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What is Intex Pharma HCG 5000IU?
Intex Pharma HCG 5000IU is pharmaceutical grade Human Chorionic Gonadotropin, supplied as a lyophilised powder in a 5000IU vial for subcutaneous injection following reconstitution with bacteriostatic water. HCG is the most direct tool available for testicular stimulation during and after a suppressive steroid cycle. It mimics luteinising hormone (LH) at the Leydig cell receptor with greater affinity and a longer half-life than endogenous LH. The result is sustained stimulation of intratesticular testosterone production, prevention of testicular atrophy, and restoration of Leydig cell responsiveness in preparation for PCT. Available from the Intex Pharma shop at £37.00 with same day UK despatch.
HCG requires reconstitution before use. Each 5000IU vial is mixed with bacteriostatic water to produce an injectable solution. Intex Pharma stocks bacteriostatic water separately for this purpose. Once reconstituted, the solution should be refrigerated and used within 60 days.
How Intex Pharma HCG works
Under normal physiology, the pituitary gland releases LH in pulses. LH binds to receptors on the Leydig cells in the testes and stimulates testosterone production. When a steroid cycle suppresses LH output, the Leydig cells stop receiving the signal to produce testosterone. Without LH stimulation, testicular volume decreases and Leydig cell function deteriorates progressively over the cycle duration.
HCG is structurally homologous to LH and binds the same LH/CG receptor on Leydig cells. It has a half-life of 24 to 36 hours, significantly longer than endogenous LH’s 20-minute half-life. This extended binding produces sustained Leydig cell stimulation from relatively infrequent injections. Research by Coviello et al. published in the Journal of Clinical Endocrinology and Metabolism demonstrated that low-dose HCG maintained intratesticular testosterone concentrations during testosterone-induced gonadotropin suppression. Intratesticular testosterone concentrations of 100 to 200 ng/dL, which are 10 to 20 times higher than serum levels, are required for spermatogenesis. HCG at doses as low as 250 to 500IU two to three times weekly achieves this.
How to reconstitute Intex Pharma HCG 5000IU
HCG must be mixed with bacteriostatic water before injection. Do not use sterile water. Do not use plain saline. Bacteriostatic water contains benzyl alcohol, which preserves the reconstituted peptide for up to 60 days refrigerated. Sterile water without a preservative degrades the peptide within 24 hours of mixing.
Dosing reference at 2500IU per ml concentration
HCG protocols — on cycle and pre-PCT
On-cycle maintenance
250 to 500IU injected subcutaneously two to three times per week throughout the cycle. This prevents testicular atrophy and maintains Leydig cell responsiveness. It does not interfere with the anabolic effects of the cycle. It significantly reduces the severity of PCT by keeping the testes primed rather than allowing them to become dormant.
Pre-PCT blast protocol
500 to 1000IU injected every other day for two weeks in the window between the last injection and the start of Intex Pharma Nolvadex or Intex Pharma Clomid. This primes the testes for the SERM phase by restoring Leydig cell sensitivity to LH stimulation before PCT begins. HCG must be stopped before SERM therapy starts because HCG raises oestrogen, which works against the oestrogen receptor blockade that Nolvadex and Clomid depend on.
HCG must not be run simultaneously with SERMs
This is the most important sequencing rule for HCG use. HCG stimulates testicular testosterone production which aromatises to oestrogen. Elevated oestrogen during SERM therapy undermines the mechanism of action of both Nolvadex and Clomid. The correct sequence is: end of cycle, then HCG for two weeks, then SERMs. Not HCG and SERMs together.
Side effects
- Oestrogen elevation. HCG stimulates testosterone production which aromatises. Managing oestrogen with a low-dose aromatase inhibitor during HCG use is appropriate if oestrogen-sensitive symptoms appear.
- Leydig cell desensitisation. High doses of HCG over extended periods can desensitise LH receptors. This is why HCG should not be run at doses above 1000IU per injection or for longer than necessary.
- Injection site reactions. Mild redness or soreness at the injection site. Rotating sites reduces this.
- Gynecomastia risk. Elevated oestrogen from HCG-stimulated aromatisation can trigger breast tissue sensitivity. Monitor oestrogen symptoms and manage proactively.
Frequently asked questions about Intex Pharma HCG 5000IU
What is Intex Pharma HCG 5000IU used for in bodybuilding?
Intex Pharma HCG 5000IU is used to prevent testicular atrophy during suppressive steroid cycles, to maintain intratesticular testosterone and spermatogenesis, and to prime the testes for post-cycle therapy by restoring Leydig cell responsiveness before SERM therapy begins. It is the most direct available intervention for testicular function maintenance during anabolic steroid use.
How do I mix HCG 5000IU for injection?
Add 2ml of bacteriostatic water to the 5000IU vial. This produces a concentration of 2500IU per ml. Gently swirl until the powder dissolves fully. Do not shake. Refrigerate immediately and use within 60 days. Always use bacteriostatic water rather than sterile water. Sterile water without a benzyl alcohol preservative degrades the reconstituted HCG within 24 hours.
When should I use HCG during my cycle?
There are two approaches. The first is low-dose maintenance throughout the cycle at 250 to 500IU two to three times per week. This prevents testicular atrophy from developing and keeps Leydig cells responsive throughout the cycle. The second is a two-week pre-PCT blast at 500 to 1000IU every other day, beginning after the last injection and ending before SERM therapy starts. Both approaches improve PCT outcomes. The on-cycle maintenance approach is preferable for long cycles.
Can I use HCG at the same time as Nolvadex or Clomid?
No. HCG and SERMs should not be run simultaneously. HCG stimulates testosterone production which aromatises to oestrogen. Elevated oestrogen during SERM therapy counteracts the oestrogen receptor blockade that Nolvadex and Clomid depend on for their mechanism of action. The correct sequence is HCG first, then SERMs once HCG is stopped.
Does HCG raise oestrogen?
Yes. HCG stimulates testicular testosterone production. A proportion of this testosterone aromatises to oestradiol. Users who are oestrogen-sensitive may experience elevated oestrogen symptoms during HCG use. A low-dose aromatase inhibitor can be used alongside HCG to manage this. This is separate from the SERM phase, where aromatase inhibitors and SERMs have different roles and different interactions.
Is Intex Pharma HCG 5000IU pharmaceutical grade?
Yes. Intex Pharma HCG 5000IU is produced to pharmaceutical grade standards and independently tested by Janoshik Analytical. The Certificate of Analysis confirming identity, purity and concentration is available in the product gallery on the Intex Pharma shop before you order.
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