- PCT aims to restart your own testosterone production after steroids have shut it down.
- Clomiphene and tamoxifen (SERMs) raise LH and FSH; hCG stimulates the testes directly.
- Formal evidence in steroid users is limited, but the drugs’ effects on the hormone axis are well documented in medicine.
- Bloodwork after PCT is the only way to know whether you’ve recovered.
Every anabolic steroid cycle ends with the same problem: your body has stopped making its own testosterone. Post cycle therapy (PCT) is the use of medications to help it start again. This guide explains why recovery is needed, how each PCT drug works, what the evidence says, and how to confirm you’ve recovered.
Why PCT exists
Steroids signal the brain that there’s plenty of androgen, so it stops releasing LH and FSH. Without them, the testes stop making testosterone and sperm. When you stop the steroids, it can take weeks to months for the brain and testes to restart. In between, testosterone can be very low, causing fatigue, low libido, low mood and muscle loss. PCT tries to shorten and soften that gap. See our fertility guide for the sperm side of recovery.
The main PCT drugs
| Drug | Class | How it helps | Medical use |
|---|---|---|---|
| Clomiphene (Clomid) | SERM | Blocks estrogen feedback at the brain, raising LH and FSH | Ovulation induction; off-label male hypogonadism |
| Tamoxifen (Nolvadex) | SERM | Same mechanism; also protects breast tissue | Breast cancer; off-label gynecomastia |
| hCG | LH mimic | Stimulates the testes directly | Fertility treatment |
| Aromatase inhibitors | AI | Lower estrogen; occasionally used, with caution | Breast cancer |
What the evidence says
There are few controlled trials of PCT in steroid users. What exists in medicine is strong evidence that clomiphene raises LH, FSH and testosterone in men with low testosterone, and that hCG maintains testicular function. Urologists use clomiphene off-label for male hypogonadism, commonly at 25 mg daily or 50 mg every other day. Studies of former steroid users show that recovery happens in most men without treatment, but can take many months, and some long-term users don’t fully recover.
Timing depends on the ester
PCT is usually started once the steroids have mostly cleared, otherwise the drugs are fighting suppression that’s still happening:
- Short esters and orals (propionate, acetate, Anavar, Dianabol): clear within days
- Long esters (enanthate, cypionate): about two to three weeks
- Very long esters (decanoate, undecylenate): longer still
Side effects of PCT drugs
- Clomiphene: mood swings, irritability, and visual disturbances (stop if these occur)
- Tamoxifen: hot flashes, and a small increase in blood clot risk
- hCG: raises estrogen, which can cause water retention or breast tenderness
- Aromatase inhibitors: crushed estrogen causes joint pain, low libido and poor lipids
Confirming recovery
Test total testosterone, LH, FSH and estradiol about four to six weeks after finishing PCT, then again later if levels are low. If testosterone stays low for months with symptoms, see a doctor: post-steroid hypogonadism is recognized and treatable. Our TRT guide explains the route. Book bloodwork through your family doctor or LifeLabs or Dynacare.
Legal status in Canada
Tamoxifen, clomiphene, anastrozole and exemestane are prescription drugs in Canada (on Health Canada’s Prescription Drug List). None of them is a controlled substance.
Browse PCT products on our PCT page.
Frequently asked questions
Do I need PCT after a cycle?
Most cycles suppress natural testosterone. Whether PCT helps depends on the degree and length of suppression; bloodwork after stopping shows where you stand.
Clomid or Nolvadex for PCT?
Both raise LH and FSH. Tamoxifen is often better tolerated; clomiphene more often causes mood and vision side effects.
When should PCT start?
Once the steroids have mostly cleared: days after short esters and orals, about two to three weeks after long esters.
What if PCT doesn’t work?
If testosterone stays low with symptoms for months, see a doctor. Post-steroid low testosterone is treatable.
Products mentioned in this guide
This article is general information for adults in Canada, not medical advice. Talk to a doctor or pharmacist before using any prescription drug, anabolic steroid or research compound, and get bloodwork done. If you’re in crisis, call or text 9-8-8 (Suicide Crisis Helpline) any time.
