HCG

HCG increases intratesticular testosterone, which can aromatise to oestradiol. Risk is higher when HCG is used with exogenous testosterone. Manage by monitoring oestradiol levels, using an aromatase inhibitor (AI) if needed, or reducing HCG dose. Typically resolves after discontinuation.

Increased testosterone can stimulate sebaceous gland activity. Usually mild and self-resolving. Manage with good skin hygiene and topical treatments if needed.

Rapid fluctuations in testosterone or oestradiol can affect mood. More common if HCG is used without concurrent testosterone or if doses are too high. Typically resolves with dose adjustment or stabilisation.

Reported in some users, possibly related to hormonal fluctuations or fluid retention. Usually self-resolving; stay hydrated and monitor.

Local irritation at the injection site. Minimise by rotating sites, using proper injection technique, and allowing the solution to reach room temperature before injection.

HCG can increase oestradiol, which promotes sodium and water retention. Usually mild; manage with adequate hydration and monitoring of blood pressure.

Rare reports of mild testicular ache or sensitivity, possibly due to rapid increase in intratesticular testosterone or sperm production. Usually resolves within days.

HCG is used clinically in women for fertility; high doses can cause OHSS (abdominal pain, nausea, vomiting, rapid weight gain). Not applicable to male users, but relevant if HCG is used off-label in women. Requires medical evaluation.

Rare but possible, especially with urinary-derived HCG. Symptoms include rash, itching, difficulty breathing, or anaphylaxis. Seek immediate medical attention if suspected.

Leydig cells can become desensitised to HCG with continuous use, reducing testosterone response. Manage by cycling HCG (e.g., 8-12 weeks on, 4 weeks off) or using pulsed dosing protocols.