Can I decant the vitamins into a pill pot?

No, we recommend keeping the vitamins in their original glass jar. Our packaging is designed to protect the product quality. The glass jar, together with the desiccant and tightly sealed lid, helps prevent moisture and oxidation. Decanting into another container (like a pill pot) can expose the vitamins to air and humidity, which may cause colour changes and reduce their effectiveness.

Is NAC an antioxidant and how does it benefit fertility?

NAC (N-Acetyl Cysteine) is an antioxidant. By combating oxidative stress, it can protect reproductive cells from damage, which may improve egg and sperm health, which are essential for enhancing fertility.

Can both men and women take NAC?

Yes. NAC supports reproductive health in both sexes by reducing oxidative damage in eggs, sperm and reproductive tissues.

Is NAC safe during pregnancy?

NAC has been used safely in clinical settings, including certain high-risk pregnancies, but always check with your healthcare provider before starting any new supplement.

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

Take two 300 mg capsules daily, ideally amino acids such as N-Acetyl Cysteine (NAC) are taken on an empty stomach. However, if you find that this doesn't suit you, you can take it with or after a meal.

Can I combine NAC with other Zita West supplements?

Absolutely. NAC pairs well with multivitamins like Vitafem or Vitamen , plus Omega 3 formulas ( Vital DHA) for comprehensive fertility support.

What if I miss a dose?

Simply take the next day’s capsule as usual. Do not double the dose.

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

NAC antioxidant can provide several benefits for fertility. These include reducing inflammation, improving the quality and function of eggs and sperm, balancing hormones in conditions like PCOS, and enhancing the health of the endometrium - all factors that can improve fertility outcomes. Whilst we recommend a balanced and healthy diet, supplements can be beneficial in ensuring you have adequate intake of nutrients required for supporting fertility.

What are potential side effects of NAC antioxidant supplements?

While NAC is generally well-tolerated, in rare cases, some people may experience side effects such as gastrointestinal issues like nausea, vomiting, diarrhoea, or abdominal pain. It's always recommended to consult a healthcare provider before starting any new supplement regimen.

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

We recommend 600mg NAC per day. Our NAC comes in capsule form, and we recommend taking 2 capsules (600mg) per day.

Are there foods rich in NAC antioxidants?

NAC itself is not found in foods, but you can eat foods rich in cysteine, an amino acid that your body can convert into NAC. These include poultry, eggs, dairy, legumes, and nuts/seeds.

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

Yes. All Zita West fertility support products have been specifically designed to be taken alongside one another. For individuals with PCOS looking for support in managing their symptoms, we recommend taking alongside our Inositol & Folate . For individuals with PCOS who are looking for preconception support supplements, we recommend taking this supplement alongside our PCOS Support Pack .

Why do the capsules smell?

NAC itself does not taste good, as has a particular smell. This is why we recommend consuming in capsule form. and this is why our NAC comes in capsule form. Any smell is completely natural and is safe to consume. The capsule can be pulled apart and mixed with a cold drink like juice to mask the smell and taste.

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

£16.95 Save £0.00

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

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

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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

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?

No, we recommend keeping the vitamins in their original glass jar.
Our packaging is designed to protect the product quality. The glass jar, together with the desiccant and tightly sealed lid, helps prevent moisture and oxidation. Decanting into another container (like a pill pot) can expose the vitamins to air and humidity, which may cause colour changes and reduce their effectiveness.
Is NAC an antioxidant and how does it benefit fertility?

NAC (N-Acetyl Cysteine) is an antioxidant. By combating oxidative stress, it can protect reproductive cells from damage, which may improve egg and sperm health, which are essential for enhancing fertility.
Can both men and women take NAC?

Yes. NAC supports reproductive health in both sexes by reducing oxidative damage in eggs, sperm and reproductive tissues.
Is NAC safe during pregnancy?

NAC has been used safely in clinical settings, including certain high-risk pregnancies, but always check with your healthcare provider before starting any new supplement.
How and when should I take N-Acetyl Cysteine (NAC)?

Take two 300 mg capsules daily, ideally amino acids such as N-Acetyl Cysteine (NAC) are taken on an empty stomach. However, if you find that this doesn't suit you, you can take it with or after a meal.
Can I combine NAC with other Zita West supplements?

Absolutely. NAC pairs well with multivitamins like Vitafem or Vitamen, plus Omega 3 formulas (Vital DHA) for comprehensive fertility support.
What if I miss a dose?

Simply take the next day’s capsule as usual. Do not double the dose.
What are the benefits of taking NAC antioxidant supplements for fertility?

NAC antioxidant can provide several benefits for fertility. These include reducing inflammation, improving the quality and function of eggs and sperm, balancing hormones in conditions like PCOS, and enhancing the health of the endometrium - all factors that can improve fertility outcomes.
Whilst we recommend a balanced and healthy diet, supplements can be beneficial in ensuring you have adequate intake of nutrients required for supporting fertility.
What are potential side effects of NAC antioxidant supplements?

While NAC is generally well-tolerated, in rare cases, some people may experience side effects such as gastrointestinal issues like nausea, vomiting, diarrhoea, or abdominal pain. It's always recommended to consult a healthcare provider before starting any new supplement regimen.
What is the recommended dosage of NAC antioxidants for fertility support?

We recommend 600mg NAC per day. Our NAC comes in capsule form, and we recommend taking 2 capsules (600mg) per day.
Are there foods rich in NAC antioxidants?

NAC itself is not found in foods, but you can eat foods rich in cysteine, an amino acid that your body can convert into NAC. These include poultry, eggs, dairy, legumes, and nuts/seeds.
Is this supplement safe to be taken alongside other fertility supplements?

Yes. All Zita West fertility support products have been specifically designed to be taken alongside one another. For individuals with PCOS looking for support in managing their symptoms, we recommend taking alongside our Inositol & Folate. For individuals with PCOS who are looking for preconception support supplements, we recommend taking this supplement alongside our PCOS Support Pack.
Why do the capsules smell?

NAC itself does not taste good, as has a particular smell. This is why we recommend consuming in capsule form. and this is why our NAC comes in capsule form. Any smell is completely natural and is safe to consume. The capsule can be pulled apart and mixed with a cold drink like juice to mask the smell and taste.

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

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

What is NAC?

How does NAC work?

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Product Certificates

Batch Code

Batch Certificate

Capsules

Dairy Free

Gluten Free

Vegan

Vegetarian

Yeast Free