Overview

SCIENTIFIC SCORE
Questionable
Based on 6 Researches
6.3
USERS' SCORE
Good
Based on 7 Reviews
8
Supplement Facts
Serving Size: 1 Vegetable Capsule
Amount Per Serving
%DV
Calcium
115 mg
9%
Vitamin K2 (as menaquinone-7)
100 mcg
**

Top Medical Research Studies

We aimed to determine how vitamin K1 affects coronary artery calcifications in patients undergoing hemodialysis. In our study with 60 participants, we compared the effects of intravenous vitamin K1 against a placebo over 12 months.

The results showed that vitamin K1 significantly slowed the progression of coronary artery calcifications by 55%, compared to the placebo group. This finding suggests vitamin K1 may offer an important benefit in managing heart health for those with chronic kidney disease.
Read More
7
Real-world effectiveness of blood thinners
We explored how well the outcomes of landmark trials for two blood thinners—apixaban and rivaroxaban—hold up in real-world atrial fibrillation (AF) patients. By examining data from the GARFIELD-AF registry, we found that patients on these treatments had similar results in preventing strokes, bleeding, and overall mortality when compared to those on vitamin K antagonists.

While apixaban showed promising results, rivaroxaban had more mixed findings, yet overall, the effectiveness and safety were largely in line with the original trials. This suggests that these medications can be appropriately used in everyday medical practice.
Read More
4
Vitamin K antagonists raise mortality risk
We analyzed data from a study involving patients who underwent mitral valve repair and had atrial fibrillation, comparing the effects of direct oral anticoagulants to vitamin K antagonists (VKAs).

Surprisingly, we found that both treatments led to similar rates of serious complications, like strokes or bleeding. However, those on VKAs showed a significantly higher overall mortality. This suggests that while both anticoagulants may work similarly for immediate outcomes, VKAs might come with increased risks for longer-term survival. Further research is needed to clarify the best options for these patients.
Read More

Most Useful Reviews

7.5
Protects against health risks
4 people found this helpful
Vitamin K2 plays a crucial role in regulating calcium in the body, directing it to bones and teeth while preventing accumulation in arteries and soft tissues, thus protecting the heart. It is also essential for blood clotting and may help fight rheumatoid arthritis, supporting overall health, which I find particularly significant.
Read More
9
Prevents heart disease
1 people found this helpful
Vitamin K is a fat-soluble vitamin essential for blood clotting, bone strength, and prevention of heart disease. Recent studies indicate that it complements vitamin D, optimizing absorption. There are three forms of Vitamin K available, and K2 particularly directs to blood vessel walls and bones without involving the liver. This vitamin strengthens arteries, reducing heart disease risk and preventing osteoporosis, showcasing its overall health benefits, which I consider vital.
Read More
7.5
Improves dental health
Natural Vitamin K2 is indispensable in my diet, vital for maintaining both bone and heart health. Since taking it, I've observed improvements in my dental health and a decreased risk of heart disease. I recommend it to anyone wishing to preserve their body's natural balance.
Read More

Medical Researches

SCIENTIFIC SCORE
Questionable
Based on 6 Researches
6.3
  • All Researches
We aimed to determine how vitamin K1 affects coronary artery calcifications in patients undergoing hemodialysis. In our study with 60 participants, we compared the effects of intravenous vitamin K1 against a placebo over 12 months.

The results showed that vitamin K1 significantly slowed the progression of coronary artery calcifications by 55%, compared to the placebo group. This finding suggests vitamin K1 may offer an important benefit in managing heart health for those with chronic kidney disease.
Read More
We analyzed a study comparing two anticoagulation options—direct oral anticoagulants (DOACs) and vitamin K antagonists (VKAs)—in patients with non-valvular atrial fibrillation who faced blood clots despite previous treatment.

Our findings reveal that those on DOACs had significantly fewer cardioembolic events and complications following left atrial appendage closure.

In contrast, patients on VKAs did not show the same benefit, which suggests that DOACs may be a more effective option for ongoing treatment in these cases.
Read More
7
Real-world effectiveness of blood thinners
We explored how well the outcomes of landmark trials for two blood thinners—apixaban and rivaroxaban—hold up in real-world atrial fibrillation (AF) patients. By examining data from the GARFIELD-AF registry, we found that patients on these treatments had similar results in preventing strokes, bleeding, and overall mortality when compared to those on vitamin K antagonists.

While apixaban showed promising results, rivaroxaban had more mixed findings, yet overall, the effectiveness and safety were largely in line with the original trials. This suggests that these medications can be appropriately used in everyday medical practice.
Read More
We investigated the impact of vitamin K antagonists (VKA) on patients with atrial fibrillation (AF). Our study included 1,350 patients who received VKA for at least a year, tracking various outcomes like cardiovascular death and thromboembolic events.

Interestingly, while we noted predictors for these clinical outcomes—like previous thromboembolism or bleeding—no significant improvement in heart disease was directly linked to vitamin K treatment itself. Instead, factors such as age and kidney function played crucial roles in determining patient outcomes.
Read More
4
Vitamin K antagonists raise mortality risk
We analyzed data from a study involving patients who underwent mitral valve repair and had atrial fibrillation, comparing the effects of direct oral anticoagulants to vitamin K antagonists (VKAs).

Surprisingly, we found that both treatments led to similar rates of serious complications, like strokes or bleeding. However, those on VKAs showed a significantly higher overall mortality. This suggests that while both anticoagulants may work similarly for immediate outcomes, VKAs might come with increased risks for longer-term survival. Further research is needed to clarify the best options for these patients.
Read More

User Reviews

USERS' SCORE
Good
Based on 7 Reviews
8
  • All Reviews
  • Positive Reviews
  • Negative Reviews
7.5
Protects against health risks
4 people found this helpful
Vitamin K2 plays a crucial role in regulating calcium in the body, directing it to bones and teeth while preventing accumulation in arteries and soft tissues, thus protecting the heart. It is also essential for blood clotting and may help fight rheumatoid arthritis, supporting overall health, which I find particularly significant.
Read More
9
Prevents heart disease
1 people found this helpful
Vitamin K is a fat-soluble vitamin essential for blood clotting, bone strength, and prevention of heart disease. Recent studies indicate that it complements vitamin D, optimizing absorption. There are three forms of Vitamin K available, and K2 particularly directs to blood vessel walls and bones without involving the liver. This vitamin strengthens arteries, reducing heart disease risk and preventing osteoporosis, showcasing its overall health benefits, which I consider vital.
Read More
7.5
Improves dental health
Natural Vitamin K2 is indispensable in my diet, vital for maintaining both bone and heart health. Since taking it, I've observed improvements in my dental health and a decreased risk of heart disease. I recommend it to anyone wishing to preserve their body's natural balance.
Read More
7.5
Heart function enhanced
Since taking vitamin K2, I've noticed significant improvements in my heart function. It enhances cardiovascular health and overall physical well-being, making it an essential addition to my routine.
Read More
7.5
Supports heart health
Active drug. It assists with cardiovascular diseases. Solgar is my favourite and trusted producer, whom I trust completely.
Read More

Frequently Asked Questions

7.5
Heart function enhanced
Since taking vitamin K2, I've noticed significant improvements in my heart function. It enhances cardiovascular health and overall physical well-being, making it an essential addition to my routine.
7.5
Improves dental health
Natural Vitamin K2 is indispensable in my diet, vital for maintaining both bone and heart health. Since taking it, I've observed improvements in my dental health and a decreased risk of heart disease. I recommend it to anyone wishing to preserve their body's natural balance.
9
Prevents heart disease
1 people found this helpful
Vitamin K is a fat-soluble vitamin essential for blood clotting, bone strength, and prevention of heart disease. Recent studies indicate that it complements vitamin D, optimizing absorption. There are three forms of Vitamin K available, and K2 particularly directs to blood vessel walls and bones without involving the liver. This vitamin strengthens arteries, reducing heart disease risk and preventing osteoporosis, showcasing its overall health benefits, which I consider vital.
7.5
Protects against health risks
4 people found this helpful
Vitamin K2 plays a crucial role in regulating calcium in the body, directing it to bones and teeth while preventing accumulation in arteries and soft tissues, thus protecting the heart. It is also essential for blood clotting and may help fight rheumatoid arthritis, supporting overall health, which I find particularly significant.
6
Supports bone strength
I trust Solgar for its commitment to high quality. The ingredients are pure, and the capsules are easy to swallow, which is essential for me due to occasional difficulties with larger capsules. I started using this Vitamin K2 for bone health and have noticed stronger bones, particularly in my dental health. It's vegetarian-friendly and non-GMO, aligning with my healthy lifestyle. Moreover, Vitamin K2 is known for supporting heart health, and I feel optimistic that consistent consumption will benefit me in that area. I appreciate that this supplement provides exactly what I need without extra additives or fillers.
We investigated the impact of vitamin K antagonists (VKA) on patients with atrial fibrillation (AF). Our study included 1,350 patients who received VKA for at least a year, tracking various outcomes like cardiovascular death and thromboembolic events.

Interestingly, while we noted predictors for these clinical outcomes—like previous thromboembolism or bleeding—no significant improvement in heart disease was directly linked to vitamin K treatment itself. Instead, factors such as age and kidney function played crucial roles in determining patient outcomes.
4
Vitamin K antagonists raise mortality risk
We analyzed data from a study involving patients who underwent mitral valve repair and had atrial fibrillation, comparing the effects of direct oral anticoagulants to vitamin K antagonists (VKAs).

Surprisingly, we found that both treatments led to similar rates of serious complications, like strokes or bleeding. However, those on VKAs showed a significantly higher overall mortality. This suggests that while both anticoagulants may work similarly for immediate outcomes, VKAs might come with increased risks for longer-term survival. Further research is needed to clarify the best options for these patients.
We aimed to determine how vitamin K1 affects coronary artery calcifications in patients undergoing hemodialysis. In our study with 60 participants, we compared the effects of intravenous vitamin K1 against a placebo over 12 months.

The results showed that vitamin K1 significantly slowed the progression of coronary artery calcifications by 55%, compared to the placebo group. This finding suggests vitamin K1 may offer an important benefit in managing heart health for those with chronic kidney disease.

References

  1. Liporace IL, Oliveira GBF, Alves LBO, Galassi NM, Jeronimo AD, et al. Incidence and Predictors of Clinical Outcomes in Patients with Valvular and Nonvalvular Atrial Fibrillation Using Vitamin K Antagonists. Arq Bras Cardiol. 2025;122:e20240147. doi:10.36660/abc.20240147
  2. Schipper JH, Sommer AS, Nies RJ, Metze C, Meertens MM, et al. Direct Oral Anticoagulants Versus Vitamin K Antagonists After Mitral Valve Transcatheter Edge-to-Edge Repair in Patients With Atrial Fibrillation: A Single-Center Observational Study. J Am Heart Assoc. 2025;14:e038834. doi:10.1161/JAHA.124.038834
  3. Babadagli HE, Ye J, Chen J, Turgeon R, Wang EH. Efficacy and safety of anti-thrombotic therapy after surgical mitral valve repair: a scoping review. Open Heart. 2025;12. doi:10.1136/openhrt-2024-003158
  4. Himmelreich JCL, Virdone S, Camm AJ, Pieper K, Harskamp RE, et al. Emulation of ARISTOTLE and ROCKET AF trials in real-world atrial fibrillation patients results in similar efficacy and safety as original landmark trials: insights from the GARFIELD-AF registry. Open Heart. 2025;12. doi:10.1136/openhrt-2024-002966
  5. Macias-Cervantes HE, Ocampo-Apolonio MA, Guardado-Mendoza R, Baron-Manzo M, Pereyra-Nobara TA, et al. Effect of vitamin K1 supplementation on coronary calcifications in hemodialysis patients: a randomized controlled trial. J Nephrol. 2025;38:511. doi:10.1007/s40620-024-02154-9
  6. Preda A, Falasconi G, Melillo F, Margonato D, Posteraro GA, et al. Left atrial appendage closure in patients with failure of anticoagulation therapy: A multicenter comparative study on the hybrid strategy using DOACs and VKAs. Int J Cardiol. 2025;421:132875. doi:10.1016/j.ijcard.2024.132875
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