Best Vitamin D Supplements for 2025
Why Vitamin D?
Vitamin D is more than just the “sunshine vitamin.” It plays a vital role in supporting bone density, immune function, cardiovascular health, and even muscle recovery. In recent years, the synergy between vitamin D3 and K2 has become the gold standard for supplementation—working together to ensure calcium gets absorbed and sent to the right places (your bones, not your arteries).
As a sports acupuncturist with over a decade of clinical experience and 20 years in strength training, I often recommend D3 + K2 to clients dealing with fatigue, recurring injuries, or slow recovery. Adequate levels can help reduce inflammation, support immune resilience, and speed up the repair process post-training.
Whether you’re indoors most of the day, live in a northern climate, or simply want to optimize recovery and health, a high-quality vitamin D supplement is worth adding to your stack. Let’s take a look at the best options for 2025.
Best Overall Vitamin D: Sports Research D3 + K2 with Coconut Oil
- D3 + K2 – TEAMWORK THAT MATTERS: Vitamins D3 and K2 work synergistically to support strong bones,…
- PLANT-BASED, VEGAN-FRIENDLY FORMULA: Our D3 + K2 supplement uses vegan D3 (cholecalciferol) sourced…
- ONCE-A-DAY IMMUNE & BONE SUPPORT: Each easy-to-swallow softgel delivers 125 mcg (5000 IU) of vegan…
5,000 IU D3 + 100 mcg K2 (MK7) | Vegan | 60 softgels
This one checks all the boxes: plant-based D3 from lichen, highly bioavailable K2 (MK7), coconut MCT oil for better absorption, and no sketchy fillers. It’s third-party tested, vegan certified, and free from soy, gluten, and carrageenan. If you want one high-quality supplement to support your bones, immune system, and recovery, this is it.
Best for:
- Overall health support
- Active individuals and athletes
- Those seeking a vegan, clean-label product
- D3 + K2 – TEAMWORK THAT MATTERS: Vitamins D3 and K2 work synergistically to support strong bones,…
- PLANT-BASED, VEGAN-FRIENDLY FORMULA: Our D3 + K2 supplement uses vegan D3 (cholecalciferol) sourced…
- ONCE-A-DAY IMMUNE & BONE SUPPORT: Each easy-to-swallow softgel delivers 125 mcg (5000 IU) of vegan…
Best Bulk Option: Micro Ingredients D3 + K2 (10,000 IU / 200 mcg)
- Micro Ingredients offers double-strength vitamin D3 + K2 softgels. An efficiently absorbed 2-in-1…
- Each pouch includes 300 mini softgels infused with coconut oil, delivering a potent one a day…
- Fat soluble vitamins like D and K are absorbed more effectively when a fat source is present. The…
300 mini softgels | Non-GMO | MCT oil-infused
This mega-dose formula offers serious value: 300 softgels, each with a potent 10,000 IU of vitamin D3 and 200 mcg of K2. It’s great for people correcting a deficiency or those who need high-dose supplementation under the guidance of a healthcare professional.
Best for:
- People with low D levels
- Long-term supplement users
- Value seekers looking for a long-lasting supply
- Micro Ingredients offers double-strength vitamin D3 + K2 softgels. An efficiently absorbed 2-in-1…
- Each pouch includes 300 mini softgels infused with coconut oil, delivering a potent one a day…
- Fat soluble vitamins like D and K are absorbed more effectively when a fat source is present. The…
Best Advanced Formula: Dr. Berg D3 K2 with MCT, Zinc & Magnesium
- VITAMIN D3 WITH K2– Our vitamin K2 and D3 with magnesium supplement is made up of 5000 IU of…
- SMART SYNERGY – Our D3 + K2 vitamin supplement goes beyond the typical combo. Formulated with…
- ENHANCED ABSORPTION – Our powerful K2 D3 vitamin supplement contains fat-soluble vitamins that…
5,000 IU D3 + 50 mcg K2 + minerals | 60 capsules
More than just a vitamin D supplement, this one adds magnesium, zinc, MCT, and even purified bile salts to support digestion and nutrient utilization. Designed for maximum absorption, it’s ideal for those who want a more comprehensive supplement.
Best for:
- People who want more than just D and K
- Fitness-focused users or those recovering from injury
- Anyone with digestive issues
- VITAMIN D3 WITH K2– Our vitamin K2 and D3 with magnesium supplement is made up of 5000 IU of…
- SMART SYNERGY – Our D3 + K2 vitamin supplement goes beyond the typical combo. Formulated with…
- ENHANCED ABSORPTION – Our powerful K2 D3 vitamin supplement contains fat-soluble vitamins that…
Best Minimalist Formula: Bronson Vitamin K2 + D3
- The Perfect Pair: Vitamins K2 & D3 were simply meant to be together. Most people know the benefits…
- Strong Bones: This formula not only promotes the proper absorption of calcium with D3, but the…
- Superior Quality Capsules: Laboratory tested, NON-GMO, GLUTEN FREE, & SOY FREE. All Bronson products…
5,000 IU D3 + 90 mcg K2 (MK7) | 60 capsules | Non-GMO
Straightforward, affordable, and effective. Bronson keeps it simple with a clean combo of D3 and K2. If you want a reliable supplement without paying extra for bells and whistles, this is a solid pick.
Best for:
- Daily health maintenance
- Budget-conscious shoppers
- Anyone new to D3 + K2 combos
- The Perfect Pair: Vitamins K2 & D3 were simply meant to be together. Most people know the benefits…
- Strong Bones: This formula not only promotes the proper absorption of calcium with D3, but the…
- Superior Quality Capsules: Laboratory tested, NON-GMO, GLUTEN FREE, & SOY FREE. All Bronson products…
Best for Bone & Vascular Health: Pure Encapsulations D3 + K2
- Supports Bone Strength: Pure Encapsulations Vitamin D3 & K2 helps maintain strong bones by aiding…
- Vascular Health Support: Vitamin K2 works with D3 to support arterial flexibility and healthy…
- Immune Function Support: Delivers 4,000 IU of vitamin D3 to help support the immune system and…
120 capsules | High-quality ingredients | Hypoallergenic
This clinical-grade product is ideal for those who need targeted support for calcium metabolism and cardiovascular health. Free of gluten, GMOs, fillers, and common allergens, it’s a trusted choice among healthcare professionals.
Best for:
- People with heart health concerns
- Anyone with allergies or sensitivities
- Professional-grade supplement seekers
- Supports Bone Strength: Pure Encapsulations Vitamin D3 & K2 helps maintain strong bones by aiding…
- Vascular Health Support: Vitamin K2 works with D3 to support arterial flexibility and healthy…
- Immune Function Support: Delivers 4,000 IU of vitamin D3 to help support the immune system and…
Best Budget Vitamin D Combo: DEAL Supplement D3 K2 Softgels
- 2 in 1 Support – Liquid vitamin D3 with K2 supplement, provides 5,000iu vitamin D3 plus vitamin K2…
- The Best Partner – Vitamin D3 with K2 (D3 K2 Vitamin 5,000iu), to get proper calcium absorption…
- Vitamin D3 for adults and kids, often referred to as the “Sunshine Vitamin.” This essential…
5,000 IU D3 + 100 mcg K2 | 250 softgels | Non-GMO
DEAL’s supplement offers excellent value for those who want a large quantity of D3 and K2 at a low cost. Despite the price, it still delivers solid potency, bioavailable forms, and third-party testing.
Best for:
- Budget-minded users
- Large households or couples
- Long-term supplement routines
- 2 in 1 Support – Liquid vitamin D3 with K2 supplement, provides 5,000iu vitamin D3 plus vitamin K2…
- The Best Partner – Vitamin D3 with K2 (D3 K2 Vitamin 5,000iu), to get proper calcium absorption…
- Vitamin D3 for adults and kids, often referred to as the “Sunshine Vitamin.” This essential…
Side-By-Side Comparison
How to Choose the Right Vitamin D Supplement
Here are a few things to look for when selecting your D3 + K2 combo:
- Form Matters – Look for cholecalciferol (D3) and menaquinone-7 (MK7) for the most effective pairing.
- Bioavailability – Oil-based softgels or capsules with MCT tend to absorb better than dry tablets.
- Third-Party Testing – Ensures quality, potency, and safety of your supplement.
- Dosage – 2,000 to 5,000 IU is a common daily dose. Higher doses (10,000 IU) should be used with professional guidance.
- Add-ons or Simplicity – Some prefer minimalist formulas; others want added magnesium or zinc. Pick what suits your goals.
Key Takeaways
Vitamin D is one of the most research-backed nutrients for immune resilience, bone strength, and muscle recovery. Pairing it with vitamin K2 makes it significantly more effective, especially for directing calcium to the right places in the body.
Whether you’re going all-in with Sports Research, going big with Micro Ingredients, or keeping it budget-friendly with DEAL Supplement, there’s a high-quality option here for every goal and lifestyle.
Stay strong, stay balanced, and stay consistent.
