Key Differences: Vitamin K2 MK-7 vs. MK-4
Not all forms of vitamin K2 are alike. The two primary forms are menaquinone-4 (MK-4) and menaquinone-7 (MK-7). Here's how they compare:
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Source: MK-4 is synthetically produced in small amounts by the body from vitamin K1, while MK-7 is naturally found in fermented foods such as natto and is also derived from bacterial fermentation for supplements.
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Bioavailability: MK-7 has a much longer half-life (around 3 days) compared to MK-4 (a few hours), allowing more consistent blood levels with once-daily dosage. Studies indicate MK-7 is absorbed more efficiently and remains active in the body longer.
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Potency: MK-7 is more potent at activating osteocalcin (the protein that binds calcium to bones) and matrix Gla protein (which supports arterial flexibility) at lower doses.
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Clinical evidence: MK-7 has been extensively studied in human trials, particularly the patented MenaQ7 ingredient used in this supplement, showing significant improvements in bone mineral density and arterial flexibility.
Carlson chooses the MK-7 form to deliver superior absorption and sustained support for your bone and cardiovascular systems.
Why Vitamin K2 Is Essential for Your Health
Vitamin K2, also known as menaquinone, is a fat-soluble vitamin that contributes to the maintenance of normal bones and normal blood clotting. It achieves this by activating proteins that help bind calcium to the bone matrix, ensuring calcium is directed to where it is needed most. Unlike vitamin K1, which is primarily involved in blood clotting, vitamin K2 supports bone health and cardiovascular function. The MK-7 form, as found in this supplement, has a longer half-life and provides sustained support. Each soft gel delivers 45 mcg of vitamin K2, derived from the clinically studied MenaQ7 ingredient.
How to Choose the Right Dosage of Vitamin K2
The optimum dosage of vitamin K2 depends on individual needs. For general bone health, many experts recommend 45–100 mcg of MK-7 daily. Each Carlson soft gel provides 45 mcg, a well-researched amount for supporting normal bone maintenance when combined with calcium and vitamin D. Higher doses may be considered for those with specific health concerns, but it is always advisable to consult a health care professional before starting supplementation.
Who Should Consider a Vitamin K2 Supplement?
While a balanced diet should provide adequate vitamin K2, certain groups may benefit from supplementation. These include postmenopausal women, older adults, individuals with osteoporosis or low bone density, those on long-term medications such as antibiotics or statins, people with digestive disorders affecting fat absorption, and vegans or vegetarians with limited dietary sources. If you fall into any of these categories, a high-quality vitamin K2 supplement like Carlson's MK-7 can help support your nutritional intake.
Potential Side Effects and Safety
Vitamin K2 is generally well tolerated at recommended doses. The most important consideration is its interaction with anticoagulant medications like warfarin; always consult your doctor if you take these. Some individuals may experience mild digestive upset, whilst this is uncommon. Each batch is laboratory tested for purity and potency. As with any supplement, store in a cool, dry place and keep out of reach of children.
Frequently Asked Questions
Can I take vitamin K2 with vitamin D and calcium?
Yes, in fact, these three nutrients work synergistically. Vitamin D enhances calcium absorption from the gut, while vitamin K2 directs that calcium to the bones. Taking them together is a common approach for bone health regimens.
How long does it take to sealed results?
Vitamin K2 levels build up over time. Studies using MK-7 show improvements in bone markers within several weeks to months, but changes in bone density typically require sustained supplementation for at least one year.
Is this product suitable for vegans?
Carlson Vitamin K2 MK-7 soft gels likely contain gelatin (from animal sources), so it may not be vegan. Cheque the product labelled for specific ingredients. Vegan alternatives often undertake plant-based capsules.
What is MenaQ7?
MenaQ7 is a patented, natural form of vitamin K2 as MK-7 derived from chickpea fermentation. It has been used in multiple clinical trials demonstrating its bioavailability and effectiveness for bone and cardiovascular health.
This product is not intended to diagnose, treat, or prevent any disease.