N-Acetyl Cysteine (NAC) – Potent Antioxidant for Fertility and Pregnancy

£16.95

N-Acetyl Cysteine (NAC) is a science backed antioxidant supplement that replenishes glutathione, reduces oxidative stress and supports egg and sperm quality, hormone regulation and high-risk pregnancy needs, all in a convenient once-daily 600mg capsule.


NAC is an antioxidant and anti-inflammatory suitable for both men and women. By replenishing intracellular glutathione, NAC helps reduce oxidative stress, a key factor in egg and sperm damage. Women may benefit from improved ovulation and insulin regulation (especially with PCOS), while men gain protection for sperm function and DNA integrity. NAC also offers extra support in high-risk pregnancies.

What is NAC? 


NAC is a bioavailable precursor to glutathione, the body’s “master antioxidant.” It boosts cellular defences against free radicals and supports detoxification pathways critical to reproductive cell health.


Studies indicate that NAC can reduce inflammation, regulate hormones and support regular cycles, meaning it can be beneficial for those with PCOS.


In men, NAC can positively impact sperm health, including factors like motility, count, and morphology.


Emerging research also suggests that NAC can be beneficial and give additional support for individuals with high-risk pregnancies.


 How does NAC work? 


By raising glutathione levels, NAC neutralises harmful oxidants, reduces inflammation and supports hormone-regulating mechanisms, creating a healthier environment for egg maturation and sperm production.

  • Supports egg and sperm quality by reducing oxidative stress
  • May help regulate ovulation and insulin resistance (beneficial for PCOS)
  • Protects sperm DNA integrity for improved fertility outcomes
  • 300mg NAC per capsule, 600mg per daily serving
  • 60 capsules: two-capsule daily serving
  • One-month supply 
  • Third Party Tested

£16.95

Purchase

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Product Certificates

We believe in complete transparency and quality you can trust. Each batch is independently tested, and we make our certificates available so you can be assured of the purity, safety, and consistency of our products.

Batch Code

Batch Certificate

6952  Download certificate
  • Capsules

  • Dairy Free

  • Gluten Free

  • Vegan

  • Vegetarian

  • Yeast Free

Who is it for?

Why take N-Acetyl Cysteine (NAC) for fertility?

Oxidative stress and inflammation can impair gamete quality and hormone balance. NAC helps counter these factors, making it valuable for anyone facing age-related decline, PCOS-related irregularity or sperm-quality issues.


Why take N-Acetyl Cysteine (NAC) during early pregnancy?

NAC is often recommended for individuals with high-risk pregnancies, due to its potential in reducing oxidative stress, regulating hormonal imbalances, improving endometrial health, and exerting anti-inflammatory effects.


When should I start taking N-Acetyl Cysteine (NAC)?

For best results, begin NAC at least three months before trying to conceive to cover both egg and sperm development cycles.

Ingredients

Nuts

N-Acetyl Cysteine

N-Acetyl-L-Cysteine (NAC) is a precursor to glutathione, the body’s master antioxidant, supporting detoxification and cellular defence.

Female Fertility
NAC promotes the production of glutathione, a powerful intracellular antioxidant that supports oocyte quality and protects against oxidative damage. It also contributes to healthy cervical mucus production and hormonal balance. NAC is commonly used in fertility programmes for women with PCOS, endometriosis, or elevated oxidative stress markers.

Male Fertility
NAC contributes to male reproductive health by enhancing antioxidant capacity, particularly through its role in producing glutathione, a key molecule in protecting sperm from oxidative stress. It may improve sperm concentration, motility and morphology in men with suboptimal semen parameters, and is often used in antioxidant blends to support DNA integrity and mitochondrial function.

Pregnancy
During pregnancy, NAC supports maternal detoxification pathways and protects against oxidative damage. Its ability to regenerate glutathione may help reduce inflammation and support the body’s natural defences during gestation. It has also been studied for its potential to support placental health and manage oxidative stress-related complications, though further research is ongoing. NAC is well tolerated and often used as a supportive nutrient during the first and second trimesters.

 N-Acetyl-L-Cysteine, Brown Rice Powder, Hydroxypropyl Methylcellulose (Vegetable Capsule Shell), Anti-caking Agent (Silicon Dioxide).

Allergens: None.

2 capsules per day provides 600mg N-Acetyl Cysteine (NAC).


Frequently Asked Questions

  • Can I decant the vitamins into a pill pot?

  • Is NAC an antioxidant and how does it benefit fertility?

  • Can both men and women take NAC?

  • Is NAC safe during pregnancy?

  • How and when should I take N-Acetyl Cysteine (NAC)?

  • Can I combine NAC with other Zita West supplements?

  • What if I miss a dose?

  • What are the benefits of taking NAC antioxidant supplements for fertility?

  • What are potential side effects of NAC antioxidant supplements?

  • What is the recommended dosage of NAC antioxidants for fertility support?

  • Are there foods rich in NAC antioxidants?

  • Is this supplement safe to be taken alongside other fertility supplements?

  • Why do the capsules smell?


Still have questions? Book your free 1:1 consultation with our inhouse fertility nutrition for personalised support.

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