If short of Vitamin D3, easy to get sick and feel depressed. Also, there is no overdose issue. I am very happy to have this product. I take 2 other product by HFL - all give great results

before using Deep Sleep formula, I'd be tossing and turning or getting up every 2-3 hours. Very restless. It was annoying. I've now been using Deep SLeep for almost 2 months and I'm sleeping much better. I feel more relaxed and at ease

So far I love this product! My vitamin D levels has been really low and I needed something that didn’t contain a lot of unnecessary stuff. I only been taking this a week but I can feel the change already. Plus, the Vit K is a good thing too, so I'm happy

I used this product as daily supplement. It's hard to tell the actual outcome or result of taking this supplement, that's why I gave 4 stars. But it's easy to swallow, no bad smell and no negative side effect seen. 

It's plant based and combines the important K with it. In my next blood test, I'll see the results and come back and give it 5 stars. 

I love deep sleep formula, it's really good. I just wish it was a little less expensive. I'm a senior on a tight budget. But, my sleep means a lot to me and Deep Sleep has helped with my memory and mood. THank you and God bless

works as promised, just like other supplements I've used by HFL

Four stars because I need to get blood work done to see if it's really working. I want my level to be between 40 and 60. I switched over from Naturemade D3 5,000 IU. This is capsules versus Naturemade powder which is oil-based with soybean oil. 

This also has the important K2/MK7 that most products do NOT have. I will update later on with vitamin D numbers from my lab work in the future. I do feel sharper and more energy after this supplement, and I see other doctors recommending this brand. I hope all other reviews are genuine and authentic.

Trusted source. Small and easy to take and works great. I have a vitamin D deficiency that makes my joints hurt. 5,000 IU of vitamin D a day + K2 and I am feeling good!