You also have the option to opt-out of these cookies. A study done with lab mice found that the uptake of vitamin K was reduced by approximately half by vitamins A, D and E indicating there is competition for absorption. Why might we have a K2 deficiency compared to the ancestral environment? Theres also MK-5, MK-8, and MK-9 however its not widely used as a supplement and theres more research needed. (11). (2). New York Hospitals are Using Vitamin C to Treat . I have been diagnosed with osteoporosis. While pregnant and breast-feeding, 90 mcg should be consumed daily. Given that theres no harm in taking it in the morning I personally take my Vitamin D3 in the morning even when theres no high-quality evidence for it. [14] Spinach and kale contain K1 and not K2. Vitamin D toxicity might progress to bone pain and kidney problems, such as the formation of calcium stones. I am new to this site and have a question that, hopefully, someone can help with. I have been taking Vit K2 for years, thinking that as long as it was K2, that's all I had to know. Feel sick after taking vitamin D3 plus k2, What You Need to Know About Vitamin D3, K2, Calcium and Magnesium. Some preliminary research indicated that changes in serum osteocalcin and insulin are tied to vitamins D3 and K2 deficiencies and that these vitamins significantly decrease glucose levels in T2DM. (maybe Christiankl can comment here). I have done a lot of research and it appears to me that Vitamin K2 is safe to take and is actually beneficial. What say you? Dimitrios T. Papadimitriou argues in The Big Vitamin D Mistake that 10 000 IU should be consumed to reach the 40 ng/ml 25(OH)D blood level and that due to statistical errors its assumed in the official guidelines that less Vitamin D3 supplementation is required to reach that level. D3, boron, silica, etc. Children under 12 need just 45 micrograms per day. I'm trying to find studies that show the effect of "low" 25-0H vitamin D levels, what happens when supplementing with vitamin K2. Feel free to report back what they told you, so that other people can share in the knowledge. So my question is, do you take 45mg - i.e. Vitamin K helps your blood to clot (thicken to stop bleeding). Any formulation that includes D3 can be improved by K2," says Jrg Bttinghaus, Vice President Kappa Sales and Marketing. Create an account to follow your favorite communities and start taking part in conversations. Obviously, calcium and K2 supplements are two different things. I believe that for two reasons. Mines all combined in one capsule, so I take it after eating breakfast or lunch. This cookie is set by GDPR Cookie Consent plugin. Blood may be seen in the urine or stool, or stools may be tarry black. Accordingly, subjects in the Rotterdam Study with the highest vitamin K2 intake consumed more total and saturated fats and also had lower total cholesterol values and higher levels of heart-protective HDL cholesterol. And a 2015 study shows that fat-soluble vitamin deficiency is also strongly associated with cardiovascular disease. New comments cannot be posted and votes cannot be cast. The mechanism by which it is thought that vitamin K may prevent coronary artery calcification is via activation of matrix-gla protein (MGP). I do take cod liver for it's vit A retinol content, so I personally don't take either my K2 or D3 with this, again for fear of them competing with each other. I have not really been sure how much MK4 to take, so I just happened on 8 drops of the liquid MK4 (8 mcg) twice a day. It would be good to have more research to get more clear about MK-4 bioavailability. for all people, who take up to 2500 IU vitamin D per day. http://www.westonaprice.org/abcs-of-nutrition/175-x-factor-is-vitamin-k2 It's unclear to me that uptake is a measure that has to be optimized for. That's a bit over the recommended minimum of 30 ng/ml but not enough to get over the inherent error of the essay. The cookies is used to store the user consent for the cookies in the category "Necessary". Do you have any reason to believe intestinal flora does not produce enough K2? About the only independent variable appearing to cause permanent change in the gut is dietary change, but did you know that your microbiome and microflora are drug manufacturers? Ideal timing. I didn't try K2 supplement, but I've just googled and turns out spinach and kale have a lot of K, and I eat a lot of those. . . Given the current research, it seems sensible to me to go with pure MK-7 supplements. Grass-fed butter: 1 tablespoon: 3 micrograms (2 percent DV) Sour cream: 2 tablespoons: 2.7 micrograms (2 percent DV) Cream cheese: 2 tablespoons: 2.7 micrograms (2 percent DV) The more vitamin K1 an animal consumes from its diet, the higher the level of K2 that will be stored in the tissues. Dr. Berg D3 & K2 Vitamin is backed by our 30-day money-back . Do NOT follow this link or you will be banned from the site! I would ask a doctor or pharmacist. I have just read exactly the same thing, K2 away from D3 and magnesium away from both if you also supplement. According to Sato et al that MK-4 has from supplements has no direct bioavailability coming to the conclusion MK-7 is a better supplier for MK-4 in vivo than MK-4 itself. Schurgers et all write however that he has unpublished data that suggest MK-4 bioavailability. I've been taking Sports Research K2 + D3 with coconut oil -- 100 mcg K2 and 123 mcg D3 -- nowhere on the bottle does it specify if the K2 is trans. (, Not only this, but decreased insulin sensitivity leads to chronic hyperglycemia and subsequent bone demineralization. Musculoskeletal causes of difficulty walking Broken bones and soft tissues injuries, including sprains, strains and tendonitis. My ng/ml 25(OH)D blood level a few years ago was 21 when I had breast cancer and subsequent mastectomy, even though I have lived in Greece for decades. Dear Christian KL MONDAY, April 2 (HealthDay News) Animals given high levels of vitamin K showed a 37 percent reduction in calcium buildup in their arteries, a new study finds. (. I already take magnesium and choline, and I take D3 in the morning, but that don't seem to help much. 1/ Vitamin C and B6. Taking both D3 and K2 together ensures that you're getting the most . The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". Bone loss: Taking Vitamin D3 with K2 has been shown to benefit people at risk of bone loss.Numerous studies have shown that low vitamin K causes reductions in bone mineral density (BMD) and increases fracture risk. Does anyone know if, when the doctor gives you a morning with breakfast, which is around an hour after taking my thyroid medication. This was a much larger effect than foods high in vitamin K1 ( 10 ). The effect of timing of Vitamin D supplementation. 4. The research was done in Japan with a single 1.5 mg dose of MK4 daily and they noted improvements similar to those gained on the 15 mg three times a day dose used in prior experiments. I have been searching for a suitable supplement but I am finding that many contain higher dosages than I w. I recently had a "physical" done by my GP (General Practitioner), Non lichen based D3 supplements have been found to contain toxic levels of D3 per pill. It's OK to drink green tea beveragessuch as matcha just don't do it with your iron supplements, Dr. Cooperman says; spread the . Are pumpkin seeds good for you calories? In cross-sectional and longitudinal studies, there is an association between serum vitamin D levels and hypertension, heart attack, heart failure, According to cross-sectional and cohort studies, a high vitamin K status is associated with lower cardiovascular risk as well as reduced coronary artery calcification. Vitamin K2 takes it from there, directing that calcium into your bones. How high is 10000 IU? These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc. Natto. Importance of Taking Vitamin D3 with K2. Mainstream researchers would say that's a lot as it's 250% of the RDA of D3. Sometimes bleeding in the stomach causes vomiting with blood. At the same time I also don't believe that any problems are going to arise from Vitamin C supplementation either alone or in combination with D3 & K2. I agree 100% with your last sentence! The only people who could get too much vitamin K are those taking the blood-thinning medication warfarin. A subreddit designed for discussion of supplements and nutraceuticals; for health, performance, or any intended (or not intended) purpose. If anyone who knows could be bothered letting me know whats already been said, probably multiple times, Id be really grateful. I take an all-in-one combination capsule of D3/K2/calcium from Dr. Mercola's website. I keep reading about Vitamin K2 with reference to MK4 and MK7. B vitamins include thiamin (B1), riboflavin (B2), niacin (B3), pantothenic acid (B5), pyridoxine (B6), biotin (B7), folic acid (B9), and cobalamin (B12), which can be taken with or without food. I am wondering if there is anyone who has personal experience with documented improvement. Experience a New Level of Wellness - Sign Up for the Portland Clinic of Natural Health Newsletter Today! Whenever you take vitamin D supplements, . I also read they should be taken separately so they don't compete. This website and its content is not to be used in place of the information provided by your physician or healthcare professional. Also, magnesium deficiency can negatively impact bone and muscle health. I'm not sure how much of a difference this makes though; taking it in the morning (with a not-fatty meal) is still enough to fix my deficiency. Never delay seeking advice or dialling emergency services because of something that you have read on HealthUnlocked. Pharmacists are generally trained to be able to tell you about drug side effects. However I wonder why taking the calicum and K2 should be, Separate since I read one purpose of the K2 is to help direct the calicum to the bones rather than having the calicum go to, arteries where lots of problems have been. The amounts of the other supplements you take are generally safe and are at doses which may be helpful -- depending . (, There are vitamin K2-dependent proteins that require vitamin D3 in order to be promoted in the body. I took about 2000-3000 IU, it's not that much, right? Vitamin K2 Side Effects Constipation or diarrhea. Both versions can be used to treat vitamin D deficiency, but D3 seems to be more effective than D2. Important note: If you regularly take vitamin D in form of a dietary supplement, for low vitamin D intake you should additionally take 100 mcg of vitamin K2 daily or, if you take 5,000 IU of vitamin D or more per day, take 200 mcg of vitamin K2 additionally each day, to ensure that calcium absorbed by vitamin D is not deposited in the arteries. These cookies ensure basic functionalities and security features of the website, anonymously. Women aged 19 years and over should consume 90 micrograms (mcg) a day, and men should have 120 mcg. I have been taking it for the last 5-years and feel it's really helpful with a lot of things, not just bone health. It not, what is the recommended dose of K2 for someone with osteoporosis who is also taking strontium citrate? I take all mine together, with the exception of Strontium Citrate. Humans produce Vitamin D3. But the question remains: How much should we take and how do we customize supplementation to the individual? Take one to three daily, depending on the dosage per capsule. Another name for 25(OH)D level is calcifediol (or 25-hydroxyvitamin D / calcidiol) while the substance we supplement or that our skin produces in response to UVB light exposure is cholecalciferol (or Vitamin D3). Both vitamins are fat soluble so need fat to be absorbed. Better Absorbed With Meals For this reason, it's recommended to take vitamin D supplements with a meal to enhance absorption. Boost your nutrition and get premium-quality vitamins D3 and K2 with Dr. Berg D3 & K2 Vitamin. While this isn't a meta-review it illustrates that plenty of people is strongly under the recommendation of the Endocrine Society. I take D3 as well, though I didn't know about the link between the timing of it and sleep, so thanks for that. Hello. by Dr. Ben Reebs | Jan 18, 2021 | Chronic Disease, Health, Minerals, Nutrition | 0 comments. (6). I was thinking of taking the 200, And cutting the other in half. You started estrogen hormone replacement therapy or birth control. Is 200 mcg of vitamin K2 too much? Can you please advise me which is the best form to take? That makes for multiple times a day eating some fat though if I take MK4 three times a day and vitamin D3 once a day. My main reason is that it seems that people who take a lot of Vitamin D3 but no Vitamin K2 show symptoms that correspond to Vitamin K2 deficiency and as a result it's prudent to suppelement K2 when supplementing Vitamin D3 seriously. The phase IV clinical study analyzes what interactions people who take Probiotic and Vitamin d3 have. Answer: You may want to cut back on the vitamin C. The required daily intake is not even 100 mg and if you already get that, taking another 500 mg or 1,000 mg may actually reverse vitamin C's ability to reduce the risk of cataracts, as noted in the Vitamin C Supplements Review. This formula delivers 125 mcg of vitamin D3, 2100 mcg of vitamin K and 1,000 mcg of iodine, which is essential for the production of thyroid hormones. Vitamin D3 5000 - highly-potent and pure vitamin D3. According to the Evaluation, Treatment, and Prevention of Vitamin D Deficiency: an Endocrine Society Clinical Practice Guideline: For clinical care, it appears that all current methodologies are adequate if one targets a 25(OH)D value higher than current cut points; for example, a value of 40 ng/ml (100 nmol/L) is without toxicity and virtually ensures that the individual's true value is greater than 30 ng/ml (75 nmol/L). These findings indicate that genetic predisposition to higher circulating vitamin K1 levels is associated with an increased risk of large artery atherosclerotic stroke. Thank you for the great article. Adults should ensure they are getting between 100 and 300 micrograms of vitamin K2 per day. It impairs clotting. Side effects. What do you mean with small amounts? We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. Thanks! It's an interesting and easy read, and also has lots of references. Nearly 19 million Americans take fish oil supplements and some 37 percent of us take vitamin D. Many may be motivated by research that has suggested these pills . D3 is the active form of vitamin D and is produced in the kidneys. Content on HealthUnlocked does not replace the relationship between you and doctors or other healthcare professionals nor the advice you receive from them. Additionally, our kidney turns calcifediol into calcitriol (1,25-dihydroxyvitamin D). Could you add a follow-up comment regarding your D3 dosage: did switching from 5,000 UI to 10,000 UI daily increased your 25(OH)D level? Thanks for any info you may add. Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet. k2, menaquinone 7 and the bottle says it's good for the bone building process. Going to start magnesium . Am I wrong? Yes, you should take D3 and K2 at the same time. My Vit. It appears that the efficacy of calcium and vitamin D can be enhanced by vitamin K2 supplementation. I've been taking mine separately because I thought they might compete for absorption. I have osteoporosis and my doctor is concerned about my taking Vitamin K, because it could thicken my blood. "Take Vitamin D3 and K2 separately Take your Vitamin K2 supplement with your dinner that includes dietary fat or at bedtime, 8 to 12 hours after you take your Vitamin D3. Are you sure you need vit D? This is not a complete list of side effects and others may occur. (, D3 not only enhances intestinal calcium absorption, but it is also well established that Vitamin D3 is essential to immune function modulation. Are your D3 and K2 in softgel form, liquid, oral spray, tablets or capsules? When should I take Vitamin D3 and K2? This calcification is strongly prevented by Vitamin K2 supplements. Story at-a-glanceIf you take supplemental vitamin D3, you also need to be mindful of taking extra vitamin K2 and magnesiumIt's important to increase your vitamin K2 intake when taking high-dose supplemental vitamin D to avoid complications associated with excessive arterial calcificationYou need 146% more vitamin D to achieve a blood level of 40 ng/ml (100 nmol/L) if you do not take . I'm like 80-90% sure it's D3, when I take it it gets worse, a few days after I stop it gets better. Oil-rich fish, such as salmon and herring, also contain vitamin D3. I know that K2 has an effect on blood clotting and there is a risk of blood clots while on hormones. I do agree that the image is misleading and I will look into updating the argument. Calcifediol moves some calcium from the bone to the blood and K2 is needed to put the calcium in the bones. Hospitals turn to high-dose vitamin C to fight coronavirus Nutraingredients. Nearly half of U.S. adults have some form of heart disease, according to the American Heart Association's latest statistical update, published in March 2019 in Circulation .The medication metoprolol (Lopressor, Toprol, Toprol XL) is one of the drugs commonly prescribed to treat heart-related concerns, according to the U.S. National Library of Medicine, including: Calcium supplements can interact with many prescription medicines, including antibiotics, bisphosphonates and high blood . I still believe that the thesis that evolutionary pressure lead people to develop dark skin while living near the equator in America is true, but it needs more sources. Buy Now. Many thanks for your help. Answer (1 of 6): Technically no, as we do it all the time in the way of food and multivitamin ingestion. The source you linked to says something different: The coefficient of variation (CoV) for UVB (Fig. The cookie is used to store the user consent for the cookies in the category "Other. As a guide, you should take 45mcg of Vitamin K2 per 1000 IU of Vitamin D3. We suggest this since some research shows that D3 is more effective if not taken at the same time as K2. van Ballegooijen AJ, Pilz S, Tomaschitz A, Grbler MR, Verheyen N. Dai Q, Zhu X, Manson JE, Song Y, Li X, Franke AA, Costello RB, Rosanoff A, Nian H, Fan L, Murff H, Ness RM, Seidner DL, Yu C, Shrubsole MJ. Thank you for writing this informative article. What foods is high in nitric oxide? I can only assume that the. This website uses cookies to improve your experience while you navigate through the website. I don't worry about it now and take what's convenient for that particular day, working around the other supplements I take. I took D3 with light breakfast, in the morning. Other Name: K2/D3. Vitamin K deficiency results from extremely inadequate intake, fat malabsorption, or use of coumarin anticoagulants. In a German study they found median 25(OH)D levels of 19.8 ng/ml. :). Warfarin works by making it harder for your body to use vitamin K to clot blood. It seems impossible to find anything with a higher dosage. (4), There are vitamin K2-dependent proteins that require vitamin D3 in order to be promoted in the body. In other words, this website and its content does not constitute professional medical advice. Our easy-to-swallow capsules are a convenient source of vitamins on the go. Vitamin K2 as MK-7 (90 mcg) My Experience, Thorne Vitamin K2 liquid- dosage thoughts, Caregivers - Caring for family and friends, Diseases, conditions and other causes of bone loss, Health insurance and prescription assistance, Organizations for information, activities and resources, Premenopausal women (ages 25-50) with osteoporosis, Prescription assistance and insurance issues. K2 manages your calcium. Should I take D3 and K2 at same time? If you're taking treatment for stomach acid, your provider may need to increase the dosage of your Synthroid. Intend to do another calcium score in 6 months time to see if there is a reduction. But opting out of some of these cookies may affect your browsing experience. Think of it this way: calcium is like a baton, and vitamins D3 and K2 are like runners in a game of relay baton. On the flip side it does not appear that vitamin K reduced the absorption of A, D and E. Confusion! D3 level was "22", with 20 supposedly being the low end Required fields are marked *. Just eat lots of natto, Japanese fermented soybeans which contains about 10,000 mcg K2-7 per 3.5 ounce serving. Saliva: Edibles can be detected in saliva for 1 to 3 days. Peptic ulcer disease. As a result I have decided to take MK4 (along with D3 etc) and it would seem to be sensible to start at a low dose of MK4. That can lead to bone weakening ( osteoporosis) and increased fracture risk. Medications and supplements. Better Absorbed With Meals For this reason, it's recommended to take vitamin D supplements with a meal to enhance absorption. and also I had bloods drawn, including my Vitamin D3 level. The well known Japanese studies show that 45mg is the amount required. Performance cookies are used to understand and analyze the key performance indexes of the website which helps in delivering a better user experience for the visitors. Press J to jump to the feed. The importance of Vitamin D Boosts Bone Strength. Research linking calcium supplements to heart attack and stroke caused many to take vitamin D supplements alone for prevention. Sunshine vitamin D helps with calcium absorption, while vitamin K is important for blood clotting and preventing calcification of the arteries. December 31, 2021 by Marian. (1) Iron is stored by a protein called ferritin, which is made by the liver, and so if ferritin is low, then Disclaimer: This website offers health, wellness, and nutritional information, and it is for your information only. I take Vitamin D3 and K2 which helps the D3 to be absorbed. Consult Your Naturopathic Physician Today. The cookie is used to store the user consent for the cookies in the category "Performance". The higher dosage of 200mcg is especially recommended for people who have a history of cardiovascular disease or osteoporosis in their families. Cholecystectomy is a common surgical procedure in which the gallbladder is removed, usually because of bile duct stones or gallstones. (To be on the safe side to cover all bases, I am taking a low-dose 45 mg of Vit K2 MK7 also). I however had to rewrite my post because it doesn't seem to be as easy. If they are oil based, this would usually be softgels and liquid, then they could be taken at the same time but also have some kind of dietary fat with them, eg fattiest meal of the day, full fat yogurt, cheese, toast and butter, etc, to make sure there is enough fat for both of them. Taking a Vitamin D3 supplement without K2 can have disastrous effect, as Vitamin D creates need for Vitamin K2 in the body. This can result in serotonin syndrome, which causes side effects like anxiety, sweating, confusion, tremors, lack of coordination and an accelerated heart rate. I thought the menaquinone 4 version was the correct one to get. Atli Arnarson makes the case in Is Vitamin D Harmful Without Vitamin K? Taking more than 1,000 mg of vitamin E per day can raise your risk for bleeding. Vitamin D is produced naturally by the body when exposed to sunlight, but as we don't get much of that between October and April it is recommended that Vitamin D supplement should be taken during those months at least. Vitamin K2. Well, the only place that I found in a "softgel" format which included: calcium, K2 (mk7), D3, magnesium, zinc, copper, and manganese. (, Also, magnesium deficiency can negatively impact bone and muscle health. View complete answer on drstevenlin.com Taking a Vitamin D3 supplement without K2 can have disastrous effect, as Vitamin D creates need for Vitamin K2 in the body. Phase IV trials are used to detect adverse drug . 1 glass little bottle: Vitamin D3, Can you please tell me which is the best form of Vitamin K2 to take? By clicking Accept, you consent to the use of ALL the cookies. As a result, I upped my daily D3 intake to 10000 IU which is maintenance tolerable upper limits recommended by the Endocrine Society Guideline. (1). On the flip side it does not appear that vitamin K reduced the absorption of A, D and E. Confusion! MK-7 exists in a trans- and a cis-form where only the trans-form is used by humans. Apparently he is one of the world's leading experts in micro-nutrients and dietary supplement science. From my perspective it however isn't a lot. While it is widely known that the two fat-soluble vitamins, D3 and K2, are central to bone metabolism and cardiovascular health, newer research indicates that D3 and K2 possess a synergy. However, studies involving supplements containing K1 or the MK-4 form of K2 tend to use very high doses (e.g., 500 mcg to 45,000 mcg), while studies . 100 mcg vitamin K2 per day: for healthy people under the age of 50, who do not take any additional vitamin D3. Ensuring a suitable daily intake of both key nutrients is key to achieving higher levels of wellbeing, and there are specific conditions for which supplemental intake is . I don't know if I need it, never took the blood test, I tried it based on all the artiles about how good it is and how most people are deficient in it. You need iron to help distribute oxygen to cellsit's vital for your energy. It can also cause testicular shrinkage and breast enlargement in men. I bought 3 packets o, Yesterday while shopping, I stood in front of a humongous array of vitamins and minerals searching for "Vitamin K2". I liked all the other ingredi, Hello, I'm in the UK and having done my research I decided to buy Carlson Labs, Vitamin K2, 5 mg, 180 Capsules from Amazon. The studies we have generally make the assumption that timing doesn't matter and blood 25(OH)D levels are the only interesting variable. That was a few weeks ago. If company doesn't write this on the bottle for new pills that would a negative signal for me. (, D3 is the active form of vitamin D and is produced in the kidneys. You shared a minimum of information. vitamin K2 came highly recommended for osteoporosis, even so before taking it I researched it thoroughly and everywhere they said vitamin K2 is beneficial for osteoporosis and the heart Because Vitamin D is fat-soluble, there's slightly better uptake if you take it with a relatively fatty meal or with milk. undefined will no longer be visible to you including posts, replies, and photos. Recommended daily intake is 120 . I started taking more calcium and D plus magnesium and MK-7. I dont ever take multivitamins and for some reason - well because I know you should take both K2 with D3 - I trusted that a D3/K2 combo would be ok. Silly me. Most people wont experience any effects from too much vitamin K. Several vitamins can be dangerous when you take too much of them, but for most people, vitamin K isnt one of them. My friend wants to include Vitamin K2 because research says that taking Vit D by itself can be dangerous: 200000ius per pill instead of 2000iu. It's in the scientific literature. [13] In a study, researchers also found that vitamin K supplements helped post-menopausal women maintain healthy bones. Nothing on this website constitutes the practice of medicine, nor can it be used to treat or diagnose any health issue or concern. Ask . We also use third-party cookies that help us analyze and understand how you use this website. And you don't . by Dr. Ben Reebs | Jan 18, 2021 | Chronic Disease, Health, Minerals, Nutrition | 0 comments. I asked about studies regarding K2 and D3 and it auto wipes? It must have, but by how much, and how fast? Brie and Gouda could be from milk that is not from grass fed animals since in these 2 types of cheese bacteria produces the K2. In this state 325mg of Ferrous gluconate (for example) separates and provides 65mg of eleme. I'll bet that no one has told you that Magnesium and Vitamin D should be taken together in order to avoid vitamin D side effects and to maximize absorption of both nutrients.Nutrients don't work alone, and when it comes to taking vitamin D, it's important that you take magnesium and vitamin D together and not JUST vitamin d alone in large doses as this can lead . There are several pathways by which vitamin D affects the cardiovascular system, such as by way of the renin-angiotensin-aldosterone system and vascular endothelial growth. You could still be K2 deficient if you get a lot of K2. If you take warfarin, make sure that the amount of vitamin K you consume from food and supplements is about the same every day. If you're guilty of reaching for the fresh orange when you feel the first signs of a sniffle, Westra suggests doubling up on a B6 supplement. Sandra Hearth is the creator and writer behind "Wellbeing Port", a blog dedicated to promoting healthy living and personal wellness. Insomnia can be caused by vitamin D doses that are too high for you, so you may want to investigate or ask a doctor about that possibility. I have read quite a bit regarding vitamin K2 on this discussion board. D3 not only enhances intestinal calcium absorption, but it is also well established that Vitamin D3 is essential to immune function modulation. Necessary cookies are absolutely essential for the website to function properly. If your levels are low, take Bulletproof Vitamins A-D-K for an easy way to up your vitamin D3, the form more easily utilized by your body. early signs of vitamin D overdose--weakness, metallic taste in your mouth, weight loss, muscle or bone pain, constipation, nausea, and vomiting.