Content reviewed by clinical research staff
Evidence graded using the PeptideScholar A-D system
Triptorelin
AFDA ApprovedGnRH receptor agonist (decapeptide) · 10 amino acids · Brand: Trelstar, Triptodur, Decapeptyl
Triptorelin is a synthetic decapeptide agonist of gonadotropin-releasing hormone (GnRH), approved by the FDA for advanced prostate cancer, central precocious puberty, and endometriosis. It suppresses sex hormone production through pituitary desensitization.
Mechanism of Action
Initially stimulates LH and FSH release (flare effect), but continuous exposure desensitizes GnRH receptors in the anterior pituitary, downregulating gonadotropin secretion. This leads to suppressed testosterone (in males) or estrogen (in females), achieving chemical castration or ovarian suppression.
Benefits
- First-line androgen deprivation therapy for prostate cancer[1]
- Halts progression of central precocious puberty in children
- Treats endometriosis and uterine fibroids via ovarian suppression
- Used in fertility preservation and assisted reproduction protocols
Side Effects
- Initial testosterone flare (first 1-2 weeks; may worsen bone pain)
- Hot flashes, decreased libido, erectile dysfunction
- Bone mineral density loss (osteoporosis risk with long-term use)
- Metabolic changes (increased fat mass, insulin resistance)
- Mood changes, fatigue
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Triptorelin in PeptideScholar's current approved-treatment dataset
Triptorelin is currently modeled on this site as an approved treatment path for: Advanced prostate cancer; central precocious puberty; endometriosis; preoperative treatment of uterine leiomyomata. Brand names in the current dataset: Trelstar, Triptodur, Decapeptyl.
Research & Evidence
Locally advanced and metastatic prostate cancer treated with intermittent androgen monotherapy or maximal androgen blockade: results from a randomised phase 3 study by the South European Uroncological Group.
Intermittent triptorelin monotherapy was non-inferior to continuous maximal androgen blockade for overall survival in metastatic prostate cancer, with better quality of life
PMID: 23582949References
- 1. Locally advanced and metastatic prostate cancer treated with intermittent androgen monotherapy or maximal androgen blockade: results from a randomised phase 3 study by the South European Uroncological Group.. Eur Urol, 2014. “Intermittent triptorelin monotherapy was non-inferior to continuous maximal androgen blockade for overall survival in metastatic prostate cancer, with better quality of life” [PMID: 23582949]
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GLP-1 Support Essentials
Products to help manage side effects and optimize outcomes during treatment.
LMNT Electrolyte Packets
Sodium-focused electrolytes to prevent dehydration and fatigue common in early GLP-1 therapy.
High-Protein Shakes (30g)
Convenient protein shakes to maintain muscle mass on reduced GLP-1 caloric intake.
Metamucil Fiber Supplement
Soluble fiber powder to manage constipation and GI side effects during GLP-1 treatment.
Vitamin B12 (Methylcobalamin 1000mcg)
GLP-1 agonists can reduce B12 absorption over time — methylcobalamin is the most bioavailable form.
Ginger Chews for Nausea
Natural nausea relief for the dose-escalation adjustment period, particularly weeks 1–4.
Unflavored Whey Protein Isolate
Preserve lean mass without excess carbs or calories when appetite is suppressed.
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Progress Tracking Tools
Monitor weight, body composition, and nutrition to maximize results.
Smart WiFi Body Scale
Tracks BMI, body fat %, and muscle mass — essential for monitoring GLP-1 progress over time.
Digital Kitchen Food Scale
Precise gram-level portion tracking helps maximize weight loss results on GLP-1 therapy.
Protein Shaker Bottle Set
Leak-proof mixing bottles for protein shakes — supports consistent protein intake on a smaller appetite.
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Recommended Reading
Books covering peptide science, longevity research, and biohacking frameworks.
The Peptide Protocols
Comprehensive reference for peptide mechanisms, dosing research, and clinical applications.
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Lifespan by David Sinclair
Evidence-based deep-dive into aging science, directly relevant to longevity peptide research.
The Longevity Paradox
Gut-centric aging research with diet and supplementation protocols for extending healthspan.
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Triptorelin FAQ
Medical Disclaimer
This content is for informational and educational purposes only and does not constitute medical advice, diagnosis, or treatment recommendations.
Always consult a qualified healthcare provider before starting, stopping, or modifying any treatment. Do not disregard professional medical advice based on information found on this site.
No claims of therapeutic efficacy are made for substances that are not FDA-approved for the discussed indications. Research citations reflect published findings and do not imply endorsement.
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