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hCG (Human Chorionic Gonadotropin) Side Effects and Safety

Reported hCG (Human Chorionic Gonadotropin) side effects, contraindications, and safety signals.

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Compiled from published research · Last updated 2026-07-24T00:00:00.000Z

Estrogen-Related Effects at Higher Doses

Because raising testosterone via hCG also increases aromatization to estradiol, higher doses can cause estrogen-related effects (water retention, gynecomastia sensitivity) — sometimes managed with an aromatase inhibitor like anastrozole. Injection-site irritation and mood changes are also reported. Hormone-sensitive cancers and precocious puberty are contraindications.

Contraindications

  • pregnancy
  • hormone-sensitive cancers
  • precocious puberty

References

  1. hCG monotherapy for hypogonadism · Madhusoodanan V, et al. · 2019
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