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If you’ve discovered you have a deficiency in vitamin D, you’re not alone. It’s particularly common among people who get limited sun exposure, as well as people with dark skin, people over age 65 years, and people who smoke. Breastfed infants and children with certain medical conditions are also susceptible to vitamin D deficiency.
If a healthcare professional has recommended a vitamin D supplement for calcium absorption, bone health, or muscle growth and development, we’ve vetted and narrowed down our recommendations to eight supplements for when vitamin D from sun exposure is not enough or inaccessible.
A note on price
Vitamin D supplement prices are generally $0.04 to $0.55 per serving (1 or 2 capsules or 1 to 5 drops), or $8 to $54.49 per container. Below we use the following ranges for individual products:
Vitamin D is an essential nutrient that plays a key role in many aspects of health, including:
calcium absorption
bone health
immune function
disease prevention
Because vitamin D is found naturally in very few food sources and is mostly obtained through sun exposure, many people have an increased risk of deficiency.
Vitamin D supplements can help ensure that you’re getting the amount of vitamin D you need. They come in two forms: vitamin D2 and vitamin D3. While both forms can increase blood levels of vitamin D, vitamin D3 can raise vitamin D levels higher and for longer than vitamin D2.
Before you decide on a vitamin D supplement, getting your nutrient levels checked is wise. A blood test is the only way to find out whether you are deficient, insufficient, sufficient, or optimal in any nutrient.
A healthcare professional can order blood work and help you determine an appropriate dosage if a supplement is necessary for you. At-home testing kits may also be useful to measure your vitamin D levels.
Research shows that vitamin D3 is more effective than vitamin D2 at increasing blood levels of vitamin D. A 2020 study also found that both liquid and capsule vitamin D3 supplements can raise vitamin D levels efficiently.
Vitamin D3 is typically better absorbed and used by the body than vitamin D2. Keep in mind, vitamin D is a fat-soluble vitamin, so it requires dietary fat in order to be full absorbed. It’s a good idea to take your vitamin D with a meal containing healthy fats.
The most useful vitamin D will contain D3 and meet your individual needs for dosing and other preferences, like cost and dietary restrictions, and form, like capsule, liquid, or chewable.
The best strength of vitamin D can vary based on individual needs and levels, and it’s possible to overdo it. Be sure to consult with a healthcare professional for personalized dosage recommendations.
The products above are among the best vitamin D supplements on the market and suit a wide variety of needs. Just keep in mind that for optimal absorption, it’s best to take vitamin D supplements with a meal containing fat, such as olive oil or peanut butter.
Before taking any new supplements, it’s important to speak with a healthcare professional to determine whether — and how much — you need to supplement.
Healthline has strict sourcing guidelines and relies on peer-reviewed studies, academic research institutions, and medical journals and associations. We only use quality, credible sources to ensure content accuracy and integrity. You can learn more about how we ensure our content is accurate and current by reading our editorial policy.
Frankling MH, et al. (2020). Are vitamin D3 tablets and oil drops equally effective in raising s-25-hydroxyvitamin D concentrations? A post-hoc analysis of an observational study on immunodeficient patients. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7282031/
Xiaotong K, et al. (2020). The combination effect of vitamin K and vitamin D on human bone quality: A meta-analysis of randomized controlled trials. https://pubmed.ncbi.nlm.nih.gov/32219282/
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Evidence Based
This article is based on scientific evidence, written by experts and fact checked by experts.
Our team of licensed nutritionists and dietitians strive to be objective, unbiased, honest and to present both sides of the argument.
This article contains scientific references. The numbers in the parentheses (1, 2, 3) are clickable links to peer-reviewed scientific papers.