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  • Vitamin D
    The Best Vitamin D Supplements for Effectiveness and Value

    UPDATED Thu, 01 May 2025

    Aging and symptoms associated with menopause can be improved with proper vitamin D levels. Supplementing with vitamin D can help boost energy levels and fight fatigue.  It can also help with joint pain as well as bone health. Vitamin D also supports a healthy immune system. Many experts recommend supplementing 5,000 IU (125 mcg) per day or more. 

    At 5MinuteReviews, we've chosen a few of our most recommended K2 + D3 supplements available online. We recommend Clinical Effects K2+D3 as the best Vitamin D supplement available on the market today.

    Studies estimate that about 42% of the US population is deficient in vitamin D. This percentage increases with age and certain risk factors such as being overweight, having darker skin, limited exposure to sunlight, always using sunscreen, and not eating animal products.

    Fatigue is a common symptom of low vitamin D. Supplementing vitamin D can help boost energy levels and mood.

    Vitamin D is also good for bone, joint and muscle health. Taking vitamin D improves calcium absorption and can help strengthen bones and improve joint comfort.

    Support health and immune function. Healthy levels of vitamin D have been shown to help reduce risk for certain types of disease and boost immune health.

    What is the best way to increase vitamin D?

    We found clear standouts – and many that you should avoid at all costs. Ready to discover which is right for you?

    Many experts recommend taking 5,000 IU (125 mcg) per day or more. Most multivitamins only contain vitamin D in small amounts too low to be effective. Vitamin D3 is most effective at raising vitamin D levels.

    Vitamin D and Vitamin K (specifically K2) should be taken together. These vitamins work synergistically to boost absorption and effectiveness.

    Our research concluded that Clinical Effects K2+D3 contains everything an effective vitamin D supplement should for a great value.

    Keep reading to learn more about our thorough review process.

    Our Research-Backed 9-Point System

    When choosing a vitamin D supplement, just going with any off-the-shelf unknown vitamin D supplement doesn't cut it.

    Here at 5 Minute Reviews, we use a proven 9-point ranking system to test and compare all of our products. It’s important to know how our ranking system works:

    1. Product quality based on material and sourcing.
    2. The presence of harmful material/ingredients.
    3. Manufacturer upholds high quality assurance protocols.
    4. The science, research and development behind the product.
    5. High-quality, regulated manufacturing facilities and processes.
    6. Third-party testing to validate the quality of the product.
    7. Customer reviews – removing fake/paid reviews so only real opinions count.
    8. Price.  Is it worth the money?
    9. Return policy and money back guarantee.

    A Guide To Our Rankings: How We Picked our Top Choice

    After intense research and consultations with numerous customers interviewed, we found the following 3 products that became our top picks. We chose these three based on the following factors:

    • Customer Satisfaction
    • Impressive Results 
    • Ingredients
    • Formula Transparency
    • Affordability/Value
    • ​Company Reputation

    ADVERTISEMENT

    5MinuteReviews is owned and operated by the same company that owns certain products featured on this website, including the products ranked number one. This is an advertisement which contains reviews and information about Clinical Effects products. While third-part products are presented, this is a promotional side focused on the sale of Clinical Effects products. In addition, we receive compensation from certain companies whose products are featured on this website when you purchase a product using the links on this website. This is not an independent news article, blog, or consumer protection update. Editorial content is not a substitute for, nor should it replace the advice of your healthcare professional.

    Our Top Picks For Most People

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    Vitamin D Supplement
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    Review Item 2
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    Review Item 3
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    Review Rating 1
    Heart & Vascular Health
    Review Rating 2
    Bone Health
    Review Rating 3
    Health Support
    Review Rating 4
    INGREDIENTS
    Review Rating 5
    COST
    Review Rating 6
    CUSTOMER HAPPINESS
    • https://www.clinicaleffects.com/products/k2d3/

      Pros:

      • Promotes strong bones and circulatory health
      • Contains vitamin D3 to support a healthy immune system
      • Uses MK-7 form of K2 to guide proper calcium absorption
      • Complete and balanced formula with transparent labeling
      • Includes patented Bioperine (black pepper) for better absorption
      • Great value with cost-saving packages
      • 180 day money-back guarantee

      Cons:

      • Only available online
      • Sometimes runs out of stock

      The Bottom Line

      Clinical Effects K2+D3 is our top choice because it is exceptional in all of the areas we were considering for a top vitamin D supplement.

      We found that several vitamin D supplements lacked transparent labeling or had unwanted ingredients, or were limited in their quantities of active ingredients. Clinical Effects K2+D3 has none of those problems.

      Some supplements also had some customer stories in which there were limited effects or no benefits even after taking the supplement for several months. Clinical Effects had the potency in ingredients and safe production standards we seek, plus numerous customer satisfaction stories.

      We only consider supplements that have clear and transparent labeling as one of our top protocols. You can also trust that Clinical Effects only utilizes the safest and best production standards, as all of our products are made in the USA and produced with stringent protocols.

      Each bottle contains 60 capsules and each 1 capsule serving designed to be take twice daily provides not only vitamin D3 but also vitamin K2 and calcium.

      Customers love the fact that they can trust in the safety and purity of this particular D3 and K2 supplement, and many of them do experience some health benefits after taking the supplement. Other customers just wanted a safe source of vitamin D and were satisfied that they could find that with Clinical Effects. 

      To purchase Clinical Effects K2+D3, click on the link below (order while supplies last)

    • 5MR_CE-K2D3

      Title

      Item ID

      Review URL

      https://www.oweli.com/products/k2d3/

      Is Amazon URL?

      No

      Pros:

      • Works very well in promoting energy throughout the day
      • Helps with deep, restful sleep without sedating you
      • Joints and bones can feel stronger after consistent use

      Cons:

      • Effects are gradual and subtle, not instant
      • Hard to find in stock usually because of high demand
    • 5MR_CE-K2D3

      Title

      Item ID

      Review URL

      https://amzn.to/3wBCGCg

      Is Amazon URL?

      Yes

      Pros:

      • Includes Mk-7 form of Vitamin K and D3
      • Also includes calcium
      • Uses patented BioPerine
      • Helps balance calcium levels in the body

      Cons:

      • Only available on Amazon

    ADVERTISEMENT

    5MinuteReviews is owned and operated by the same company that owns certain products featured on this website, including the products ranked number one. This is an advertisement which contains reviews and information about Clinical Effects products. While third-part products are presented, this is a promotional side focused on the sale of Clinical Effects products. In addition, we receive compensation from certain companies whose products are featured on this website when you purchase a product using the links on this website. This is not an independent news article, blog, or consumer protection update. Editorial content is not a substitute for, nor should it replace the advice of your healthcare professional.