Gonadorelin (GnRH) — Dosing, Cycles, Half-Life & Side Effects
Gonadorelin (GnRH) is a HPTA recovery agent with a half-life of 2-4 minutes. Synthetic gonadotropin-releasing hormone identical to natural GnRH. Stimulates pulsatile release of LH and FSH from the pituitary. Used to maintain testicular function during testosterone therapy or cycles. This page is educational harm-reduction reference compiled from peer-reviewed literature — not medical advice, not an endorsement, not a recommendation to use. Consult a licensed clinician before any decision.
Quick Facts
| Class | HPTA Support |
|---|---|
| Half-life | 2-4 minutes |
| Hepatotoxicity | None |
| Suppression | 0/10 |
Typical Dosing Ranges
Common dose range: 50-100mcg subcutaneous 2x/day or pulsatile pump
Cycle length: During cycle or TRT
Dose ranges are compiled from published pharmacokinetic studies and community-reported usage. Where a value is community-reported rather than clinically studied, this page and its structured data flag it. Lower end of any range is always the safer starting point.
Stacking Considerations
- No structural stacking blockers. Standard harm-reduction rules apply: minimize total androgen load, minimize oral exposure, and monitor bloodwork.
PCT Requirements
- Never stack two SERMs. Extend a single SERM (tamoxifen OR enclomiphene/clomiphene) rather than combining.
- Use the cycle planner to generate a full protocol based on your complete stack, not this compound alone.
Side Effect Profile
- Very short half-life
- Requires multiple daily doses or pump
- Less convenient than HCG
- Pulsatile dosing optimal
Known Interactions
No compound-specific interactions are catalogued in the current matrix. This does not mean no risk exists — it means there is no curated pairwise entry. Browse the full interaction matrix to cross-reference manually.
Related compounds
Monitoring (Bloodwork & Vitals)
- Comprehensive metabolic panel (baseline, mid-cycle, post-cycle)
- Lipid panel (total cholesterol, HDL, LDL, triglycerides)
- CBC (hemoglobin, hematocrit — watch for erythrocytosis)
- Sex-hormone panel (Total T, Free T, Estradiol sensitive, SHBG, LH, FSH)
- Blood pressure (weekly self-check; flag systolic >140 or diastolic >90)
Baseline bloodwork is recommended before any cycle. Discontinue if liver enzymes exceed 3× upper limit of normal or if hematocrit exceeds 54%.
Frequently Asked Questions
What is the half-life of Gonadorelin (GnRH)?
Gonadorelin (GnRH) has a half-life of approximately 2-4 minutes. This figure is used to determine injection frequency (for esters) and post-cycle clearance timing.
What is the typical dose range for Gonadorelin (GnRH)?
Commonly reported ranges for Gonadorelin (GnRH): 50-100mcg subcutaneous 2x/day or pulsatile pump. Cycle length: During cycle or TRT. These are compiled from published studies and community-reported usage — individual response varies and lower end is always preferred.
Does Gonadorelin (GnRH) suppress natural testosterone?
Gonadorelin (GnRH) causes minimal suppression of the HPTA axis (score 0/10). PCT may still be advisable depending on stack and duration.
What is Gonadorelin (GnRH) typically used for?
Gonadorelin (GnRH) is commonly used for: Fertility preservation during TRT, HPTA maintenance on cycle, Alternative to HCG. Intended-use context does not imply safety — every use case carries the same underlying pharmacological risks.
Is Gonadorelin (GnRH) legal?
Gonadorelin (GnRH) is a controlled substance in many jurisdictions (typically Schedule III in the US when it is an anabolic androgenic steroid). StackItSmart does not provide sourcing information. Possession, import, and use without a prescription carry legal consequences that vary by country and state.
Citations
- FDA NDA 018114. 1982. FDA prescribing information — Gonadorelin (GnRH) FDA-approved diagnostic agent for pituitary function testing
- Belchetz PE, et al. Hypophysial responses to continuous and intermittent delivery of hypothalamic gonadotropin-releasing hormone. Science. 1978;202(4368):631-3. PMID: 100883
Disclaimer
StackItSmart is an independent harm-reduction reference. The content above is compiled from peer-reviewed literature and is not medical advice, not an endorsement, and not a recommendation to use Gonadorelin (GnRH). Performance-enhancing compounds carry legal, endocrine, cardiovascular, and hepatic risks. Consult a licensed clinician before any decision. StackItSmart does not provide sourcing, procurement, or dosing prescriptions.