long ester clears reasonably, then clears it from the system before a SERM course begins, because both drugs competing for the same receptor would waste the SERM. Tamox (tamoxifen) and Clomiphene carry that phase here, run for several weeks with a blood draw before and after.
Label warnings name early puberty, prostate cancer or another androgen dependent tumour, and a previous allergic reaction to the hormone as reasons not to use it. In practice the effects users report are estrogenic in origin: water retention, breast tenderness in sensitive individuals, acne, and mood swings, all consistent with the aromatisation of intratesticular testosterone. Headache and injection site irritation are common and minor.
The anti-doping position is unambiguous. WADA lists chorionic gonadotropin in class S2.2.1, testosterone stimulating peptides in males, which means it is prohibited for male athletes at all times, in and out of competition. Women are not addressed by that class. The page is a research reference and contains no medical advice.
The powder is the durable part. Keep the sealed vial between 2 and 8 C for a long shelf life, or at ordinary room temperature for shorter periods with light excluded, exactly as the approved labels allow. Once water is added everything changes: the mixed solution belongs in the refrigerator at 2 to 8 C, must never be frozen, and is used within a limited window, 30 days under one label and up to 60 under another. Vials with a damaged cap or a cloudy, particle-laden solution get discarded rather than used.
The vial belongs to the Xeno Labs range stocked on this site, where the bases, aromatase inhibitors and SERMs that surround a recovery phase sit on the same shelves, so a whole sequence fits into one order. Checkout is encrypted and packing is discreet; orders inside the United States land in three to six days, and post abroad runs twelve to twenty-six. The linked cards below cover the compounds most often discussed alongside this one.
It is a glycoprotein hormone made of an alpha subunit shared with luteinising hormone and a beta subunit unique to it. In nature it is produced by the placenta. Approved medicines such as Pregnyl and Novarel extract it from the urine of pregnant women, while Ovidrel is produced recombinantly.
No. Chorionic gonadotropin is an approved prescription medicine, but the vial sold here is a lyophilised research product. It carries no approved dosing instructions, holds no pharmacy registration, and should not be treated as a substitute for a prescribed preparation of the same hormone.
It depends on the concentration wanted. Five millilitres of bacteriostatic water gives 1000 IU per ml, two millilitres gives 2500 IU per ml, and one millilitre gives 5000 IU per ml. The smaller the volume, the larger the error from a single imprecise unit on the syringe.
Label schedules include 500 to 1000 IU three times weekly, 4000 IU three times weekly in a longer protocol, and 5000 IU every other day for four injections. Those are figures for supervised prescription use and are quoted here only to show where the widely repeated numbers originate.
Because long suppressive cycles shrink the testes and cut their output. The hormone stimulates Leydig cells directly, restoring size and testosterone production without waiting for the pituitary. It does not restart pituitary signalling, so a SERM phase is still needed afterwards.
No. HCG acts like luteinising hormone and so does the pituitary's work instead of waking it. A SERM raises the pituitary's own output. Using both at the same time makes them compete for the same receptor, so the usual practice is to finish one before starting the other.
You can buy the HCG 5000 IU vial by Xeno Labs online at XSteroids, direct from the brand catalogue. Place the order for this page and check out over the encrypted connection. A US address normally receives a parcel in three to six days, an international one in twelve to twenty-six.
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