Peptide Library / Detail
Triptorelin
Half-life
3-5 hours for immediate-release; sustained-release depot formulations provide therapeutic levels for 1-3 months
Delivery
Subcutaneous or intramuscular injection, available as immediate-release solution or long-acting microsphere depot formulations
Dosage
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Research Use Only
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Description
Triptorelin is a synthetic decapeptide analogue of gonadotropin-releasing hormone (GnRH) that acts as a potent agonist. It is primarily used in clinical settings to suppress sex hormone production through continuous administration, leading to a reversible medical castration effect. The peptide has applications in treating hormone-sensitive conditions including endometriosis, prostate cancer, precocious puberty, and as part of assisted reproductive protocols.
Usage
Triptorelin is administered as a subcutaneous or intramuscular injection, typically in depot formulations providing sustained release over 1-3 months. For endometriosis, doses of 3.75mg monthly are standard. In precocious puberty, dosing is weight-based and administered every 4 weeks. Microsphere formulations offer extended-release profiles for improved patient compliance. Stimulation tests using triptorelin (0.1mg) are used diagnostically to assess gonadotropin response in suspected central precocious puberty.
Mechanism of Action
Triptorelin binds to GnRH receptors in the anterior pituitary gland, initially causing a surge in luteinizing hormone (LH) and follicle-stimulating hormone (FSH). However, continuous exposure leads to receptor downregulation and desensitization, resulting in suppressed gonadotropin secretion and subsequent reduction in sex steroid production (testosterone and estrogen). This creates a reversible hypogonadal state that persists during treatment and reverses after discontinuation.
Benefits(7)
- Effective treatment for endometriosis with demonstrated efficacy in reducing pain and lesions
- Androgen deprivation therapy for hormone-sensitive prostate cancer
- Management of central precocious puberty in children
- Synchronization of ovulation in assisted reproductive technology protocols
- Reversible suppression of sex hormone production
- Available in long-acting microsphere formulations for monthly dosing
- Established safety profile in both adult and pediatric populations
Side Effects(8)
- Hot flashes and vasomotor symptoms due to estrogen/testosterone suppression
- Bone mineral density reduction with prolonged use
- Mood changes, depression, and emotional lability
- Decreased libido and sexual dysfunction
- Cardiovascular effects including potential QT prolongation
- Injection site reactions
- Headaches and dizziness
- Metabolic changes including weight gain and altered lipid profiles
Triptorelin — frequently asked questions
What is Triptorelin?
Triptorelin is a synthetic decapeptide analogue of gonadotropin-releasing hormone (GnRH) that acts as a potent agonist. It is primarily used in clinical settings to suppress sex hormone production through continuous administration, leading to a reversible medical castration effect. The peptide has applications in treating hormone-sensitive conditions including endometriosis, prostate cancer, precocious puberty, and as part of assisted reproductive protocols.
What is the half-life of Triptorelin?
Triptorelin has an approximate half-life of 3-5 hours for immediate-release; sustained-release depot formulations provide therapeutic levels for 1-3 months. The half-life determines how often you need to inject to maintain steady blood levels — use the Peptides Calculator half-life calculator to plot your specific dosing schedule and see the decay curve.
How is Triptorelin administered?
Triptorelin is typically delivered via subcutaneous or intramuscular injection, available as immediate-release solution or long-acting microsphere depot formulations. The Peptides Calculator app helps you reconstitute the vial with bacteriostatic water, calculate your exact dose in syringe units, and track each injection.
How does Triptorelin work?
Triptorelin binds to GnRH receptors in the anterior pituitary gland, initially causing a surge in luteinizing hormone (LH) and follicle-stimulating hormone (FSH). However, continuous exposure leads to receptor downregulation and desensitization, resulting in suppressed gonadotropin secretion and subsequent reduction in sex steroid production (testosterone and estrogen). This creates a reversible hypogonadal state that persists during treatment and reverses after discontinuation.
What are the researched benefits of Triptorelin?
Studied benefits of Triptorelin include: Effective treatment for endometriosis with demonstrated efficacy in reducing pain and lesions, Androgen deprivation therapy for hormone-sensitive prostate cancer, Management of central precocious puberty in children, Synchronization of ovulation in assisted reproductive technology protocols, Reversible suppression of sex hormone production, Available in long-acting microsphere formulations for monthly dosing, Established safety profile in both adult and pediatric populations. These are research findings only — Peptides Calculator does not provide medical advice; consult a qualified healthcare professional before starting any peptide protocol.
What are the side effects of Triptorelin?
Reported side effects of Triptorelin include: Hot flashes and vasomotor symptoms due to estrogen/testosterone suppression, Bone mineral density reduction with prolonged use, Mood changes, depression, and emotional lability, Decreased libido and sexual dysfunction, Cardiovascular effects including potential QT prolongation, Injection site reactions, Headaches and dizziness, Metabolic changes including weight gain and altered lipid profiles. Always discuss potential side effects with a licensed healthcare provider before using any research peptide.