Vitamin ReviewsVitamin DDoctor-recommended Vitamin D3+K2 supplement boosts low levels effectively, ideal for winter sunlight shortages.

Doctor-recommended Vitamin D3+K2 supplement boosts low levels effectively, ideal for winter sunlight shortages.

2025-06-22 Vitamin Reviews Categroy:Vitamin D Views:24


This Vitamin D3+K2 supplement reversed my deficiency, proving vital for winter months with minimal sun exposure. Highly recommended!


This review is from Amazon.com for product:


Peak Performance Advanced Vitamin D 10000 IU with All 3 Types of Vitamin K Capsules 10,000 IU Vitamin D3 and Vitamin K2, K1, MK-7 (MK7), MK4 Supplement. 60 Small and Easy to Swallow Pills


Peak Performance Vitamin D3+K2: Winter Deficiency Solved!


Great Vitamin Supplement!! My Dr. recently requested I go back on Vitamin D 5-10k and to find a product with a Vitamin K addition for easy absorption. I have been taking the Peak Performance Vitamin D supplement for 2 months and have found and increase in my vitamin D levels, which were very low, to no be returning to a stable level with this supplement. I will be ordering more to continue to supplement myself. It has become apparent over the past 3 years that if I do not supplement during the winter months when I see little to no sun that I had fall dangerously low in Vitamin D levels.


Vitamin Basics & Tips


Vitamin D, a fat-soluble nutrient, plays a critical role in calcium absorption, bone health, and immune function. While sunlight is the primary natural source, factors like geographic location, seasonal changes (e.g., limited winter sun), and skin pigmentation can hinder adequate synthesis. Supplements like Vitamin D3 (cholecalciferol) are often recommended for deficiency management, with doses ranging from 5,000–10,000 IU for adults under medical supervision.


Combining Vitamin D3 with K2 (as in this product) enhances calcium metabolism: D3 increases calcium absorption, while K2 directs it to bones and teeth, preventing arterial calcification. This synergy is particularly beneficial for cardiovascular and skeletal health. Daily intake should align with individual needs—blood tests help determine optimal dosing. Dietary sources like fatty fish, fortified foods, or egg yolks provide modest amounts, but supplements remain crucial for those with deficiencies or limited sun exposure.


Seasonal supplementation, especially in winter, addresses the “vitamin D winter” phenomenon in higher latitudes where UVB rays are insufficient. Chronic deficiency risks include osteoporosis, weakened immunity, and mood disorders. Always consult a healthcare provider to tailor supplementation to your health profile.



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Tags: vitamin d3+k2 supplement winter deficiency absorption boost 5-10k iu peak performance


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