Best Supplements for Polycystic Ovaries (2026) – Top 10 Reviewed
Managing polycystic ovary syndrome (PCOS) often requires a multifaceted approach, and the right supplements can play a crucial role in supporting hormonal balance, improving insulin sensitivity, and reducing symptoms. This guide reviews the best supplements specifically formulated to address PCOS-related concerns, from irregular cycles to metabolic challenges.
Our Top Picks at a Glance
- Best Overall: Wholesome Story Myo-Inositol & D-Chiro Inositol — optimal 40:1 ratio for PCOS
- Best Value: NusaPure Berberine HCl — powerful insulin sensitizer at great price
- Best Premium: Thorne Research Berberine — pharmaceutical-grade berberine supplement
Quick Comparison
| Product | Key Ingredients | Form | Servings | Best For |
|---|---|---|---|---|
| Wholesome Story Myo & D-Chiro Inositol | Myo-Inositol 2000mg, DCI 50mg | Capsules | 120 | Insulin sensitivity |
| NusaPure Berberine HCl | Berberine 1200mg | Capsules | 200 | Blood sugar support |
| Thorne Research Berberine | Berberine 1000mg | Capsules | 60 | Premium quality |
| SMNutrition DIM & I3C | DIM 100mg, I3C 300mg | Capsules | 60 | Hormone balance |
| Estrohalt Estrogen Blocker | DIM, I3C, Flax Oil | Tablets | 60 | Estrogen metabolism |
| Estroblock PRO Triple Strength | DIM, I3C, Chrysin | Capsules | 60 | Advanced hormone support |
| NOW NAC 1000mg | N-Acetyl Cysteine 1000mg | Tablets | 120 | Antioxidant support |
| Jarrow Formulas N-A-C | NAC 500mg | Capsules | 100 | Liver & immune health |
1. Wholesome Story Myo-Inositol & D-Chiro Inositol — Best Overall
No products found.
This comprehensive PCOS supplement features the research-backed 40:1 ratio of myo-inositol to D-chiro-inositol that studies show is most effective for managing PCOS symptoms.
The formula provides 2000mg of myo-inositol and 50mg of D-chiro-inositol per serving, along with folate and vitamin D3 for additional hormonal and reproductive support. This combination has been shown in clinical studies to improve insulin sensitivity, support regular ovulation, and help reduce symptoms like irregular cycles and hormonal acne.
What We Like
- Optimal 40:1 ratio of MI to DCI backed by research
- Includes folate and vitamin D3 for comprehensive support
- Easy-to-swallow capsules, no unpleasant taste
What Could Be Better
- Requires four capsules per day for full dose
- Higher price point than standalone inositol powders
Bottom Line: The gold standard inositol supplement for PCOS with the ideal ingredient ratio and additional supportive nutrients.
2. NusaPure Berberine HCl 1200mg — Best Value
No products found.
Berberine has shown effects comparable to metformin for improving insulin sensitivity and blood sugar control in women with PCOS, and this high-potency formula delivers excellent value.
Each serving provides 1200mg of berberine HCl, which research shows can help reduce fasting glucose, improve insulin resistance, lower testosterone levels, and support weight management. Studies have found berberine may even be more effective than metformin for some PCOS symptoms while causing fewer side effects.
What We Like
- High potency 1200mg per serving
- 200 capsule bottle provides excellent value
- Supports multiple aspects of PCOS management
What Could Be Better
- May cause digestive upset if not taken with food
- Not recommended during pregnancy or breastfeeding
Bottom Line: A powerful, affordable berberine supplement that addresses insulin resistance and metabolic aspects of PCOS.
3. Thorne Research Berberine-500 — Best Premium
No products found.
Thorne’s pharmaceutical-grade berberine supplement sets the standard for purity and quality, making it ideal for those who want the best berberine available.
This formula provides 500mg of berberine per capsule (1000mg per serving) and is rigorously tested for potency and purity. Thorne is a trusted brand among healthcare practitioners, and their berberine supplement supports healthy blood sugar metabolism, cardiovascular health, and healthy weight management—all important considerations for PCOS.
What We Like
- NSF Certified for Sport and pharmaceutical-grade quality
- Third-party tested for purity and potency
- Trusted by healthcare practitioners
What Could Be Better
- Higher price per serving than other options
- Requires two capsules per serving
Bottom Line: The premium choice for those who prioritize quality and purity in their berberine supplement.
4. SMNutrition DIM & Indole-3-Carbinol — Best for Hormone Balance
- FEATURING I3C: When taking an I3C supplement, I3C gets converted into DIM, boosting the amount of DIM in the body. This promotes hormone balance for women and men by supporting efficient hormone balance.*
- STRONG ESTROGEN BALANCE FORMULA: DIM (diindolylmethane) and I3C Indole-3-Carbinol are found naturally in cruciferous vegetables, like broccoli and cauliflower. They aid in hormone balance by supporting the body’s natural balancing of excess estrogen.* Our DIM I3C also provides powerful antioxidants.
- MAXIMUM SUPPORT FOR MEN AND WOMEN: DIM with I3C gives women's health support for menopause, night sweats, hot flashes, hormonal acne and more. Men use Indole 3 Carbinol with DIM as a strong estrogen blocker to support prostate health, energy, and more.*
- THE BRAND YOU TRUST: SM Nutrition’s best-selling DIM supplement is back with a new ingredient –– Indole-3-Carbinol. This optimized formulation combines DIM 100mg, BioPerine 2.5mg, and Indole-3-Carbinol 300mg to support your hormone balance and overall health.
- PREMIUM FORMULATION: DIM & Indole 3 Carbinol Supplement by SMNutrition is formulated non-GMO, Third-Party Tested, and made in a cGMP manufacturing facility to the highest possible standards.
This dual-action formula combines DIM and I3C to support healthy estrogen metabolism, which can help address hormonal imbalances common in PCOS.
The supplement provides 100mg of DIM (diindolylmethane) and 300mg of indole-3-carbinol, both compounds naturally found in cruciferous vegetables. These ingredients support the body’s natural processing of estrogen and may help reduce symptoms like hormonal acne, breast tenderness, and PMS that often accompany PCOS.
What We Like
- Synergistic combination of DIM and I3C
- Includes BioPerine for enhanced absorption
- Vegan, non-GMO, and third-party tested
What Could Be Better
- May not be suitable for women with low estrogen
- Effects may take 4-6 weeks to notice
Bottom Line: An excellent choice for supporting healthy estrogen metabolism alongside other PCOS supplements.
5. Estrohalt Estrogen Blocker
- BEST ESTROGEN BLOCKER PILLS FOR WOMEN AND MEN. Contains Two Potent Aromatase inhibitors and One Natural Estrogen Blocker in DIM (Diindolylmethane), Indole-3-Carbinol (I3C), and Flax Oil. Blocks estrogen and reduces the conversion of estrogen from testosterone in our bodies.
- CAN HELP ESTROGEN DOMINANCE SO YOU CAN FEEL AND LOOK YOUR BEST. (Vegetarian Friendly Product) Also sugar free, soy free, gluten free, and dairy free. The highest quality estrogen reducer money can buy.
- SUPPORTS ESTROGEN BALANCE; Increased estrogen plays a role causing various side effects. Supports issues such as Menopause, PCOS, and helps in estrogen bloat management. Start with as little as a third of pill; huge bonus over other brands which can cause you harm.
- THE ONLY ESTROGEN REDUCER THAT DOES NOT CONTAIN BIOPERINE as it is not effective and causes side effects. Estrohalt is the best estrogen blocker you can buy because it strong without the unnecessary ingredients which cause side effects like rosacea.
- ESTROHALT CAN HELP REDUCE SIDE EFFECTS COMPARED TO OTHER BRANDS as the tablets can be cut in half with any knife when you start to judge strength. Best Dim Supplements acne pill that actually works. From the makers of Acnetame, Focus Pep, and No-Stim.
Estrohalt provides a unique combination of DIM, I3C, and flax oil to support healthy estrogen balance and reduce symptoms of estrogen dominance.
This formula is designed to help block excess estrogen and reduce conversion from testosterone. The tablets can be split or crushed, allowing you to start with a lower dose and adjust as needed—a flexibility not offered by many competing products.
What We Like
- Tablets can be split for flexible dosing
- Free from BioPerine which some find irritating
- Helps reduce bloating and breast tenderness
What Could Be Better
- Tablet form may be less convenient than capsules
- Takes several weeks to see full effects
Bottom Line: A flexible, well-formulated estrogen blocker that allows you to customize your dosage.
6. Estroblock PRO Triple Strength
- Estrogen Blocker - New Triple Strength Pro-Formula! - A powerful 564 mg of uniquely blended phytochemical nutrients (to assure the best results)
- Anti-Aromatase Inhibitor - Clearance of xenoestrogens from toxic pesticides,Supports healthy estrogen levels through proper estrogen metabolism
- Benefits in women; toxic weight loss, Balanced Energy, symptoms related to Menopause, fights ACNE, PCOS, symptoms related to PMS, Estrogen Dominance
- Benefits in Men; removes toxic weight loss, supports prostate health, Estrogen dominance, supports libido, supports Testosterone production, ACNE
- Nothing is close to Estro Block Pro, the most potent product of anything on the market. It contains no soy, no stearates, no phosphates, no synthetic derivatives, and no animal products.
This advanced formula combines DIM and I3C with additional ingredients like chrysin and wasabi root for comprehensive estrogen metabolism support.
Estroblock PRO is specifically formulated to support healthy hormone balance and may help with hormonal acne, irregular cycles, and other symptoms associated with excess estrogen. The triple-strength formula provides higher doses for those who need more intensive support.
What We Like
- Includes additional ingredients like chrysin and d-glucuronolactone
- Triple-strength formula for more intensive support
- Contains phosphatidyl-choline for liver support
What Could Be Better
- Higher potency may not be needed by everyone
- More expensive than basic DIM supplements
Bottom Line: A comprehensive estrogen metabolism formula for those who need stronger hormone support.
7. NOW Foods NAC 1000mg
No products found.
N-acetyl cysteine (NAC) is a powerful antioxidant that research suggests may be more effective than metformin for improving insulin sensitivity in PCOS.
This high-potency NAC supplement provides 1000mg per tablet and supports multiple aspects of PCOS health, including insulin sensitivity, antioxidant defense, liver health, and immune function. NAC has also been shown to help reduce high testosterone levels and support regular ovulation.
What We Like
- High 1000mg potency per tablet
- Supports multiple PCOS concerns
- Excellent value with 120 tablets
What Could Be Better
- Large tablets may be difficult to swallow
- Strong sulfur smell that some find unpleasant
Bottom Line: A powerful antioxidant supplement that addresses insulin resistance and multiple PCOS symptoms.
8. Jarrow Formulas N-A-C 500mg
- SUSTAIN Bilayer Release Technology
- Glutathione exerts a variety of protective effects
- Detoxification and intracellular defense against oxidativestress
- Substances known to reduce glutathione status are acetaminophen and alcohol
Jarrow’s NAC supplement offers a moderate 500mg dose that’s ideal for those new to NAC or looking to gradually increase their dosage.
This formula provides pharmaceutical-grade N-acetyl cysteine that supports glutathione production, healthy liver function, and immune health. The lower dose allows for flexible dosing and may be better tolerated by those sensitive to higher amounts of NAC.
What We Like
- Moderate 500mg dose for flexible supplementation
- Easier to adjust dosage with smaller capsules
- Supports liver detoxification and immune function
What Could Be Better
- May need to take multiple capsules for therapeutic dose
- Not vegetarian/vegan (contains gelatin)
Bottom Line: A reliable NAC supplement with a moderate dose perfect for those starting NAC supplementation.
How to Choose the Best PCOS Supplement
When selecting supplements for PCOS, consider your specific symptoms and which aspects of the condition you want to address. Inositol supplements are particularly beneficial for insulin resistance and ovulation support, with the 40:1 ratio of myo-inositol to D-chiro-inositol showing the best results in clinical studies. Look for products that provide at least 2000mg of myo-inositol per day.
Berberine is an excellent choice if you’re looking for natural blood sugar support and metabolic benefits. Research shows doses of 1000-1500mg per day are most effective, typically split into 2-3 doses taken with meals. Quality matters with berberine—choose products that specify berberine HCl and are third-party tested for purity.
For hormone balance, DIM and I3C supplements can help your body process estrogen more efficiently. These are especially helpful if you experience hormonal acne, breast tenderness, or PMS symptoms. Start with lower doses and increase gradually, as some women find these supplements very effective while others may not tolerate them as well.
NAC supplements support multiple aspects of PCOS health, from insulin sensitivity to antioxidant protection. Most studies use doses between 600-1800mg per day. If you’re new to NAC, start with 500-600mg and increase gradually to minimize digestive side effects.
Always look for supplements that are third-party tested, free from unnecessary fillers, and made by reputable manufacturers. Consider starting with one supplement at a time so you can assess its effects before adding others to your regimen.
Benefits of PCOS Supplements
The right supplements can provide significant benefits for managing PCOS symptoms and underlying metabolic issues. Inositol supplements have been shown to improve insulin sensitivity, support regular ovulation, and help regulate menstrual cycles. Studies demonstrate that women taking myo-inositol experience improvements in egg quality, reduced testosterone levels, and better fertility outcomes.
Berberine offers powerful metabolic support, with research showing it can lower fasting glucose levels, improve insulin resistance, and support healthy cholesterol levels. Unlike pharmaceutical options, berberine tends to cause fewer side effects while providing comparable benefits for blood sugar control. It may also help with weight management, which is often challenging for women with PCOS.
Antioxidant supplements like NAC provide crucial support for reducing oxidative stress and inflammation, both of which are elevated in PCOS. NAC helps your body produce glutathione, one of the most important antioxidants for cellular health. This can lead to improvements in insulin sensitivity, hormone balance, and overall metabolic function.
Hormone-balancing supplements like DIM and I3C support healthy estrogen metabolism, which can help reduce symptoms of estrogen dominance such as bloating, breast tenderness, and hormonal acne. These compounds help your body break down estrogen into beneficial metabolites rather than potentially harmful ones, promoting better overall hormonal balance.
Frequently Asked Questions
What is the best supplement for PCOS and irregular periods?
Myo-inositol combined with D-chiro-inositol in a 40:1 ratio is considered the best supplement for regulating periods in PCOS. Studies show that 2000-4000mg of myo-inositol daily can help restore regular ovulation and menstrual cycles. Vitex (chasteberry) is another supplement that can support menstrual regularity by influencing progesterone production.
Can I take berberine and inositol together for PCOS?
Yes, many women take berberine and inositol together as they work through different mechanisms to support PCOS management. Inositol primarily improves insulin signaling, while berberine affects glucose metabolism and has anti-inflammatory properties. However, start with one supplement at a time and consult your healthcare provider before combining them, especially if you’re taking other medications.
How long does it take for PCOS supplements to work?
Most women begin noticing improvements within 2-3 months of consistent supplementation, though some benefits may appear sooner. Metabolic improvements like better blood sugar control can occur within 4-6 weeks, while hormonal changes affecting cycle regularity may take 3-4 months. For best results, plan to take supplements consistently for at least 3-6 months before fully assessing their effectiveness.
Should I take NAC or berberine for PCOS?
Both NAC and berberine are beneficial for PCOS but work differently. NAC is primarily an antioxidant that supports liver health and glutathione production while also improving insulin sensitivity. Berberine is more directly focused on blood sugar control and metabolic function. If you have significant insulin resistance or elevated blood sugar, berberine may be more helpful. For antioxidant support and liver health, NAC is excellent. Some women benefit from taking both.
Are DIM supplements safe for PCOS?
DIM supplements are generally safe for PCOS when taken at recommended doses (100-300mg daily), though they’re not appropriate for everyone. They work best for women with symptoms of estrogen dominance such as breast tenderness, heavy periods, or hormonal acne. Women with low estrogen levels or those trying to conceive should consult their healthcare provider before taking DIM, as it affects estrogen metabolism.
Can supplements replace metformin for PCOS?
While supplements like berberine and inositol have shown effects comparable to metformin in some studies, they should not replace prescribed medication without consulting your doctor. Many women successfully use supplements either alongside metformin or as an alternative when metformin is not well-tolerated. Work with your healthcare provider to determine the best treatment approach for your individual situation.
What’s the difference between myo-inositol and D-chiro-inositol?
Myo-inositol and D-chiro-inositol are two forms of inositol that work differently in the body. Myo-inositol is the primary form needed for insulin signaling and is especially important for ovarian function. D-chiro-inositol works more on blood sugar regulation and androgen metabolism. The ideal ratio is 40:1 myo to D-chiro, as this mimics the natural ratio in the body and has shown the best results in PCOS studies.
Should I take PCOS supplements on an empty stomach or with food?
Most PCOS supplements are better tolerated and absorbed when taken with food. Berberine should always be taken with meals to maximize its blood sugar benefits and minimize digestive upset. Inositol can be taken with or without food, though taking it with meals may reduce any mild nausea. NAC is best taken on an empty stomach for optimal absorption, but can be taken with food if it causes stomach discomfort.
