THORNE - Vitamin K2 - Concentrated Vitamin K2 (as MK-4) Liquid Supplement - Supports Bone, Heart & and Blood Vessel Health* - Third-Party Certified - Gluten, Dairy & Soy-Free - 1 Fl Oz

I've stopped going to the dentist for teeth cleaning altogether. Adding this vitamin K2 cleaned the calcified krud off the back of my lower front teeth in 2 days! Truly amazing! Now my teeth are smooth and clean all the time. I just brush my teeth once a day -- and often I forget to do even that. I'm saving good money without the dentist 2x year. I learned about it from Richard Nikolay at Free the Animal website. He wrote: "Well, the K2 is the only one I definitely "feel." . . . Within a few days, all plaque deposits on my teeth dissolved and have not returned. This has been a big issue, as I had gum disease and two surgeries about seven years ago. Since getting off grains (probably the gluten) my gum disease has reversed completely according to the dentist. And now, my teeth are virtually always smooth. I rarely feel the need to brush them." So, I had to try it. And it worked. The vitamin K2 is a hard to get vitamin, even if you eat the best pastured eggs, butter and organ meats. It's the 'X-Factor' that Dr. Weston A. Price discovered. It puts the minerals where they are supposed to go, instead of calcifying your arteries and joints and tartar on your teeth. Be sure to get the MK-4 version of vitamin K2. The MK-7 is the plant derived form. In answer to one critic, the likely reason MK-4 doesn't hang around in the blood very long is because the body uses it up immediately. MK-4 is the form our body uses most readily. If you have concerns about this, google these two articles: Chris Masterjohn's "On the Trail of the Elusive X-Factor", and then look for Stephen Guyenet's blog post "Vitamin K2." And even though this bottle costs alot up front, you only need several drops a day -- so the bottle will last you all year. NOTE: Read all of Richard Nikolay's blogs on this. Apparently, for this to work, you need good quality Fermented Cod Liver Oil, only made by Green Pastures. I have been on that kind of cod liver oil for years. Maybe that's why I had such a dramatic effect. Bottomline: if we get all the nutrients we really need, our body should be clean and smell good -- like all primitive people were. I also stopped wheat completely (read Wheat Belly by William Davis) and bye-bye went bad breath and body odor. I only take a shower every 2 or 3 days. It is a great freedom.

I have been taking the natto stuff (mk7) but kept reading all the good stuff from Chris Masterjohn and Ray Peat about vitamin k2 in the mk4 version. Obviously not about to go ham on the goose liver - and pastured eggs and milk are good but not great sources of this vitamin. I can’t eat beef liver without gagging so this stuff is it. I take 1-2 drops a day usually in a divided dose. The bottle has 1200 drops in it so it should last a long time which is good cuz it’s expensive. I keep it in the fridge. I have noticed a difference I think - some people say mk4 doesn’t stay in your blood for very long and is useless while others say that it’s being absorbed by your tissues which is where you’d want this form to go. So ultimately I’m young and healthy and trying to stay that way with a nutritional amount of this stuff (not therapeutic doses) so I guess we’ll see how I’m doing in another 35 years? People say their teeth feel great, I’d agree. I was having some jaw pain and stuff that’s gone. I think I feel a little more energetic too. Update 12/13/19 Still taking this stuff and my original bottle is still good to go. I got a chest x ray done when I pulled a muscle to rule out any other issues and my bones are great. No arthritis and they’re nice and thick. I’m still pretty young but I know people younger than me that have been surprised to find out they already have the earliest stages of arthritis beginning. So anecdotally I think It’s helping keep me healthy and I’ll keep taking it in the low doses that I do.

Trusted brand. Highly rated. 3rd party tested. I can tell these are working as very little tartar buildup on my teeth. Bought to help improve bone density score on dexa in another year and a half.

The product itself is excellent. The bottle is defective that I received again! for the second time although I didn’t contact Amazon, the first time , AGAIN is seeping through bottle so losing product and this is not cheap. Therefore, I will look for an alternative place to buy it , although I called Amazon and they were happy to request a partial credit.

Like many reviewers, I found that using this daily reduced any tartar buildup on the back of my lower front teeth. My main reason for taking it though, was to help with Calcium transport out of my arteries and into my bones. I'm on my second bottle, and I can't tell if it's working in that regard, but the way it reduces the calcium buildup on my teeth is encouraging. There is conflicting information whether Mk-4 or Mk-7 is better, and this is the MK-4 version. My research indicates Mk4 is the better form, but do your own research and draw your own conclusions. The price is high, but keep in mind that this is high dose formula, and the price per mg is pretty reasonable. Most of the published research uses 45 mg/day, and I'm taking 30 - 40 mg/day. A lot of other Vit. K products report their dosage in mcg (1 mg = 1000mcg). Each drop is 1mg, and there are 1200 drops per bottle according to the label. As others have noted, it drips out pretty slow - not a big deal but who wants to waste a minute waiting when it can be done in a few seconds? The solution is to pry off the plastic drip dispenser and enlarge the hole as indicated in the photo; try a pushpin or small nail. I can get my 20 drops in about 5 seconds now.

I give my autistic daughter 3 drops a day. I have no idea why but it improves her mood. Originally I bought the product because others who have reviewed it said that dental plaque was cut down after using it. I don't see plaque dissolving but I believe that it is likely that now after about 4 months of usage it may be a contributing factor to preventing further plaque build up on my daughter's teeth and less swollen gums. I will continue to use this because of the dental situation but even more so because of her improved moods. Initially when I gave her 15 drops as directed she did well but after about 2 weeks she started getting irritable so I stopped and worked our way back up to 3 a day. This seems to work for her. I put it inside her breakfast foods and I take a drop a day myself. At times I take vitamin D3 so K2 is essential. By the way, my daughter had been taking 1 or 2 of a different brand's mk-7 at about 90mcg daily with no effect. I wish there were more research out there about K2. I have tried to research scholarly health articles online and there is definitely an effect that mk-4 has that is different from mk-7. Maybe taking both is good but we won't go without this one. Update: I had the dentist's clean the plaque off of my daughter's teeth 6 months ago and there has been no return. When I made my son in charge of preparing my daughter's breakfast he started forgetting to put the vitamin k2 drops in (now only 2/day). For about a month her behavior deteriorated. I once again reminded him and sure enough her behavior improved again after resuming the k2 drops. She also takes magnesium and riboflavin

I can't say enough good things about Thorne's Liquid K2. It is the MK-4 type of K2, which is the MOST DIFFICULT to find, mainly because it's the most expensive to make (which is why you find ALL the manufacturers seriously "PUSHING" MK-7, which is easier and cheaper to produce), but MK-7 converts to K1 and K2, which is very, very BAAAAAD for someone on blood thinners (anti-coagulants)!!!!! MK-4 does not convert to K1, so it is MUCH safer. If you are looking at this product, then you've either done your research on K2's (specifically from MK-4) beneficial impact on bone and cardiovascular health, or the American Diet's common deficiency in K2, or someone else has told you about it, so I'm not going to go into everything it has helped us with, but I will say it has made a big difference in our lives, and it's great to be able to find it in liquid form which makes it easy to take! I'm so happy to have found a source for it.

There is no disputing that Thorne makes very good supplements, and that the science supporting MK4 benefits is solid. I really wanted this product to work for me. I'll keep buying because it does work for my husband. For me just one drop causes painful cramping in the backs of my thighs, knees & calves. I get these same cramps if I eat potatoes, tomatos or anything with chile powder...a nightshade reaction. I have asked Thorne & other manufacturers what is their source of MK4. Thorne has never answered this question. Others say the source is Leaf Geraniol. Sounds innocent enough, like it might come from geraniums, right. Well, geraniol is also found in aged tobacco leaves. I believe the actual source is solanesol, and this does come from tobacco and other nightshade plants. Perhaps geraniol is another name for solanesol? I don't know, and can't seem to find any information anywhere on the net. I have nothing against tobacco leaves, other than the fact that they are part of the Nightshade family, and my body can't handle Nightshades. I gave 2 stars because this does work well for my husband. I would have given 3 stars if Thorne would just be honest about the source of MK4 so that those of us with sensitivities could make a more informed choice.

I’ve received vitamin today and on the bottle the expiry date is 08/12/2022. Taking into account that the product is from USA market, USA date format mm/dd/yyyy so it was expired in August. Even if the date format is different, it’ll expiry in a month which is nonsense as how can I use the whole bottle in a month. I would like the product to be replaced with the normal expiry date.