Best Supplements for Egg Quality: CoQ10, Inositol, ALA, and Folate

If you’re navigating the fertility journey, you’ve likely heard that egg quality is one of the biggest factors influencing your chances of conceiving, whether naturally or through assisted reproduction. As we age, oxidative stress, declining mitochondrial function and hormonal shifts can affect the health of our eggs. 

Because eggs take approximately 90 days to mature, the nutrition choices you make today may influence the eggs that ovulate three months from now.

The good news? Science shows that targeted nutrition can make a real difference.

Why Does Egg Quality Decline with Age?

As women age, both the number and quality of their eggs naturally decline. One of the main reasons is that the mitochondria, the tiny "powerhouses" that produce energy within each egg, become less efficient over time.

At the same time, oxidative stress increases, which can damage the DNA and other important structures inside the egg. These age-related changes may increase the risk of chromosomal abnormalities, reduce fertilisation rates, and lower embryo quality. 

While no supplement can stop the ageing process, research suggests that targeted nutrients may help support mitochondrial function, reduce oxidative stress, and create a healthier environment for egg development.

At SoFitt.™ Nutrition, we believe in giving your body the right tools at the right time. Here’s a clear, evidence-based look at the four supplements most consistently studied for improving egg quality: CoQ10, Myo-Inositol, Alpha-Lipoic Acid (ALA), and Folate (ideally as 5-MTHF).

These are the same evidence-based nutrients included in our Advanced Fertility Support formula, making it easier to obtain several key fertility nutrients in one convenient daily shake.

Coenzyme Q10 (CoQ10) The Mitochondrial Powerhouse

CoQ10 is a naturally occurring antioxidant that plays a vital role in energy production inside your cells’ mitochondria. Eggs are among the most energy demanding cells in the human body, and as we get older, CoQ10 levels naturally drop which can affect egg quality and ovarian response.

A well-known 2018 randomised controlled trial published in Reproductive Biology and Endocrinology looked at women with diminished ovarian reserve undergoing IVF. Those who took CoQ10 before their cycle had:

• More oocytes retrieved
• Higher fertilisation rates
• More high-quality embryos
• Fewer cancelled embryo transfers due to poor development

Other reviews and meta-analyses support these findings, especially for women over 35 or with lower ovarian reserve. Many fertility specialists now recommend 200–600 mg daily of the ubiquinol form of CoQ10 (the active, better-absorbed version) for at least 2–3 months before trying to conceive.

Myo-Inositol Supporting Ovarian Environment & Egg Maturation

Myo-inositol is a naturally occurring compound that helps regulate insulin signaling and supports healthy ovarian function. It’s particularly well-studied in women with PMOS, but benefits extend to egg and embryo quality more broadly.

Multiple meta-analyses and randomised trials show that myo-inositol supplementation can:

• Improve the percentage of mature (MII) oocytes
• Enhance fertilisation rates
• Reduce the amount of stimulation medication needed in IVF

It works by creating a healthier follicular environment and supporting proper hormone balance. Typical effective doses in studies range from 2–4 grams per day, often split into two doses.

Alpha-Lipoic Acid (ALA) The Master Antioxidant

ALA is a unique antioxidant that works in both water- and fat-based environments. It helps neutralise free radicals, reduces oxidative stress, and even regenerates other antioxidants like glutathione and vitamins C and E.

Oxidative stress is one of the key drivers of declining egg quality. ALA helps protect developing oocytes from this damage. A 2020 study published in PMC found that a combination of myo-inositol, alpha-lipoic acid, and folic acid improved oocyte quality and embryo development in overweight or obese women undergoing fertility treatment.

ALA is often used at 600 mg per day in fertility protocols and pairs beautifully with CoQ10 for mitochondrial and antioxidant support.

Folate (as 5-MTHF) DNA Integrity & Healthy Development

Folate is essential for DNA synthesis, methylation, and cell division which are all critical during the complex process of egg maturation. Inadequate folate is linked to higher rates of chromosomal errors in eggs.

Large studies in women undergoing assisted reproduction show that higher supplemental folate intake is associated with:

• Better fertilisation rates
• Higher implantation and clinical pregnancy rates
• Improved live birth rates per cycle

Importantly, many people carry MTHFR gene variations that make it harder to convert standard folic acid into its active form. That’s why SoFitt.™ Nutrition uses the active 5-MTHF (methylfolate) form in our formulations it’s ready for your body to use immediately.

Most experts recommend 400–800 mcg of 5-MTHF daily when trying to conceive.

Why These Four Work So Well Together

Each supplement targets a different piece of the egg-quality puzzle:

• CoQ10 → Cellular energy & mitochondrial health
• Myo-Inositol → Insulin sensitivity & follicular environment
• ALA → Oxidative stress protection
• Folate (5-MTHF) → DNA synthesis & chromosomal stability

Together, these nutrients support multiple pathways involved in healthy egg development, including mitochondrial function, oxidative stress protection, insulin signalling, and DNA synthesis. 

That’s exactly why SoFitt.™ Nutrition designed our Advanced Fertility Support shake with these key nutrients in meaningful amounts so you don’t have to juggle multiple bottles.

How Long Until You See Results?

Eggs take roughly 90 days to mature from their earliest stage. This is why consistency matters. Most women start seeing the best benefits when they take these supports for at least 3 months before actively trying to conceive or starting an IVF cycle (as we discussed in our earlier blog on timelines for improving egg quality).

Practical Tips While Supplementing

• Eat a colourful, antioxidant-rich diet (berries, leafy greens, nuts, seeds, fatty fish)
• Prioritise sleep and stress management
• Stay hydrated and limit alcohol and smoking
• Work with your doctor or fertility specialist especially if you’re on medications or have specific conditions like PMOS or thyroid issues
• Adequate daily protein and omega-3-rich foods
• Maintaining a healthy body weight
• Managing insulin resistance where relevant
• Avoid smoking and vaping

Final Word from SoFitt.™ Nutrition

Improving egg quality is one of the most empowering steps you can take on your fertility journey. While no supplement is a magic fix, the research on CoQ10, Myo-Inositol, ALA, and active Folate is genuinely promising and gives many women renewed hope.

SoFitt.™ Nutrition is here to make high-quality, science-backed support accessible and convenient. Our Advanced Fertility Support is formulated with these exact principles in mind helping you nourish your body while you focus on the rest of your journey.

Women undergoing fertility treatment or taking fertility medications should discuss any supplements with their fertility specialist before starting them.

If you are preparing for pregnancy or IVF, book an online consultation with our fertility dietitian or explore SoFitt.™ Nutrition Advanced Fertility Support to support your fertility journey.

References

• Xu Y, Nisenblat V, Lu C, Li R, Qiao J, Zhen X, Wang S. Pretreatment with coenzyme Q10 improves ovarian response and embryo quality in low-prognosis young women with decreased ovarian reserve: a randomized controlled trial. Reproductive Biology and Endocrinology. 2018;16:29. https://doi.org/10.1186/s12958-018-0343-0
• Canosa S, Paschero C, Carosso A, Leoncini S, Mercaldo N, Gennarelli G, Benedetto C, Revelli A. Effect of a combination of myo-inositol, alpha-lipoic acid, and folic acid on oocyte morphology and embryo morphokinetics in non-PCOS overweight/obese patients undergoing IVF: a pilot, prospective, randomized study. Journal of Clinical Medicine. 2020;9(9):2949. https://doi.org/10.3390/jcm9092949
• Gaskins AJ, Afeiche MC, Wright DL, Toth TL, Williams PL, Gillman MW, Hauser R, Chavarro JE. Dietary folate and reproductive success among women undergoing assisted reproduction. Obstetrics & Gynecology. 2014;124(4):801-809. https://doi.org/10.1097/AOG.0000000000000477
• Akbari Sene A, et al. The effect of myo-inositol on assisted reproductive technology outcomes in women with polycystic ovarian syndrome: a systematic review and meta-analysis of randomized clinical trial studies. International Journal of Reproductive BioMedicine. 2025;23(5):353-376. https://doi.org/10.18502/ijrm.v23i5.19260