Coming off TRT: what PCT actually does and doesn't do

What did @jackxclark actually say?

Jack is documenting a planned transition off TRT using a phased post-cycle therapy (PCT) protocol. His approach: stop testosterone injections, bridge with HCG for a few weeks, wait another few weeks, then introduce Clomid and what sounds like Nolvadex (tamoxifen) to stimulate natural testosterone production.

He also disclosed that a previous attempt to quit cold turkey after eighteen months of PEDs left him with a total testosterone of around 11 nmol/L and near-absent free testosterone roughly six months later. He went back on TRT at 100mg per week in December and is now attempting a medically structured exit. Notably, he tells viewers upfront: "I'm not professional with this. I'm just a guy who went through my own personal journey."

That disclaimer matters. He's not cosplaying as a doctor. He's narrating experience. That changes how we should read the rest.

Does the science back this up?

The phased HCG-then-SERM approach has real clinical logic behind it, even if the evidence base is mostly small studies and clinical consensus rather than large RCTs. Using HCG first to wake up testicular Leydig cells before introducing a SERM like Clomid is a recognized recovery strategy.

The Lipshultz et al. (2014, Fertility and Sterility) retrospective analysis found that HCG followed by a SERM significantly improved gonadotropin levels and testosterone in men with exogenous androgen-induced hypogonadism. Wiehle et al. (2014, Aging Male) showed clomiphene citrate raised LH, FSH and total testosterone in hypogonadal men. The sequencing Jack describes, HCG then SERM, is also consistent with the Khera et al. (2016, Journal of Urology) fertility preservation protocol used in TRT patients wanting to recover endogenous function.

So the broad framework is defensible. The exact timing he mentions, a couple of weeks of HCG, a couple weeks off, then Clomid, is shorter than protocols used in most published work, which tend to run HCG for four to six weeks. That gap matters.

What did they get wrong (or right)?

Credit where it's due: the phased approach is more sophisticated than the typical cold-turkey quit that wrecked his hormones the first time. He identified that mistake himself. A total testosterone of 11 nmol/L after eight months is legitimately low, and his decision to seek medical support this time around is the right call.

Where things get shakier is timing. "A couple weeks" of HCG is probably insufficient. Leydig cell desensitization from prolonged exogenous androgen suppression can take longer to reverse. Liu et al. (2006, Journal of Clinical Endocrinology and Metabolism) found that testosterone recovery after steroid cessation is highly variable and often incomplete at six months in heavy users. A year and a half of PED use followed by TRT represents a prolonged suppression window. Two weeks of HCG is likely too short.

He also mentions "Gens of an N" as the second SERM, which is almost certainly Nolvadex (tamoxifen). The Clomid plus tamoxifen combination has some support, but the evidence favoring the combo over Clomid alone for recovery is not particularly strong. Neither is dangerous at standard doses, but the additive benefit is unclear.

What should you actually know?

If you are considering coming off TRT or recovering from PED-suppressed testosterone, a few things are worth understanding clearly.

• Natural testosterone recovery after prolonged suppression is not guaranteed. Some men do not fully recover, particularly after extended use. Recovery rates drop with age and duration of suppression (Coward et al., 2013, Journal of Urology).
• HCG is not a casual supplement. It is a prescription medication that requires physician oversight. The same applies to Clomid and tamoxifen. These are regulated drugs.
• Doing bloods at six weeks post-cessation, as Jack did the first time, may be too early to assess true recovery. Most protocols recommend checking at three and six months.
• 11 nmol/L total testosterone is below most laboratory reference ranges for adult men (typically 10.4 to 34.7 nmol/L depending on the lab), but free testosterone is often the more meaningful marker. His mention of near-absent free testosterone is the more concerning data point.
• Anyone attempting this without medical supervision is taking on real risk. The protocol Jack describes requires monitoring, not just a written-down list of drug names.

Jack ends with what might be the most honest thing in the video: "originally my best advice is to never do anything ever because you're just going to regret it." That's not a throwaway line. It's the actual conclusion of his experience so far.