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Dr. Grey AI

Condition

Early-Onset Puberty

Early-onset puberty is when puberty starts before age 8 in girls or before age 9 in boys, often because the brain signals sex hormones too early. The strongest evidence is for two prescription medicines, histrelin and nafarelin: trials found histrelin kept luteinizing hormone suppressed for years, and nafarelin brought sex hormones down to prepubertal levels and slowed growth. Vitamin D, omega-3s, probiotics and fiber have only limited evidence.

Sources: PMID 25803268; PMID 2138079

Supplements studied
0
Medicines and peptides
2
Graded outcomes
3
No supplement studies yetWe haven’t found supplement studies for Early-Onset Puberty. The medicines and peptides studied for it are listed below.

Prescription medicines and peptides studied, for context

These are not supplements. Most need a prescription, and some are research compounds with no approved use.

2 medicines and peptides

Nafarelin (Synarel): outcomes studied for Early-Onset Puberty
GradeOutcomeEffectSizeStudiesPeopleStudies list
Puberty Suppression

Suppresses LH and sex steroids to prepubertal levels. Arrests secondary sexual development and slows linear growth.

Changes; see studiesLarge effect16 studies
Histrelin (Vantas/Supprelin): outcomes studied for Early-Onset Puberty
GradeOutcomeEffectSizeStudiesPeopleStudies list
LH Suppression (CPP)

Phase III: maintained excellent suppression of peak LH for 1 year. Long-term extension showed sustained suppression for up to 6 years.

Improves (the measure goes down)Large effect10 studies
Predicted Adult Height

In treatment-naive girls, predicted adult height increased from 151.9 to 166.5 cm (10.7 cm gain) over 60 months.

Improves (the measure goes up)Moderate effect3 studies

Key findings

  • Puberty SuppressionNafarelin (Synarel)Changes; see studies
  • LH Suppression (CPP)Histrelin (Vantas/Supprelin)Improves (the measure goes down)
  • Predicted Adult HeightHistrelin (Vantas/Supprelin)Improves (the measure goes up)

The Early-Onset Puberty Supportive Care protocol

1 primary supplement · 3 supporting supplements

  • Vitamin DAge-appropriate: 600–1,000 IU daily for children (per pediatrician)

See the full protocol

Studies cited

66 studies from PubMed

  1. Periovulatory anticoagulant therapy enhances embryo recovery rates in superovulated mares.Theriogenology, 2025 · PMID 39490086
  2. Adverse event profile differences among long-acting gonadotropin-releasing hormone analogs: A real-world, pharmacovigilance study.PloS one, 2025 · PMID 40644420
  3. Review of drug-drug interactions in patients with prostate cancer.Journal of oncology pharmacy practice : official publication of the International Society of Oncology Pharmacy Practitioners, 2024 · PMID 38720547
  4. Long-term experience with the use of a single histrelin implant beyond one year in patients with central precocious pubertyJ Pediatr Endocrinol Metab, 2023 · PMID 36625262
  5. Fertility preservation in transfeminine adolescents using TESE at the time of Histrelin Acetate subcutaneous implant placement: A Case Series.Journal of pediatric urology, 2023 · PMID 37770134
  6. Case Report: Ovulation Induction in Greater One-Horned Rhinoceros (Rhinoceros unicornis).Frontiers in veterinary science, 2021 · PMID 34277752
  7. Effects of GnRH agonists on testosterone and testosterone-stimulated parameters for contraception and aggression reduction in male lion-tailed Macaques (Macaca silenus).Zoo biology, 2021 · PMID 34224162
  8. Comparative Efficacy of Histrelin Acetate and hCG for Inducing Ovulation in Brazilian Northeastern Jennies (Equus africanus asinus).Journal of equine veterinary science, 2020 · PMID 32797776
  9. Histrelin acetate-induced ovulation in Brazilian Northeastern jennies (Equus asinus) with different follicle diameters.Theriogenology, 2019 · PMID 31254727
  10. Association of Surgical Risk With Exogenous Hormone Use in Transgender Patients: A Systematic Review.JAMA surgery, 2019 · PMID 30516808
  11. Elagolix (Orilissa)--an oral GnRH antagonist for endometriosis pain.The Medical letter on drugs and therapeutics, 2018 · PMID 30383729
  12. Prolonged injectable formulation of Nafarelin using in situ gel combination delivery system.Pharmaceutical development and technology, 2018 · PMID 28430010
  13. Long-term efficacy and tolerability of abdominal once-yearly histrelin acetate subcutaneous implants in patients with advanced prostate cancerBJU Int, 2015 · PMID 25548680
  14. Long-Term Continuous Suppression With Once-Yearly Histrelin Subcutaneous Implants for the Treatment of Central Precocious Puberty: A Final Report of a Phase 3 Multicenter TrialJ Clin Endocrinol Metab, 2015 · PMID 25803268
  15. A single histrelin implant is effective for 2 years for treatment of central precocious pubertyJ Pediatr, 2015 · PMID 23809043
  16. Long-term efficacy and tolerability of once-yearly histrelin acetate subcutaneous implant in patients with advanced prostate cancerBJU Int, 2012 · PMID 21851539
  17. Histrelin: in advanced prostate cancerDrugs, 2010 · PMID 20329807
  18. Relationships between FSH, inhibin B, anti-Mullerian hormone, and testosterone during long-term treatment with the GnRH-agonist histrelin in patients with prostate cancer.European journal of endocrinology, 2010 · PMID 19820037
  19. Analysis of testosterone suppression in men receiving histrelin, a novel GnRH agonist for the treatment of prostate cancer.The Canadian journal of urology, 2010 · PMID 20735905
  20. A review of the pharmacokinetic and pharmacological properties of a once-yearly administered histrelin acetate implant in the treatment of prostate cancer.BJU international, 2009 · PMID 19228147
  21. A review of the use of histrelin acetate in the treatment of prostate cancer.BJU international, 2009 · PMID 19228148
  22. Increased risk of metabolic syndrome, diabetes mellitus, and cardiovascular disease in men receiving androgen deprivation therapy for prostate cancer.Pharmacotherapy, 2008 · PMID 19025432
  23. Efficacy and safety of histrelin subdermal implant in children with central precocious puberty: a multicenter trialJ Clin Endocrinol Metab, 2007 · PMID 17327379
  24. Efficacy and safety of histrelin subdermal implant in patients with advanced prostate cancerJ Urol, 2006 · PMID 16515997
  25. The histrelin implant: a novel treatment for central precocious pubertyPediatrics, 2005 · PMID 16322137
  26. Reversibility of androgen deprivation therapy in patients with prostate cancer.The Journal of urology, 2005 · PMID 15711270
  27. An evaluation of the pharmacokinetics and pharmacodynamics of the histrelin implant for the palliative treatment of prostate cancer.Journal of clinical pharmacology, 2005 · PMID 16239357
  28. Comparison of single-agent androgen suppression for advanced prostate cancer.Reviews in urology, 2005 · PMID 16985882
  29. A randomized, parallel, comparative study of the efficacy and safety of nafarelin versus danazol in the treatment of endometriosis in Taiwan.Journal of the Chinese Medical Association : JCMA, 2005 · PMID 16038370
  30. Delivery and stability of LHRH and Nafarelin in human skin: the effect of constant/pulsed iontophoresis.European journal of pharmaceutical sciences : official journal of the European Federation for Pharmaceutical Sciences, 2004 · PMID 14757511
  31. The case of the elusive androgen.Endocrine practice : official journal of the American College of Endocrinology and the American Association of Clinical Endocrinologists, 2002 · PMID 15260009
  32. Effective long-term androgen suppression in men with prostate cancer using a hydrogel implant with the GnRH agonist histrelinUrology, 2001 · PMID 11597543
  33. Efficacy of nafarelin in assisted reproductive technology: a meta-analysis.Human reproduction update, 2001 · PMID 11212082
  34. An implant releasing the gonadotropin hormone-releasing hormone agonist histrelin maintains medical castration for up to 30 months in metastatic prostate cancerJ Urol, 2000 · PMID 10687989
  35. Treatment of endometriosis with a decreasing dosage of a gonadotropin-releasing hormone agonist (nafarelin): a pilot study with low-dose agonist therapy ("draw-back" therapy)Fertil Steril, 2000 · PMID 10731543
  36. Treatment with nafarelin for endometriosis in young women. Efficacy, safety and lipid metabolism. Niigata Nafarelin Study Group.The Journal of reproductive medicine, 2000 · PMID 10900577
  37. [Conservative treatment of interstitial ectopic pregnancy and endometriosis with laparoscopic methotrexate and potassium chloride and complementary management with nasal nafarelin. Report of a case and review of the literature].Ginecologia y obstetricia de Mexico, 2000 · PMID 10774100
  38. Clinical use of nafarelin in the treatment of leiomyomas. A review of the literature.The Journal of reproductive medicine, 2000 · PMID 10900582
  39. Use of nafarelin versus placebo after reductive laparoscopic surgery for endometriosisFertil Steril, 1997 · PMID 9389816
  40. Retreatment with nafarelin for recurrent endometriosis symptoms: efficacy, safety, and bone mineral density.Fertility and sterility, 1997 · PMID 9176437
  41. Nafarelin vs. leuprolide acetate depot for endometriosis. Changes in bone mineral density and vasomotor symptoms. Nafarelin Study Group.The Journal of reproductive medicine, 1997 · PMID 9252932
  42. Therapeutic efficacy and bone mineral density response during and following a three-month re-treatment of endometriosis with nafarelin (Synarel).American journal of obstetrics and gynecology, 1997 · PMID 9423744
  43. Intranasal nafarelin versus buserelin (short protocol) for controlled ovarian hyperstimulation before in vitro fertilization: a prospective clinical trial.Gynecological endocrinology : the official journal of the International Society of Gynecological Endocrinology, 1996 · PMID 8862491
  44. A review of drug-induced Leydig cell hyperplasia and neoplasia in the rat and some comparisons with man.Human & experimental toxicology, 1995 · PMID 7576816
  45. Prospective randomized double-blind trial of 3 versus 6 months of nafarelin therapy for endometriosis associated pelvic painFertil Steril, 1994 · PMID 7720940
  46. Nafarelin therapy in endometriosis: long-term effects on bone mineral density.American journal of obstetrics and gynecology, 1994 · PMID 7977523
  47. Histrelin. A review of its pharmacological properties and therapeutic role in central precocious pubertyDrugs, 1993 · PMID 7684676
  48. Gonadotropin-releasing hormone agonist as a probe for the pathogenesis and diagnosis of ovarian hyperandrogenism.Annals of the New York Academy of Sciences, 1993 · PMID 8323171
  49. Nafarelin for endometriosis: a large-scale, danazol-controlled trial of efficacy and safety, with 1-year follow-up. The Nafarelin European Endometriosis Trial Group (NEET).Fertility and sterility, 1992 · PMID 1531464
  50. Nafarelin versus leuprolide in ovulation induction for in vitro fertilization: a randomized clinical trial.Obstetrics and gynecology, 1992 · PMID 1533022
  51. Hyperandrogenism--what is normal?The New England journal of medicine, 1992 · PMID 1535116
  52. Medical treatment of endometriosis: a comparison of the suppressive effects of danazol and nafarelin on reproductive hormones.Fertility and sterility, 1991 · PMID 1833245
  53. Efficacy and safety of nafarelin in the treatment of endometriosisAm J Obstet Gynecol, 1990 · PMID 2137971
  54. Nafarelin acetate: a gonadotropin-releasing hormone agonist for the treatment of endometriosisAm J Obstet Gynecol, 1990 · PMID 2151003
  55. Treatment of children with central precocious puberty by a slow-release gonadotropin-releasing hormone agonistEur J Pediatr, 1990 · PMID 2138079
  56. Nafarelin in the treatment of infertility caused by endometriosis.American journal of obstetrics and gynecology, 1990 · PMID 2137973
  57. Nafarelin in the treatment of pelvic pain caused by endometriosis.American journal of obstetrics and gynecology, 1990 · PMID 2137972
  58. Effects of nafarelin versus danazol on lipids and calcium metabolism.American journal of obstetrics and gynecology, 1990 · PMID 2137977
  59. Nafarelin. A review of its pharmacodynamic and pharmacokinetic properties, and clinical potential in sex hormone-related conditions.Drugs, 1990 · PMID 2140979
  60. Role of nafarelin in the management of endometriosisJ Reprod Med, 1989 · PMID 2533616
  61. A new test of combined pituitary-testicular function using the gonadotropin-releasing hormone agonist nafarelin in the differentiation of gonadotropin deficiency from delayed pubertyJ Clin Endocrinol Metab, 1989 · PMID 2529266
  62. Clinical experience treating endometriosis with nafarelinJ Reprod Med, 1989 · PMID 2533617
  63. Administration of nasal nafarelin as compared with oral danazol for endometriosis. A multicenter double-blind comparative clinical trialN Engl J Med, 1988 · PMID 2963213
  64. Lack of correlation between fertility and sperm numbers in male rats treated with histrelin, a potent LHRH agonist.Journal of andrology, 1986 · PMID 3522515
  65. Treatment of endometriosis with a potent agonist of gonadotropin-releasing hormone (nafarelin)Fertil Steril, 1986 · PMID 2932349
  66. Ovulation inhibition with nafarelin acetate nasal administration for six months.Contraception, 1985 · PMID 2936564