Vitamin D Supplements for PCOS: Why You Need Them
In this post we are going over Vitamin D Supplements for PCOS , benefits , recommendations and more.
Turns out, Vitamin D deficiency is super common in women with PCOS, and it’s linked to everything from insulin resistance to mood swings. And let’s be real—most of us aren’t spending enough time in the sun to get what we need naturally. That’s where Vitamin D supplements for PCOS come in!
In this post, I’ll break down why Vitamin D is crucial for managing PCOS, what happens when you’re deficient, and the best Vitamin D supplements you can grab on Amazon today.
Why Vitamin D is a Game-Changer for PCOS
Vitamin D isn’t just important for strong bones—it plays a key role in hormone regulation, insulin sensitivity, and even mental health.
According to the publication Nutrients, women with PCOS are more likely to be deficient in Vitamin D, and this deficiency has been linked to worsened insulin resistance, higher testosterone levels, and increased inflammation (source).
Here’s what Vitamin D can do for PCOS:
Improves insulin sensitivity – Vitamin D helps your body use insulin more effectively, reducing the risk of Type 2 diabetes. (Journal of Clinical Endocrinology & Metabolism found that supplementing with Vitamin D improved insulin resistance in PCOS women.) (source)
Regulates menstrual cycles – Low Vitamin D has been linked to irregular periods. Getting enough can help regulate your cycle.
Supports fertility – If you’re trying to conceive, Vitamin D may boost ovarian function and egg quality. (European Journal of Endocrinology suggests it plays a role in ovulation.) (source)
Reduces inflammation – Chronic inflammation is a major issue for women with PCOS, and Vitamin D has anti-inflammatory properties.
Boosts mood & mental health – Ever feel like PCOS comes with a free side of anxiety and depression? Low Vitamin D might be part of the problem. Studies show that Vitamin D supplementation can help improve mood and reduce symptoms of depression. (source)
What Happens When You’re Deficient?
If you’re low on Vitamin D, you might experience:
Increased insulin resistance – Making it harder to lose weight and easier to gain.
Worsened hormonal imbalance – Higher testosterone levels = more acne, hair loss, and irregular cycles.
Fatigue & muscle weakness – No matter how much you sleep, you feel exhausted.
Mood swings & depression – Vitamin D plays a role in serotonin production, aka your “happy hormone.”
Weaker immune system – You may get sick more often.
Sounds familiar? I felt ALL of these before I started supplementing with Vitamin D. Within a few months, I noticed fewer sugar cravings, more stable energy, and an improvement in my cycle regularity.
5 Best Vitamin D Supplements for PCOS (Available on Amazon)
When choosing a Vitamin D supplement, look for Vitamin D3 (cholecalciferol)—it’s the most effective form. Here are my top picks:
Sports Research Vitamin D3 + Coconut Oil
5,000 IU per softgel
Infused with coconut oil for better absorption
Non-GMO & gluten-free
Key Benefits for PCOS:
Enhances hormone balance and supports ovarian function
Helps reduce inflammation, which is common in PCOS
Improves calcium absorption for stronger bones
Boosts immune function and reduces fatigue
Best for: Women with PCOS looking for enhanced absorption and high potency in a clean, non-GMO formula.
Available on Amazon: Sports Research Vitamin D3 + Coconut Oil
NOW Supplements Vitamin D-3
5,000 IU per softgel
Affordable & third-party tested
Helps with bone and immune health
Why It’s Great for PCOS
NOW Foods is a trusted supplement brand known for its affordability and high-quality formulations. This budget-friendly Vitamin D3 supplement is third-party tested, ensuring purity and potency.
Best for: Women with PCOS who want a high-dose, affordable Vitamin D supplement that is lab-tested for purity.
Available on Amazon: NOW Supplements Vitamin D-3
NatureWise Vitamin D3
5,000 IU per softgel
Certified organic, non-GMO, and gluten-free
Highly rated for quality & effectiveness
Why It’s Great for PCOS
NatureWise’s Vitamin D3 supplement mimics the way our body naturally produces Vitamin D from sunlight, making it a highly bioavailable option. It’s certified organic and non-GMO, making it an excellent choice for those who prioritize clean, high-quality supplements.
Reduces testosterone levels, helping with acne and hair loss Strengthens immune function and reduces chronic fatigue
Best for: Women with PCOS looking for a clean, organic supplement that supports overall hormonal and metabolic health.
Available on Amazon: NatureWise Vitamin D3
Garden of Life Vitamin Code Raw D3
5,000 IU per capsule
Whole-food-based formula with probiotics & enzymes
Great for digestion and immune support
Why It’s Great for PCOS
This supplement is more than just Vitamin D—it’s made from whole food sources, meaning it contains natural cofactors like magnesium, zinc, and vitamin K2 that help with absorption. Plus, it includes probiotics and digestive enzymes, making it perfect for women with gut health concerns.
Best for: Women with PCOS who struggle with digestion or want a supplement that includes additional gut and immune support.
Available on Amazon: Garden of Life Vitamin Code Raw D3
Thorne Research Vitamin D-5,000
5,000 IU per capsule
High-quality, pure ingredients with no additives
Trusted by healthcare professionals
Why It’s Great for PCOS
Thorne Research is a premium supplement brand that is widely recommended by functional medicine practitioners. Their Vitamin D-5,000 is ultra-pure, containing no unnecessary additives or allergens, making it perfect for women with sensitivities.
Best for: Women with PCOS looking for a high-quality, professional-grade supplement that is free from fillers and additives.
Available on Amazon: Thorne Research Vitamin D-5,000
How Much Vitamin D Should You Take?
The recommended daily intake for Vitamin D varies, but for PCOS, many experts suggest 2,000-5,000 IU per day. If you’re severely deficient, your doctor may recommend even higher doses temporarily.
Pro Tip: Get your Vitamin D levels tested before starting supplementation! This helps determine the right dosage for your needs.
Natural Ways to Boost Vitamin D
While supplements are super helpful, don’t forget these natural ways to increase your Vitamin D levels:
Sunlight – Aim for 10-30 minutes of direct sunlight (without sunscreen) a few times per week.
Fatty fish – Salmon, mackerel, and sardines are rich in Vitamin D.
Fortified foods – Some dairy and plant-based milks, orange juice, and cereals are fortified with Vitamin D.
Egg yolks – A great source of Vitamin D and other essential nutrients.
If you have PCOS, Vitamin D supplements can make a HUGE difference in managing your symptoms naturally. From improving insulin resistance to balancing hormones and boosting mood, it’s a simple yet powerful addition to your routine.
If you’re not already taking one, consider grabbing one of the supplements listed above and see how it makes you feel. And if you’ve already tried Vitamin D for PCOS, I’d love to hear about your experience in the comments!
