HPTA Restart Protocol
Risk: ModerateFull hierarchical restart of a crashed hypothalamic-pituitary-testicular axis — kisspeptin signals upstream at the hypothalamus, gonadorelin pulses GnRH at the pituitary, and enclomiphene blocks negative feedback at the hypothalamus while preserving estrogen signalling. Covers the entire axis top-down.
Composition: 3 Ancillaries / PCT
Overview
The HPTA Restart Protocol is for users coming off a suppressive AAS, SARM, or peptide run and looking for a robust, top-down reset of the entire hypothalamic-pituitary-testicular axis. Instead of relying solely on a SERM, this layered approach uses kisspeptin to kick the hypothalamus, gonadorelin to directly stimulate the pituitary, and enclomiphene to remove estrogenic negative feedback. This is NOT a standard PCT—it's for users with a genuinely crashed or stubborn axis, recurring post-cycle hypogonadism, or failed basic SERM restarts who want the highest odds of restoring endogenous testosterone and full fertility. It is not meant for casual bridgeers or natural lifters, and it's overkill for testosterone cycles shorter than 6–8 weeks unless suppression is severe.
Why this stack works
Each compound in this stack targets a different node on the HPTA, maximizing the probability of restart:
- Kisspeptin stimulates the hypothalamic pulse generator, re-synchronizing native GnRH release. This primes the axis upstream of where SERMs and hCG/hMG operate, especially important in users with hypothalamic desensitization.
- Gonadorelin acts as a bioidentical GnRH pulse, bypassing a sluggish hypothalamus and providing pituitary stimulation for LH/FSH output. This supports testicular recovery and avoids the supraphysiological estradiol spikes sometimes seen with hCG.
- Enclomiphene removes negative estrogen feedback at the hypothalamus, which disinhibits endogenous GnRH and downstream gonadotropin release. Unlike clomid, it does this with fewer neurological/mood sides. By stacking enclomiphene with pulse-driven pituitary and hypothalamic triggers, you cover axis nodes that often fail to recover with a single-drug SERM protocol.
Community experience and limited human data suggest this triplex is the highest-probability restart for users with persistent suppression, failed prior PCT, or long-term hormone shutdown.
Protocol timeline
2 phases · 8 weeks total
Timeline shows the 8-week cycle. Bars overlap when phases run concurrently. Click a bar to jump to its detail card.
Cycle starts
2025
Jan
Feb
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Aug
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2026
Jan
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2027
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| Week | Compound | Dose | Frequency | Notes |
|---|---|---|---|---|
| 1-4 | Gonadorelin | 150 mcg | 1x daily (AM) | SubQ, ideally fasted or morning |
| 1-4 | Kisspeptin | 100 mcg | 1x daily (PM) | SubQ, 8-12 hours after gonadorelin |
Begin both gonadorelin and kisspeptin on day 1. Timing and separation help avoid receptor desensitization and maximize LH restoration signal.
- Pulsed dosing of kisspeptin is critical: Do NOT exceed protocol frequency or double-dose, as tachyphylaxis shuts down LH response quickly. Avoid continuous exposure—stick to true daily pulses.
- Avoid high-dose GnRH analogues or extra hCG during this phase—stacking further gonadotropins risks feedback suppression and messes with protocol logic.
- Schedule bloods for LH, FSH, and total T at week 4 before shifting out of this phase: this marks pituitary and testicular responsiveness. Taper only if labs are moving in the right direction.
| Week | Compound | Dose | Frequency | Notes |
|---|---|---|---|---|
| 1-8 | Enclomiphene | 12.5 mg | 1x daily (AM) | Oral, take at same time each day |
Start enclomiphene on day 1 and run it throughout the full 8 weeks, overlapping with the pituitary phase for synergy. Tapering (down to 6.25 mg/day) at week 8 can be considered if LH/T are robustly in range.
- Enclomiphene is strong enough at 12.5 mg for almost all users—the 25 mg dose adds sides with minimal benefit.
- Avoid concurrent use of SSRIs, strong CYP2D6 inhibitors, or other medications that alter SERM pharmacology unless necessary.
- Assess vision and mood at least weekly, especially if personal history of clomiphene/psych sides. Switch to tamoxifen if significant issues.
- No heavy alcohol consumption until post-protocol bloods confirm full HPTA recovery: binge drinking can tank LH response while enclomiphene is on board.
Compounds in this stack
3 linked · tap for full guide
How they work together
Multipliers applied to the projection above when these compounds run together. Values > 1 indicate a bonus, < 1 a penalty.
| Pair | Type | Lean | Fat loss | Recovery |
|---|---|---|---|---|
| synergistic | ×1.15 | ×1.00 | ×1.25 | |
| synergistic | ×1.15 | ×1.05 | ×1.25 |
Where to buy
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Conclusion
This is the most complete, layered approach to HPTA restart in the toolkit. If you've failed simpler PCTs, this protocol hits every axis choke-point. Labwork at weeks 4 and 8 determines success—if testosterone and LH are back in range, you can taper and stand down. Commit to the timeline, dose carefully, and expect the best odds of a true axis reset.
Updated 2026-04-19