Zhou Nutrition Vitamin D3 K2, Bone and Heart Health Formula 5000 IU Vitamin D3 & 100 mcg Vitamin K2, Max Strength 2 in 1 Immune Support and Calcium Absorption, Gluten Free, 60 Count

This is an excellent product which combines not only D3 but also K2 which is needed to make the D3 effective. They are combine as one pill. The dosage and pill content is great and a generous supply when compared to other brands and the price is great. My levels have been able to be maintained so the product is doing the job to the satisfaction of my doctor. Highly recommend.

Great item

So far been using this product for a few mo month now and is working with my health one capsule a day very small if my type of pill.

I still need to verify Vitamin D levels via a blood test, but product seems ok. The one thing that's really needed here is more information from the company on quality assurance. I can't find any information on where the product is made, is it in FDA facility? Does it use GMP procedures? I can't find the company's quality rating on any website. All you have to do is read an article on some vitamin manufacturer that's been charged and sued because their product just has less than 50% of what's on the label or its just filler. In Short, more information on Zhou Nutrition and the manufacturing of their products is needed. -- -- Thank you for your prompt response to my request for more information on your company and it production facilities, I didn't mean to imply that I had a negative experience with the product, only that I couldn't find information on how it was made. That said, thanks for confirming that the manufacturing facilities are FDA registered and inspected and by extension concur with GMP standards, jlh

I've just started using this brand of K2-D3. Out of 1500+ reviews, a high 86% are five-stars and another 10% four-stars. That speaks highly for its quality and value. For about 8 months now I've been ingesting various brands of K2 and D3, some combined and some separate, both pills and a liquid -- you use a few drops in the mouth and let it absorb. I believe that form helps it work more quickly. I've spent a lot of time in research on the value of Vitamin D3-K2, and my conclusion and experience are very positive. Vitamin D (specifically D3, the form you get from the sun) is essential for proper calcium absorption. Without D3, you may be missing out on benefits from the calcium in your diet. Vitamin K2 While vitamin D ensures calcium is absorbed, vitamin K2 (specifically as MK-7, the most bioavailable form) directs it to bones instead of arteries, where calcification or other issues could occur. Eight months ago the orthopedic doctor told me I need a double-knee replacement since both knees were bone on bone. That's very painful and makes it difficult to walk. The MRI also showed severe problems in my lower back that caused severe sciatica. The doctor said he couldn't guarantee surgery would solve that problem, and he recommended injections every 5 to 6 months. I'm glad to report that after 8 months of K2-D3 my sciatica is hardly noticeable. And my knees are better too, although I plan X-rays next month to see if cartilage has really built up. I am my best guinea pig and experiment on myself through natural means. This supplement of K2-D3 is one of those natural means.