SARMs; Selective Androgen Receptor Modulators, are widely used by UK gym-goers seeking lean gains without the water retention or harsh side effects of anabolic steroids. But here’s the truth: SARMs still suppress your natural testosterone production. That’s where PCT (Post Cycle Therapy) comes in.
Why You Need a PCT After SARMs
Even mild SARMs like Ostarine (MK-2866) and LGD-4033 can lower your body’s own testosterone levels, leaving you feeling flat, tired, and low on motivation once the cycle ends. A structured PCT ensures your hormonal system recovers, protects your hard-earned gains, and keeps libido, strength, and mental clarity intact.
When to Start PCT
Timing depends on the half-life and suppression level of the SARM used.
- For short-acting SARMs like Ostarine or Andarine, start PCT 1–3 days after your last dose
- For stronger suppressive SARMs like RAD-140 or LGD-4033, wait 3–5 days post-cycle
The goal is to allow the compound to clear your system but not delay recovery.
PCT Duration
Standard PCT duration is 4 weeks, but you may extend it to 6 weeks after a heavier or stacked SARM cycle. If you feel lethargic or your libido hasn’t returned by week four, continue for two more weeks.
Best PCT Compounds to Use
Over-the-Counter (Mild SARM Cycles)
- Nolvadren XT or Rebirth PCT (UK-legal supplements)
- Natural test boosters with ingredients like D-aspartic acid, zinc, boron, and Tongkat Ali
- Great for solo cycles of Ostarine, Andarine, or SR9009
Prescription PCT (Strong SARM Cycles)
- Clomid (Clomiphene Citrate): 25–50mg daily for 4 weeks
- Nolvadex (Tamoxifen): 20mg daily for 4 weeks
- Especially recommended for RAD-140, LGD-4033, or YK-11 users
- These are prescription-only medications in the UK and must be obtained legally
Example 4-Week PCT Protocol (RAD-140, LGD, YK-11 Cycle)
Week 1–2:
Clomid 50mg/day
Nolvadex 20mg/day
Week 3–4:
Clomid 25mg/day
Nolvadex 20mg/day
If only using one SERM, extend to 6 weeks or increase dosage based on recovery symptoms. Monitor how you feel in weeks 3–4 for adjustments.
Supportive Supplements to Run During PCT
- Ashwagandha (600mg/day): Stress reduction and libido support
- Vitamin D3 (5000 IU/day): Testosterone optimisation
- Zinc (30–50mg/day): Essential for hormone production
- Omega-3s: Anti-inflammatory and cardiovascular support
These won’t restart your HPTA alone, but they complement your recovery process and help you feel normal faster.
Diet and Training Adjustments During PCT
- Keep protein intake high to retain lean mass
- Lower training intensity slightly to manage fatigue and avoid CNS burnout
- Add extra sleep and recovery time to match your hormonal state
- Avoid cutting aggressively—your body is in a fragile hormonal balance and needs calories to heal
FAQs
Can I skip PCT after a SARM cycle if I feel fine?
No. Even if symptoms aren’t obvious, internal testosterone suppression can still exist. Skipping PCT puts you at risk for long-term hormonal imbalance and muscle loss.
Is Nolvadex or Clomid better for SARM PCT?
Clomid is stronger, while Nolvadex is milder but easier to tolerate. Many gym-goers in the UK run both together for full-spectrum coverage.
Can I get SERMs legally in the UK?
They are prescription-only and not legally sold over the counter. If you choose to use them, ensure you’re sourcing from a legitimate pharmacy with proper consultation.
Are OTC PCT supplements enough after a SARM cycle?
For mild SARMs like Ostarine, they may be sufficient. But for stronger compounds like RAD-140 or stacked cycles, OTC PCT is not enough.
How do I know my testosterone is back to normal after PCT?
Blood tests for total testosterone, LH, and FSH will confirm your hormonal recovery. If bloodwork isn’t an option, monitor libido, mood, strength, and energy as rough indicators.