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Metformin for Insulin Resistance and PCOS

When insulin resistance is driving symptoms like stubborn weight gain, cravings, fatigue, or irregular cycles, Metformin may help your body respond to insulin more effectively and stabilize blood sugar over time.
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Restore balance, protect your future

Improves insulin sensitivity
Weight management as a secondary effect
Supports metabolic energy
Helps PCOS-related symptoms

Improves insulin sensitivity

Weight management as a secondary effect
Supports metabolic energy
Helps PCOS-related symptoms

What is metformin and how does it help?

Metformin is a widely used medication that helps regulate how your body handles glucose and insulin so your metabolism can work more smoothly.

Think of Metformin as a metabolism helper. Your body is constantly managing sugar (glucose) for energy. When that system isn’t working properly, glucose stays in your bloodstream instead of entering your cells where it belongs. This can leave you feeling tired, foggy, hungry, and more prone to storing fat.

Metformin helps reduce excess glucose production in the liver and improves how your cells respond to insulin, allowing glucose to move out of the bloodstream and be used for energy.

For women with PCOS, this matters because higher insulin levels can stimulate the ovaries to produce more androgens such as testosterone, which may disrupt cycles and contribute to acne or excess hair growth. By improving insulin balance, Metformin may help reduce this hormonal disruption and support more regular cycles and metabolic stability for some women.
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Metformin treatment options

Metformin is prescribed orally and introduced gradually so your body has time to adjust. Extended-release formulations may be used when appropriate to improve comfort and tolerance.

At Fem Excel, Metformin is always part of a personalized treatment plan guided by your symptoms, lab results, and overall health, with ongoing provider oversight and monitoring.

Benefits of metformin for women

Insulin resistance and metabolic health

Metformin improves insulin sensitivity and reduces excess glucose release from the liver, supporting healthier blood sugar patterns over time.

Weight challenges linked to insulin

Metformin is not a weight loss drug, but by improving insulin sensitivity, it may help make existing nutrition and activity efforts more effective for some women.

Energy and cravings

More stable glucose levels can reduce energy crashes and intense carbohydrate cravings.

Hormone balance support

Lower insulin levels can reduce ovarian androgen production, helping improve hormone-related symptoms such as acne, hair changes, or cycle irregularity in insulin-sensitive women.

Cycle regularity in PCOS

In women with PCOS and insulin resistance, Metformin has been shown to support improved menstrual cyclicity and ovulation when used over several months.

Long-term metabolic health

Early treatment of insulin resistance may reduce progression toward type 2 diabetes and other metabolic complications as part of a broader care strategy.

How it works

Our in-house team specializes in hormone optimization and takes the time to understand your symptoms, goals, and history. Doctor-led hormone therapy is the key to real symptom relief, healthy aging, and results that last.

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Start with your story.
Share your symptoms and health history through our online assessment.

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Meet your hormone expert.
Connect online with a licensed provider to discuss your symptoms and goals. If prescribed, treatment can start right away.
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Fem Excel At-Home Hormone Test Kit
Get deeper insights.
After your consult, we’ll send you a simple at-home hormone test kit to measure key biomarkers and fine-tune your care.
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Fem Excel Estradiol Medications
Personalized, ongoing support.

Once your lab results are in, your provider will review your progress and adjust your treatment as needed. We check in every 60 days, and you’ll receive comprehensive blood tests every six months to keep your care truly personalized.


Thousands of women are already experiencing the benefits.
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85%
report improvement within 2 months*
96%
report improvement within 6 months*
100,000+ patients treated*
Among America’s fastest-growing companies. Voted Top Hormone Provider of 2024 and Hormone Provider of the Year 2025.
*Data taken from 32,795 members responding to symptoms reviews with their Excel Medical providers

Related symptoms

Irregular ovulation in PCOS

If your periods are unpredictable, missing, or you’re not ovulating regularly, PCOS may be the cause. We address the hormonal root cause to help restore natural cycles, improve fertility, and bring your body back into balance.

PCOS weight gain and insulin resistance

If you are gaining weight, especially around your middle, despite eating well and staying active, it may be due to insulin resistance. We address this using hormone therapy, thyroid support, and insulin-sensitizing treatment options.

PCOS-related acne and oily skin

Hormonal breakouts along your chin and jawline are often caused by elevated androgens. We use proven anti-androgen treatments like spironolactone and hormone balance to clear your skin from the inside out.

Excess facial or body hair (hirsutism)

Unwanted hair on your chin, chest, stomach, or back is one of the most frustrating signs of PCOS. We reduce hair growth by lowering androgens and supporting balance with spironolactone and targeted hormone therapy.

All symptoms
If your periods are unpredictable, missing, or you’re not ovulating regularly, PCOS may be the cause. We address the hormonal root cause to help restore natural cycles, improve fertility, and bring your body back into balance.
If you are gaining weight, especially around your middle, despite eating well and staying active, it may be due to insulin resistance. We address this using hormone therapy, thyroid support, and insulin-sensitizing treatment options.
Hormonal breakouts along your chin and jawline are often caused by elevated androgens. We use proven anti-androgen treatments like spironolactone and hormone balance to clear your skin from the inside out.
Unwanted hair on your chin, chest, stomach, or back is one of the most frustrating signs of PCOS. We reduce hair growth by lowering androgens and supporting balance with spironolactone and targeted hormone therapy.

The Excel Advantage™ membership

$99/month

Get dedicated physician support, regular monitoring, and personalized adjustments so your hormone therapy evolves with you.

  • Access to all treatments
  • Begin care within days
In-house specialists
Trained directly in the Excel Advantage™ protocol.
Integrated treatment
Hormones, metabolic support, and advanced therapies.
Symptom-driven care
Treatment guided by symptoms, not lab numbers alone.
Member access & pricing
Access to advanced treatments with preferred pricing.
Precision monitoring
Regular labs with personalized treatment adjustments.
60-day follow-ups
Provider reviews to refine and optimize treatment.
No commitment required • Cancel anytime • Medications not included

Medically Reviewed

This page was medically reviewed by Peter Fotinos, MD, Chief Medical Officer, and Lorna A. Brudie, DO, FACOG, FACS, Medical Director, Excel Medical. Dr Fotinos and Dr Brudie have nearly 50 years of combined clinical experience in hormone optimization and preventive medicine.
Last reviewed: October 2025
Teal seal: Medically Reviewed by Excel Medical Clinical Team on 22/01/2026.

References

  1. Knowler WC, Barrett-Connor E, Fowler SE, et al. Reduction in the incidence of type 2 diabetes with lifestyle intervention or metformin. N Engl J Med. 2002;346(6):393-403.
DOI: https://doi.org/10.1056/NEJMoa012512
PubMed: https://pubmed.ncbi.nlm.nih.gov/11832527/
  2. Diabetes Prevention Program Research Group. Long-term effects of metformin on diabetes prevention: identification of subgroups that benefited most in the Diabetes Prevention Program and Diabetes Prevention Program Outcomes Study. Diabetes Care. 2019;42(4):601-608.
DOI: https://doi.org/10.2337/dc18-1970
PubMed: https://pubmed.ncbi.nlm.nih.gov/30808692/
  3. Diabetes Prevention Program Research Group. Long-term effects of lifestyle intervention or metformin on diabetes development and microvascular complications over 15-year follow-up: the Diabetes Prevention Program Outcomes Study. Lancet Diabetes Endocrinol. 2015;3(11):866-875.
DOI: https://doi.org/10.1016/S2213-8587(15)00291-0
PubMed: https://pubmed.ncbi.nlm.nih.gov/26377054/
  4. UK Prospective Diabetes Study (UKPDS) Group. Effect of intensive blood-glucose control with metformin on complications in overweight patients with type 2 diabetes (UKPDS 34). Lancet. 1998;352(9131):854-865.
DOI: https://doi.org/10.1016/S0140-6736(98)07037-8
PubMed: https://pubmed.ncbi.nlm.nih.gov/9742977/
  5. Holman RR, Paul SK, Bethel MA, Matthews DR, Neil HA. 10-year follow-up of intensive glucose control in type 2 diabetes. N Engl J Med. 2008;359(15):1577-1589.
DOI: https://doi.org/10.1056/NEJMoa0806470
PubMed: https://pubmed.ncbi.nlm.nih.gov/18784090/
  6. Diabetes Prevention Program Research Group. Long-term safety, tolerability, and weight loss associated with metformin in the Diabetes Prevention Program Outcomes Study. Diabetes Care. 2012;35(4):731-737.
DOI: https://doi.org/10.2337/dc11-1299
PubMed: https://pubmed.ncbi.nlm.nih.gov/22432137/
  7. Malin SK, Kashyap SR. Effects of metformin on weight loss: potential mechanisms. Curr Opin Endocrinol Diabetes Obes. 2014;21(5):323-329.
DOI: https://doi.org/10.1097/MED.0000000000000095
PubMed: https://pubmed.ncbi.nlm.nih.gov/25105998/
  8. Haber R, Zarzour F, Ghezzawi M, et al. The impact of metformin on weight and metabolic parameters in patients with obesity: a systematic review and meta-analysis of randomized controlled trials. Diabetes Obes Metab. 2024;26(5):1850-1867.
DOI: https://doi.org/10.1111/dom.15501
PubMed: https://pubmed.ncbi.nlm.nih.gov/38312345/
  9. Seifarth C, Schehler B, Schneider HJ. Effectiveness of metformin on weight loss in non-diabetic individuals with obesity. Exp Clin Endocrinol Diabetes. 2013;121(1):27-31.
DOI: https://doi.org/10.1055/s-0032-1327734
PubMed: https://pubmed.ncbi.nlm.nih.gov/23179869/
  10. Barzilai N, Crandall JP, Kritchevsky SB, Espeland MA. Metformin as a tool to target aging. Cell Metab. 2016;23(6):1060-1065.
DOI: https://doi.org/10.1016/j.cmet.2016.05.011
PubMed: https://pubmed.ncbi.nlm.nih.gov/27304507/
  11. Kulkarni AS, Gubbi S, Barzilai N. Benefits of metformin in attenuating the hallmarks of aging. Cell Metab. 2020;32(1):15-30.
DOI: https://doi.org/10.1016/j.cmet.2020.04.001
PubMed: https://pubmed.ncbi.nlm.nih.gov/32333835/
  12. Justice JN, Ferrucci L, Newman AB, et al. A framework for selection of blood-based biomarkers for geroscience-guided clinical trials: report from the TAME Biomarkers Workgroup. Geroscience. 2018;40(5-6):419-436.
DOI: https://doi.org/10.1007/s11357-018-0042-y
PubMed: https://pubmed.ncbi.nlm.nih.gov/30288573/
  13. Konopka AR, Laurin JL, Schoenberg HM, et al. Metformin inhibits mitochondrial adaptations to aerobic exercise training in older adults. Aging Cell. 2019;18(1):e12880.
DOI: https://doi.org/10.1111/acel.12880
PubMed: https://pubmed.ncbi.nlm.nih.gov/30556311/
  14. Campbell JM, Bellman SM, Stephenson MD, Lisy K. Metformin reduces all-cause mortality and diseases of ageing independent of its effect on diabetes control: a systematic review and meta-analysis. Ageing Res Rev. 2017;40:31-44.
DOI: https://doi.org/10.1016/j.arr.2017.08.003
PubMed: https://pubmed.ncbi.nlm.nih.gov/28802803/

Frequently asked questions

More FAQ
Yes. Metformin is widely used to improve insulin resistance by making tissues more responsive to insulin and reducing excess glucose output from the liver.¹³
Metformin is not a weight loss drug. By improving insulin sensitivity, it may help some women see more stable or gradual weight changes when combined with nutrition and activity.²⁶
Metformin has been used for decades and is considered safe for most women when prescribed and monitored by a medical provider.¹³

Digestive symptoms such as nausea, bloating, loose stools, or stomach discomfort are most common when starting Metformin. Beginning gradually, taking it with food, and using extended-release formulations can improve tolerance.⁷

Some women notice changes in energy or cravings within weeks, while shifts in weight, lab markers, or cycles can take several months. Metformin is intended for long-term metabolic support.

In women with PCOS and insulin resistance, Metformin has been shown to support menstrual regularity and ovulation over time.⁴⁵

Yes. Metformin can be used alongside bioidentical hormone therapy. Your provider reviews all medications and hormones to ensure combinations are appropriate and monitored.
More FAQ