Polycystic Ovary Syndrome (PCOS)

Polycystic ovary syndrome (PCOS) is a hormone disorder that is common among women of reproductive age. PCOS is often caused by high androgen levels and frequently involves infertility, cysts on the ovaries, and metabolic abnormalities.

Quick Answer

What it is

Polycystic ovary syndrome (PCOS) is a hormone disorder that is common among women of reproductive age. PCOS is often caused by high androgen levels and frequently involves infertility, cysts on the ovaries, and metabolic abnormalities.

Key findings

  • Grade B: Blood glucose (N-Acetylcysteine)
  • Grade B: Apolipoprotein B (Berberine)
  • Grade C: Acne Symptoms (Chromium)

Safety

No specific caution or interaction language was detected in the current summary/outcome notes.

ℹ️ Quick Facts

Quick Facts: Polycystic Ovary Syndrome (PCOS)

  • Supplements Studied:17
  • Research Trials:26
  • Total Participants:22,316
  • Top Supplement:Inositol (B)
26 trials
22,316 ppts
17 supps · 220 outcomes

Evidence-Based Protocol

Supplement stack ranked by research quality

Strong Evidence

Primary Stack (Tier 1)

2-4g myo-inositol + 50-100mg D-chiro-inositol daily (40:1 ratio)

Acts as insulin signaling second messenger, improving insulin sensitivity, restoring ovulation, and reducing androgens

40 studies | 3,000 participants
500mg 2-3x daily with meals

Activates AMPK to improve insulin sensitivity, reduces androgens, and regulates menstrual cycles comparable to metformin

15 studies | 1,200 participants

Supporting Stack (Tier 2)

600-1800mg daily

Antioxidant that improves insulin sensitivity, reduces androgens, and enhances ovulation rates

15 studies | 1,000 participants
2000-4000 IU daily (target 40-60 ng/mL)

Deficiency is prevalent in PCOS; supplementation improves insulin sensitivity, menstrual regularity, and fertility

20 studies | 1,500 participants
2-4g EPA/DHA daily

Reduces inflammation, improves lipid profile, and may reduce androgen levels in PCOS

12 studies | 600 participants
200-1000mcg daily (as chromium picolinate)

Enhances insulin receptor sensitivity, potentially improving metabolic and reproductive parameters

10 studies | 500 participants
100-200mg daily

Antioxidant that may improve glucose metabolism, blood pressure, and cholesterol in PCOS

8 studies | 400 participants

How It Works

Polycystic ovary syndrome (PCOS) is the most common hormonal disorder in women of reproductive age, affecting 6-12% of women. It's characterized by irregular periods, excess androgen ('male hormones'), and polycystic ovaries. The underlying problem is usually insulin resistance—when your cells don't respond well to insulin, your pancreas produces more, and high insulin stimulates the ovaries to make more testosterone. This protocol targets insulin resistance and its downstream hormonal effects.

•Inositol is the most evidence-based supplement for PCOS. Myo-inositol and D-chiro-inositol are naturally occurring compounds that act as 'second messengers' in insulin signaling—they help insulin work more effectively. Studies show inositol can restore ovulation, lower testosterone, improve egg quality, and reduce acne and hirsutism. The combination of myo-inositol and D-chiro-inositol in a 40:1 ratio (mimicking the body's natural ratio) appears most effective.
•Berberine is remarkably effective for PCOS—head-to-head studies show it works as well as metformin (the most commonly prescribed PCOS medication) for improving insulin sensitivity and reducing androgens. It activates AMPK, the same pathway targeted by metformin. Berberine can regulate menstrual cycles, reduce testosterone, and improve metabolic markers. Some women tolerate it better than metformin.
•N-Acetylcysteine (NAC) is a powerful antioxidant that increases glutathione, your body's master antioxidant. In PCOS, oxidative stress contributes to insulin resistance and ovarian dysfunction. NAC improves insulin sensitivity, reduces androgen levels, and may enhance ovulation rates. It's been studied as an alternative to metformin with comparable results in some trials.
•Vitamin D deficiency is extremely common in PCOS (67-85% of women) and correlates with worse insulin resistance and metabolic profiles. Supplementation can improve insulin sensitivity, reduce inflammation, and may improve menstrual regularity and fertility. Get your levels tested and aim for 40-60 ng/mL.
•Omega-3 Fatty Acids reduce the chronic low-grade inflammation seen in PCOS and improve lipid profiles. They may also have modest effects on reducing androgens and improving insulin sensitivity.
•Chromium enhances insulin receptor function, and some studies show it can improve glucose tolerance and reduce testosterone in PCOS. Effects are modest but may complement other interventions.
•Coenzyme Q10 is an antioxidant that may improve various metabolic parameters in PCOS, including glucose metabolism and lipid profiles.

Expected timeline: Metabolic improvements (fasting glucose, insulin) may be seen in 4-8 weeks. Menstrual regularity often improves within 2-3 cycles (2-3 months). Improvements in acne and hirsutism take longer (3-6 months). Weight loss and lifestyle changes enhance all supplement effects.

Generated from peer-reviewed researchSchema v2.0

Supplements for Polycystic Ovary Syndrome (PCOS)

Sorted by strength of evidence

BInositol
2
↓Blood glucoseImproves↓Acne SymptomsImproves↑TestosteroneImproves
BN-Acetylcysteine
1
↓Blood glucoseImproves↓Body Mass Index (BMI)Improves↑Endometrial ThicknessImproves
BBerberine
1
↓Apolipoprotein BImproves↓TriglyceridesImproves↓Low-density lipoprotein (LDL)Improves
BCurcumin
1
↓Blood glucoseImproves↑InsulinWorsens↓Body Mass Index (BMI)Improves
CCoenzyme Q10
1
↓Blood glucoseImproves↑TestosteroneImproves↑ProgesteroneImproves
CChromium
1
↓Acne SymptomsImproves↑Glutathione (GSH)Improves↓C-Reactive Protein (CRP)Improves
CVitamin D
1
↓Blood glucoseImproves↑High-density lipoprotein (HDL)Improves↑InsulinWorsens
CCinnamon
1
↓Blood glucoseImproves↓Insulin ResistanceImproves↑InsulinWorsens
CResveratrol
1
↓Acne SymptomsImproves↓Body Mass Index (BMI)Improves↓WeightImproves
CL-Carnitine
1
Atherosclerotic Signs↓Body Mass Index (BMI)Improves↑InsulinWorsens
DFish Oil
1
Adiponectin↑Glycemic ControlImproves↓Blood glucoseImproves
DGreen Tea Extract
1
Body Fat↓WeightImproves↓Body Mass Index (BMI)Improves
DFennel
1
Infant Growth
DMagnesium
1
Acne Symptoms↓Blood glucoseImproves↓Body Mass Index (BMI)Improves
DAlpha-Linolenic Acid (ALA)
1
Adiponectin↑Apolipoprotein BWorsens↑Blood glucoseWorsens
DResistant Starch
1
C-Reactive Protein (CRP)↓Interleukin 6Improves↓Oxidative Stress BiomarkersImproves

Detailed Outcomes

Grade:
Effect:
Size:
Sort:
|
B
Blood glucose
Small Improvement
11 studies
small↓Improves
?
Body Mass Index (BMI)
11 studies
↓Improves
?
Endometrial Thickness
11 studies
↑Improves
?
Estrogen
8 studies
↑Worsens
?
Luteinizing Hormone
8 studies
↑Improves
?
Weight
7 studies
↓Improves
?
Follicle-Stimulating Hormone
6 studies
↑Improves
?
Testosterone
6 studies
↑Improves
?
Progesterone
5 studies
↑Improves
?
High-density lipoprotein (HDL)
4 studies
↑Improves
?
Low-density lipoprotein (LDL)
4 studies
↓Improves
?
Sex Hormone Binding Globulin
4 studies
↑Improves
?
Total cholesterol
4 studies
↓Improves
?
Triglycerides
4 studies
↓Improves
B
Blood glucose
Small Improvement
8 studies
small↓Improves
?
Insulin
8 studies
↑Worsens
?
Body Mass Index (BMI)
7 studies
↓Improves
?
Total cholesterol
6 studies
↓Improves
?
Triglycerides
6 studies
↓Improves
?
DHEAS
3 studies
↑Improves
?
Follicle-Stimulating Hormone
3 studies
↑Improves
?
Luteinizing Hormone
3 studies
↑Improves
?
Weight
3 studies
↓Improves
?
Testosterone
2 studies
↑Improves
?
High-density lipoprotein (HDL)
1 study
↑Improves
?
Insulin Resistance
1 study
↓Improves
?
Low-density lipoprotein (LDL)
1 study
↓Improves
B
Apolipoprotein B
Small Improvement
2 studies
small↓Improves
?
Triglycerides
38 studies
↓Improves
?
Low-density lipoprotein (LDL)
35 studies
↓Improves
?
High-density lipoprotein (HDL)
34 studies
↑Improves
?
Total cholesterol
28 studies
↓Improves
?
HbA1c
21 studies
↓Improves
?
Blood Pressure
20 studies
↓Improves
?
Insulin
16 studies
↑Worsens
?
Insulin Resistance
14 studies
↓Improves
?
Luteinizing Hormone
8 studies
↑Improves
?
Testosterone
8 studies
↑Improves
?
Body Mass Index (BMI)
7 studies
↓Improves
?
Follicle-Stimulating Hormone
7 studies
↑Improves
?
Waist-Hip Ratio
5 studies
↑Improves
?
Sex Hormone Binding Globulin
3 studies
↑Improves
?
Blood glucose
2 studies
↓Improves
?
Fertility
2 studies
↑Improves
B
Blood glucose
Small Improvement
2 studies
small↓Improves
C
Acne Symptoms
Moderate Improvement
1 study
moderate↓Improves
?
Testosterone
18 studies
↑Improves
?
PCOS Symptoms
10 studies
↓Improves
?
Body Mass Index (BMI)
8 studies
↓Improves
?
Glycemic Control
8 studies
↑Improves
?
Pregnancy Complications
4 studies
↑Improves
?
Weight
4 studies
↓Improves
?
Blood Pressure
3 studies
↓Improves
?
Fertility
3 studies
↑Improves
?
High-density lipoprotein (HDL)
2 studies
↑Improves
?
Insulin
2 studies
↑Worsens
?
Low-density lipoprotein (LDL)
2 studies
↓Improves
?
Oocyte Quality
2 studies
↑Improves
?
Ovulation
2 studies
↑Improves
?
Total cholesterol
2 studies
↓Improves
?
Triglycerides
2 studies
↓Improves
?
Excessive Hair Growth
1 study
↑Improves
?
Gestational Diabetes Risk
1 study
↑Worsens
?
Oocyte Quantity
1 study
↑Improves
?
Oxidative Stress Biomarkers
1 study
↓Improves
C
Blood glucose
Small Improvement
1 study
small↓Improves
?
Testosterone
5 studies
↑Improves
?
Progesterone
4 studies
↑Improves
?
Insulin Resistance
3 studies
↓Improves
?
Luteinizing Hormone
3 studies
↑Improves
?
Estrogen
2 studies
↑Worsens
?
Follicle-Stimulating Hormone
2 studies
↑Improves
?
High-density lipoprotein (HDL)
2 studies
↑Improves
?
Low-density lipoprotein (LDL)
2 studies
↓Improves
?
Total cholesterol
2 studies
↓Improves
?
Triglycerides
2 studies
↓Improves
?
Glycemic Control
1 study
↑Improves
?
Insulin
1 study
↑Worsens
?
Sex Hormone Binding Globulin
1 study
↑Improves
C
Acne Symptoms
Small Improvement
1 study
small↓Improves
?
Glutathione (GSH)
9 studies
↑Improves
?
C-Reactive Protein (CRP)
8 studies
↓Improves
?
Total Antioxidant Capacity (TAC)
8 studies
↑Improves
?
Free Testosterone
5 studies
↑Improves
?
Insulin
5 studies
↑Worsens
?
Superoxide Dismutase Activity
5 studies
↑Improves
?
TNF-Alpha
5 studies
↓Improves
?
Blood glucose
4 studies
↓Improves
?
Oxidative Stress Biomarkers
4 studies
↓Improves
?
Body Mass Index (BMI)
3 studies
↓Improves
?
Excessive Hair Growth
3 studies
↑Improves
?
Interleukin 6
3 studies
↓Improves
?
Luteinizing Hormone
3 studies
↑Improves
?
Follicle-Stimulating Hormone
2 studies
↑Improves
?
Glycemic Control
2 studies
↑Improves
?
Serum DHEA
2 studies
↑Improves
?
High-density lipoprotein (HDL)
1 study
↑Improves
?
Low-density lipoprotein (LDL)
1 study
↓Improves
?
Progesterone
1 study
↑Improves
?
Prolactin
1 study
↑Improves
?
Sex Hormone Binding Globulin
1 study
↑Improves
?
Testosterone
1 study
↑Improves
?
Total cholesterol
1 study
↓Improves
?
Triglycerides
1 study
↓Improves
?
vLDL-C
1 study
↓Improves
?
Weight
1 study
↓Improves
C
Blood glucose
Small Improvement
1 study
small↓Improves
?
High-density lipoprotein (HDL)
1 study
↑Improves
?
Insulin
1 study
↑Worsens
?
Low-density lipoprotein (LDL)
1 study
↓Improves
?
Total cholesterol
1 study
↓Improves
?
Triglycerides
1 study
↓Improves
?
vLDL-C
1 study
↓Improves
C
Blood glucose
Small Improvement
1 study
small↓Improves
?
Insulin Resistance
5 studies
↓Improves
?
Insulin
2 studies
↑Worsens
C
Acne Symptoms
Moderate Improvement
1 study
moderate↓Improves
?
Body Mass Index (BMI)
25 studies
↓Improves
?
Weight
23 studies
↓Improves
?
Blood Urea Nitrogen (BUN)
17 studies
↑Improves
?
Waist circumference
11 studies
↓Improves
?
Serum Albumin
10 studies
↑Improves
?
Body Fat
8 studies
↓Improves
?
Uric Acid
4 studies
↓Improves
?
C-Reactive Protein (CRP)
3 studies
↓Improves
?
Follicle-Stimulating Hormone
3 studies
↑Improves
?
Kidney Function
3 studies
↑Improves
?
Luteinizing Hormone
3 studies
↑Improves
?
Testosterone
3 studies
↑Improves
?
DHEAS
2 studies
↑Improves
?
Prolactin
2 studies
↑Improves
?
Sex Hormone Binding Globulin
2 studies
↑Improves
?
Thyroid-Stimulating Hormone
2 studies
↑Improves
?
Total cholesterol
2 studies
↓Improves
?
Excessive Hair Growth
1 study
↑Improves
?
Fertility
1 study
↑Improves
?
High-density lipoprotein (HDL)
1 study
↑Improves
?
Intercellular Adhesion Molecule 1
1 study
↑Worsens
?
Low-density lipoprotein (LDL)
1 study
↓Improves
?
Plasminogen Inhibitor-1
1 study
↑Improves
?
Triglycerides
1 study
↓Improves
?
Vascular Function
1 study
↑Improves
C
Atherosclerotic Signs
Mixed effect
1 study
?
Body Mass Index (BMI)
3 studies
↓Improves
?
Insulin
2 studies
↑Worsens
?
Insulin Resistance
2 studies
↓Improves
?
Low-density lipoprotein (LDL)
2 studies
↓Improves
?
Total cholesterol
2 studies
↓Improves
?
Triglycerides
2 studies
↓Improves
?
Beta-cell function
1 study
↑Improves
?
Blood glucose
1 study
↓Improves
?
C-Reactive Protein (CRP)
1 study
↓Improves
?
DHEAS
1 study
↑Improves
?
Free Testosterone
1 study
↑Improves
?
Glycemic Control
1 study
↑Improves
?
High-density lipoprotein (HDL)
1 study
↑Improves
?
Nitric Oxide
1 study
↑Improves
?
vLDL-C
1 study
↓Improves
D
Body Fat
No effect
2 studies
none
?
Weight
4 studies
↓Improves
?
Body Mass Index (BMI)
3 studies
↓Improves
?
Waist-Hip Ratio
3 studies
↑Improves
?
Food Intake
2 studies
↑Worsens
?
Waist circumference
2 studies
↓Improves
D
Adiponectin
No effect
1 study
none
?
Glycemic Control
2 studies
↑Improves
?
Blood glucose
1 study
↓Improves
?
C-Reactive Protein (CRP)
1 study
↓Improves
?
HbA1c
1 study
↓Improves
?
Insulin
1 study
↑Worsens
?
Leptin
1 study
↑Improves
?
Serum DHEA
1 study
↑Improves
?
Sex Hormone Binding Globulin
1 study
↑Improves
?
Testosterone
1 study
↑Improves
?
Triglycerides
1 study
↓Improves
D
Infant Growth
No effect
1 study
none
D
Acne Symptoms
No effect
1 study
none
?
Blood glucose
3 studies
↓Improves
?
Body Mass Index (BMI)
3 studies
↓Improves
?
High-density lipoprotein (HDL)
3 studies
↑Improves
?
Insulin
3 studies
↑Worsens
?
Insulin Resistance
3 studies
↓Improves
?
Low-density lipoprotein (LDL)
3 studies
↓Improves
?
Testosterone
3 studies
↑Improves
?
Total cholesterol
3 studies
↓Improves
?
Triglycerides
3 studies
↓Improves
?
Waist circumference
3 studies
↓Improves
?
Weight
3 studies
↓Improves
?
Blood Pressure
2 studies
↓Improves
?
Serum Magnesium
2 studies
↑Improves
?
Sex Hormone Binding Globulin
2 studies
↑Improves
?
C-Reactive Protein (CRP)
1 study
↓Improves
?
Hair Regrowth
1 study
↑Improves
?
Luteinizing Hormone
1 study
↑Improves
?
Oxidative Stress Biomarkers
1 study
↓Improves
?
Progesterone
1 study
↑Improves
?
Quality of Life
1 study
↑Improves
?
Serum DHEA
1 study
↑Improves
?
Sleep Quality
1 study
↑Improves
?
TNF-Alpha
1 study
↓Improves
?
Total Antioxidant Capacity (TAC)
1 study
↑Improves
D
Adiponectin
No effect on adiponectin
1 study
none
?
Apolipoprotein B
1 study
↑Worsens
?
Blood glucose
1 study
↑Worsens
?
C-Reactive Protein (CRP)
1 study
↑Worsens
?
HbA1c
1 study
↑Worsens
?
High-density lipoprotein (HDL)
1 study
↑Improves
?
Insulin
1 study
↑Worsens
?
Insulin Resistance
1 study
↑Worsens
?
Leptin
1 study
↑Improves
?
Low-density lipoprotein (LDL)
1 study
↑Worsens
?
Total cholesterol
1 study
↑Worsens
?
Triglycerides
1 study
↑Worsens
D
C-Reactive Protein (CRP)
No effect
1 study
none
?
Interleukin 6
1 study
↓Improves
?
Oxidative Stress Biomarkers
1 study
↓Improves
?
Superoxide Dismutase Activity
1 study
↑Improves
?
TNF-Alpha
1 study
↓Improves
?
Total Antioxidant Capacity (TAC)
1 study
↑Improves
?
Body Mass Index (BMI)
1 study
↓Improves

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