The 8 Best Vitamin D Supplements For Immunity, Bone Health & More*
Vitamin D is a big topic right now—and considering an alarming 41% of American adults meet the criteria for insufficiency (meaning they have levels lower than 30 ng/ml) and 93% of U.S. adults aren't even getting 400 IU of this essential fat-soluble vitamin from their daily diet, it's well-deserving of the attention.
Given how tricky (OK, more like impossible) it is to get ample amounts of the nutrient from food and sunlight alone, taking a supplement is ultimately the route to achieving and sustaining an ideal vitamin D level—which is 50 ng/ml or higher—for life.*
The thing is, though, that all vitamin D supplements are not created equal. In fact, they're far from it.
Here are our top picks for getting the high-quality vitamin D you need (and in ample amounts) from your supplement routine.
- Best overall: vitamin D potency+, mindbodygreen
- Best vegan D3 tablet: Vitamin D3 from Organic Lichens, Truvani
- Best chewable D3: Chewable Vitamin D3 5,000 IU, NOW Foods
- Best kids' D3 gummy: Kids First Vitamin D3 Gummies, Nature Made
- Best liquid D3 for babies: Baby's Vitamin D3, Nordic Naturals
- Best D3 + K2 combo: Plant-Based D3+K2 2-in-1 Formula, Sports Research
- Best fermented D3: Vitamin D3 2,000 IU, MegaFood
- Best extra-high-potency D3 capsules: Vitamin D3 10,000 IU, Pure Encapsulations
Our Favorite Vitamin D Supplements
best overall: mindbodygreen vitamin D3 potency+
Best vegan: Truvani Vitamin D3 from Organic Lichens
Best chewable: NOW Chewable Vitamin D3 5,000 IU
Best gummy for kids: Nature Made Kids First Vitamin D Gummies
Best liquid for babies: Nordic Naturals Baby's Vitamin D3
Best D3+K2 combo: Sports Research Plant-Based D3+K2
Best fermented: MegaFood Vitamin D3 2,000 IU
Best extra high-potency: Pure Encapsulations Vitamin D3 10,000 IU
What to look for in a vitamin D supplement.
We've hand-selected the products featured here and recommend them wholeheartedly.
That said, we also want to give you the know-how to look for your own vitamin D supplements—or, at the very least, help you understand our selection process.
Here are a few must-have criteria when searching for a vitamin D supplement, according to mbg vice president of scientific affairs Ashley Jordan Ferira, Ph.D., RDN:
- Adults should look for a minimum of 2,000 I.U. per day (5,000 I.U. daily is best, but even more might be necessary if the person has higher body fat or if an individual's D deficiency is stubborn)* Note: Infants need 400 I.U. of vitamin D per day, while 1,000 I.U. daily is a healthy vitamin D dose for children and adolescents.
- Opt for vitamin D3 form (cholecalciferol), which is two to three times more potent than D2 (ergocalciferol).
- For animal-source D3, look for lanolin (derived from sheep's wool), which is high quality and affordable.
- For vegetarian or vegan D3 sources, look for algae or lichen (though algae is considered to be more sustainable, and organic algae is the most premium option).
The benefits of vitamin D.
A few of vitamin D's noteworthy roles, in particular, that are worth calling out:
- It helps regulate the production of thyroid hormones.*
- During pregnancy, it promotes better maternal and infant outcomes related to bone density, immune function, fetal growth, maternal metabolic health, and more.*
- It supports immunity, promoting white blood cell function, helping the immune system adapt to and ward off threats, and more.*
- It does your gut good by playing a key role in the health and integrity of the gut mucosal lining.*
- It helps the body absorb and maintain the proper balance of calcium and phosphorus, which are both crucial for bone health.*
Supplementing with vitamin D is a simple (and typically necessary) way to ensure you get the daily vitamin D you need to hit and maintain healthy vitamin D status for life.*
Consult with your health care provider to identify your unique needs and goals, but know that these hand-selected supplements are a great place to start.
If you are pregnant, breastfeeding, or taking medications, consult with your doctor before starting a supplement routine. It is always optimal to consult with a health care provider when considering what supplements are right for you.
Lauren Del Turco, CPT is a freelance health and wellness writer, editor, and content strategist who covers everything from nutrition to mental health to spirituality. Del Turco is also an ACE-certified personal trainer. She graduated from The College of New Jersey with a Bachelor of Arts in English and Creative Writing. When she’s not on deadline, you’ll find Del Turco hiking with her dogs, experimenting with new plant-based recipes, or curled up with a book and tea.