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Hormonal

Gonadorelin

Also known as GnRH

Keeps natural testosterone and fertility online, often alongside TRT.

Clinical evidence

Overview

Gonadorelin is a synthetic analog of gonadotropin-releasing hormone (GnRH), the body's own signal for initiating sex hormone production. Its most common use in clinical peptide protocols is to preserve testicular function and fertility in men who are on testosterone replacement therapy (TRT) - though it is also relevant to fertility protocols in women. How it works: Gonadorelin prompts the pituitary gland to release LH (luteinizing hormone) and FSH (follicle-stimulating hormone). These hormones travel to the gonads and maintain their function. In men on TRT, exogenous testosterone suppresses the body's own LH and FSH, which over time can cause testicular atrophy and impair sperm production. Gonadorelin bypasses this suppression by providing the upstream pituitary signal directly. Who tends to use it: Gonadorelin is most commonly used by men on TRT who want to preserve fertility and testicular size and function during treatment. It is described as a replacement for HCG in many TRT protocols. It also has applications in female fertility protocols. Its primary goal is hormone support, with libido listed as a secondary target. What to expect: Gonadorelin is used on an ongoing basis alongside TRT rather than as a standalone or short cycle. Its effect is maintenance - keeping the gonadal axis functional rather than producing new symptomatic gains. How it is taken: Gonadorelin is given by subcutaneous injection, 2-3 times per week. Dose and exact timing are set per protocol. It is used on an ongoing basis concurrent with TRT. Safety notes: Gonadorelin is a compounded preparation. It is excluded during pregnancy. It pairs with kisspeptin-10 in hormonal protocols. No other specific cautions are listed beyond the clinical context of use. The decision to use gonadorelin, its dose, and how it integrates with TRT or other hormone protocols are all determined at a PepDepo consultation.

At a glance

Route
SC injection
Dose
Per protocol
Frequency
2-3x per week
Timing
Per protocol
Cycle
Ongoing with TRT
By sex
Mainly used in men on TRT to maintain fertility; also used in fertility protocols for women.

Combining

Stacks well with: Kisspeptin-10

Safety

Replaces HCG for many TRT patients.

Regulatory: Compounded.

Not appropriate if: pregnant.

Questions

Why would someone on TRT need gonadorelin?

TRT suppresses the body's own LH and FSH signals, which over time causes testicular atrophy and reduces sperm production. Gonadorelin provides the pituitary signal that keeps the testes functioning, preserving fertility and testicular size during TRT.

Is gonadorelin a replacement for HCG?

For many TRT patients, yes. The record specifically notes that gonadorelin replaces HCG for many people on TRT.

How is gonadorelin taken?

By subcutaneous injection, 2-3 times per week. Dose and timing are protocol-specific and set at consultation. It is used on an ongoing basis alongside TRT.

Can women use gonadorelin?

Yes. The record notes it is also used in fertility protocols for women, though its primary application in the current data is for men on TRT.

Who should not use gonadorelin?

It is excluded during pregnancy.

Is gonadorelin FDA-approved?

Compounded gonadorelin is not FDA-approved. It is a compounded preparation used within clinical protocols.

What peptides pair well with gonadorelin?

Kisspeptin-10 is listed as a synergistic companion, as both work on the hypothalamic-pituitary-gonadal axis.

Want a personalized protocol?

Exact dosing is set with a licensed provider in the PepDepo network. This page is education, not a prescription.

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Education only, not medical advice. Peptides discussed are for informational purposes and many are not FDA-approved. Eligibility, prescribing, compounding, and dispensing are handled by appropriately licensed entities. Exact protocols and dosing are set with a licensed provider in the PepDepo network at consult. Content is pending clinical review.