2014年3月30日 · Vitamin K2 in the MK4 form is very safe and patients have been given up to 135 mg a day in treatment. This doesn't work any better than the 45 mg per day in three doses of 15 mg with meals. When given with high doses of Vitamin D, MK4 is very effective at lowering artery calcification and improving bone strength.

2014年3月21日 · The MK4 form of vitamin K2 has a very good record, its the Mk7 form of vitamin K2 made by bacteria that causes most of the reported symptoms. It would be hard to be allergic to regular MK4 as the body makes that! So MK4 should be safe. Magnesium is commonly sold as the oxide form which does act (severely) like Maalox in doses over 100 mg!

2014年11月21日 · We had some bad side effects, with taking a daily amount of 500 mcg. of Vit. K2 (MK-4 form), and 1,000 I.U. of Vitamin D3 (both made by Thorne). Our bad side effects included: --feeling spacy at times (I dropped things more, and forgot some things more, and hubby also felt spacy at times) --felt slight vertigo (dizziness)--both of us felt this

2017年9月6日 · MK4 is known to be much lower in side effects at high doses and its actually been safety tested in Japan trials at 135 mg per day! There have been seven separate successful trials with MK4 vitamin K2 showing reduction in bone breakage rates of 80% in the elderly.

2014年7月25日 · These prickly skin effects might be due to a passing virus too. The MK4 form of vitamin K2 is known to be lower in side effects than the MK7 form and more successful in research in Japan at reducing the rate of bone breakages experienced by elderly patients.

2012年9月26日 · hi I have been taking MK7 for a month now. i only take 50mcg per day. I need to take it early with oil . Later in the day interferes with my sleep. Also it can cause heart arrhythmia in larger doses. So far I see no side effects when taken as previously stated. Scriptures

2019年4月25日 · Knitter - I agree that D3 and K2 are probably not causing the constipation. People with IBS can have some really picky digestive issues, but the problem probably is calcium, other minerals like iron, or medication (especially narcotic pain …

2011年7月22日 · Also, it is said that these ill effects come about if you take Vitamin K2-7 greater than 45 mcg, and if you stay within this limit then nothing bad happens. The other side effects of Vitamin K2-7 are said to be a state of excitement and exhilaration and also its accompanying sleeplessness, which are not that serious.

2017年4月27日 · Usually its the MK7 vitamin K2 that is identified as keeping people awake at night. About 30% of people are sensitive to MK7 and react with anxiety, sleeplessness, and a thumping heart beat. The Carlson 5 mg is supposed to be only MK4 which generally does not have this side effect.

2012年12月13日 · As for Vitamin A, Dr. Kate in "Vitamin K2 and the Calcium Paradox" says relatively little beta-carotene gets converted to vitamin A, and it's important to take retinol, which is not easy to find in stores. I found Nature's Plus 10,000 iu …