Vitamin K1

What is Vitamin K1?

Vitamin K1, also known as phylloquinone, is a fat-soluble vitamin that plays an important role in various biological processes in the body. It is primarily found in green leafy vegetables such as spinach, kale, and broccoli, as well as in certain vegetable oils.

Relation to related substances

There are different forms of vitamin K, with Vitamin K1 (phylloquinone) and Vitamin K2 (menaquinone) being the most well-known. While K1 mainly comes from plant sources, K2 is primarily produced by bacteria and found in animal products and some fermented foods. These two forms have different biological functions and are present in various tissues in the body in differing amounts.

Forms in dietary supplements

Vitamin K1 is available in various forms of dietary supplements, including capsules, tablets, and powders. Capsules are the most common form and make dosing straightforward. Powder form can also be popular for those who prefer to mix their vitamin K1 with drinks or smoothies. Sublingual forms are less common for vitamin K1 but may be found in specialised products.

What to typically see on the label

When reading the label on a dietary supplement containing vitamin K1, it is important to note the amount of vitamin K1 listed, often in micrograms (mcg). Many supplements contain vitamin K1 in doses that vary, but common amounts can range between 50 and 200 mcg per serving. It is also worth checking for other ingredients and any allergen information.

Safety and precautions

Generally, vitamin K1 is considered safe when taken in recommended amounts through diet or supplements. However, there are certain situations where it may be important to consult a healthcare provider, especially if you are taking blood-thinning medication, as vitamin K can affect blood clotting ability. It is always best to follow the instructions on the product label and consult a doctor if you have questions regarding supplements.

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