Key takeaways
- Vitamin K1, or phylloquinone, is the fat-soluble plant form of vitamin K, and it is the form that dominates the everyday diet.
- Its main job is helping blood clot, working through vitamin K-dependent proteins such as prothrombin.
- Hoola delivers phylloquinone at 9 mcg per gram, or 90 mcg in the 10 g daily serve, published on the ARTG certificate.
- K1 comes from plants and K2 from fermented and animal foods, so we include both rather than choosing one.
- One 10 g scoop a day in cold water delivers the K1 dose. There is no half serve and no double serve.
What is vitamin K1, and what does it do in the body?
Vitamin K1 is a fat-soluble vitamin found in some leafy greens. Plants make it, and it is the form that shows up most in what people eat day to day. Chemists call it phylloquinone. Vitamin K as a whole is fat-soluble, which shapes how your body takes it in and stores it.
Its main role is helping blood clot properly. The name carries the job: vitamin "K" traces back to the Germanic word Koagulation, the ability to clot blood or prevent haemorrhage. Vitamin K helps make four of the 13 proteins needed for blood clotting, which stops wounds bleeding on and on so they can heal. Prothrombin is one of those vitamin K-dependent proteins, sitting directly in the clotting process.
Small nutrient. Big job. The kind of quiet work you never notice until it stops happening.
Where does vitamin K1 fit into a day that already feels full?
It fits in the gap between what you mean to eat and what you actually eat. Vitamin K is found in several foods. Vitamin K1 turns up in many leafy greens and soy, while K2 sits in meat and fermented foods and is made by gut bacteria. That is a fine plan on a slow Sunday. It is a harder plan on a Tuesday with back-to-back meetings and a servo sandwich.
Vitamin K1 does not have to be listed on nutrition facts labels, and it is still an important nutrient for human health. So it drifts out of view. You can be eating well enough and still not know where you land.
Hoola is a daily wellness drink with nootropics, adaptogens, vitamins and minerals to support energy, focus and mental clarity. The K1 sits in there under a straightforward listed claim: help prevent dietary vitamin and mineral deficiency. We do not chase intensity or burnout. We support regulated energy, clear thinking and capability that lasts. Steady in mind, clear in thought, energised in action.
What form and dose of vitamin K1 does Hoola use?
Phytomenadione, at 9 mcg per gram and 90 mcg in the 10 g daily serve. In milligrams, 90 mcg is 0.09 mg. The listed indication is to help prevent dietary vitamin and mineral deficiency.
Hoola is a Listed Medicine on the Australian Register of Therapeutic Goods, AUST L 508472, with an ARTG start date of 8 August 2025 and Hoola Australia Pty Ltd as sponsor. The certificate lists all 27 active ingredients with exact quantities per gram. Every per-serve figure is the per-gram figure times ten. Both are published.
For the other micro-dosed actives in milligram terms: biotin 3,000 mcg = 3 mg, folate 890 mcg = 0.89 mg, chromium 400 mcg = 0.4 mg, potassium iodide 200 mcg = 0.2 mg, selenomethionine 150 mcg = 0.15 mg, molybdenum 80 mcg = 0.08 mg, vitamin B12 50 mcg = 0.05 mg, vitamin K2 50 mcg = 0.05 mg, and vitamin D3 25 mcg = 0.025 mg, which is 1,000 IU.
Why did Hoola choose phylloquinone as the K1 form?
Because phylloquinone is vitamin K1. The naturally occurring forms of vitamin K are a set of vitamers known as vitamin K1 and vitamin K2. In plants, the only molecular form of vitamin K that matters is phylloquinone. Bacteria make a different family, the menaquinones. Choosing K1 means choosing phylloquinone.
There is a third label in circulation. Menadione, vitamin K3, is a synthetic compound used widely in animal husbandry, and it is a provitamin that has to be converted to menaquinone-4 to become active. Hoola uses active and bioavailable forms wherever possible, in line with Australian quality manufacturing standards. Phytomenadione is the K1 that appears on our ARTG certificate, and the quantity beside it is the quantity in the scoop.
Hoola is manufactured in Australia by BJP Laboratories Pty Ltd in Yatala, Queensland, with Australian laboratory testing. Built here, backed by science, blending modern nutrition with nature's brightest ingredients.
Is K1 different from the K2 in the same formula?
Yes. They are two branches of the same vitamin family, and they arrive from different places. Vitamin K1 comes from plants. Vitamin K2 is the name for a range of forms collectively called menaquinones. Menaquinones are mostly made by the human gut microbiota and turn up in fermented foods and animal products.
K2 is not one molecule. It is a group of several different molecules, identified by the length of their side chains, running from MK-2 to MK-14. Those side chains differ in length from 1 to 13 repeats of 5-carbon units. The two K2 forms used most often in nutritional supplements are MK-4 and MK-7.
Hoola carries menaquinone 7 at 5 mcg per gram, 50 mcg in the 10 g serve, for bone and cardiovascular health. Alongside it sits phytomenadione at 9 mcg per gram, 90 mcg per serve. Different sources in the diet, different structures, both in one scoop. We did not make you pick.
How does vitamin K1 fit the rest of the 27-ingredient formula?
It sits in the bone and structural corner of the formula, next to nutrients doing related work. Multiple proteins important for bone and blood vessel health need vitamin K to function properly. Osteocalcin is one of them, a protein that requires vitamin K to produce healthy bone tissue. Vitamin K itself is found right through the body, including the liver, brain, heart, pancreas and bone.
Think of the formula as a crew rather than a queue. Vitamin D3 supports calcium absorption, bone strength, muscle and immune function. Manganese supports bone formation. Vitamin K2 supports bone and cardiovascular health. Vitamin K1 helps prevent dietary vitamin and mineral deficiency. Four ingredients, one structural theme, all disclosed to the microgram.
Where a traditional supplement lifts calm or energy on its own, Hoola blends TGA listed nutrients, nootropics and adaptogens to support the dual state modern life asks for. Hoola Daily Multivitamin is designed as a single, balanced daily dose, not a collection of separate supplements. The value sits in how the ingredients work together.
Who tends to care about the vitamin K1 in a daily formula?
People who read labels before they buy. Vitamin K1 supplements are more commonly available than K2 and may suit general health support. Vitamin K supplements come in various forms, including tablets and capsules, to support bone health and blood clotting functions. Anyone who has stood in a pharmacy aisle comparing those boxes ends up asking the same question: how much am I actually getting, and does it stack with everything else I take?
Hoola is for someone looking to support their body and mind with a premium multivitamin. Someone who wants more out of life, more balance, more adventure and more support. For people who want to perform without the crash.
Buying the ingredients separately runs to 20+ supplements, over $250 a month in separate products and 15+ capsules a day. Hoola is $3.30 a day on subscription. That matters, because most supplements get abandoned by week two. A pile of bottles is a chore. One scoop is a habit.
How do you take vitamin K1 in Hoola?
You drink it. Mix one 10 g scoop into 300-400 ml of cold water each morning, and that serve carries the 90 mcg of phytomenadione. There is no half serve, no double serve and no weekly total. Hoola is one 10 g scoop a day.
Take it in the morning or early afternoon. Keep it away from bedtime, because the formula carries 100 mg of caffeine per serve.
Give it time. Adaptogens may take 4 to 6 weeks for their full benefits. The 150 g pouch is two weeks, which is enough to see how you feel. Consistency over intensity. Most of our customers feel the biggest benefits with consistency. One scoop, one glass of cold water, one fewer thing to think about.
Frequently asked questions
What are the best sources of vitamin K1?
Green leafy vegetables. The main type of vitamin K is phylloquinone, found in greens such as collard greens, kale and spinach. Vitamin K1 also appears in soy, while vitamin K2 sits in meat and fermented foods and is made by intestinal bacteria. Vitamin K is found in several foods overall.
Do vitamins K1 and K2 do the same thing?
Largely, with differences. Vitamin K comes in two forms, K1 and K2. They perform many of the same functions in the body, and they also have subtle differences. They also come from different plates: K1 from certain leafy green vegetables, K2 from animal foods. In Hoola, vitamin K2 carries the bone and cardiovascular health support, and vitamin K1 carries the deficiency prevention claim.
What is vitamin K?
Vitamin K is the family name for a series of essential fat-soluble compounds. They are needed for the chemical modification of a small group of proteins with calcium-binding properties, known as vitamin K dependent proteins or Gla proteins. Being fat-soluble shapes how the body absorbs and handles it.
What other names does vitamin K1 go by?
Phylloquinone is the main alternative name for vitamin K1. On the Hoola ARTG certificate it is listed as phytomenadione. Vitamin K exists as several vitamins with different chemical structures: K1, K2 and K3. The K2 family goes by menaquinones, written as menaquinone-n or MK-n, where n is the number of 5-carbon units, from MK-2 to MK-13. K3 goes by menadione, a synthetic provitamin used in animal husbandry that needs converting to menaquinone-4 to be active.
What forms do vitamin K supplements come in?
Tablets, capsules and liquids. Vitamin K supplements are available in various forms, including tablets and capsules, to support bone health and blood clotting functions. The range covers different preferences and absorption needs. Liquid formulations exist too, and may suit people who find tablets hard to swallow. Both vitamin K1 and vitamin K2 are used in nutritional supplements. Hoola is a listed medicine in an oral powder dosage form, so the K1 arrives dissolved in your morning glass.
What is vitamin K1 used for?
Blood clotting, first and foremost. Vitamin K1 is primarily responsible for helping your blood clot. Vitamin K helps make four of the 13 proteins needed for clotting, which stops wounds from bleeding continuously so they can heal. Limited research has looked at vitamin K1's effects on other areas of wellness, including bone health. In Hoola, the listed indication for vitamin K1 is to help prevent dietary vitamin and mineral deficiency.
What are vitamin K's main reported benefits?
Blood coagulation, bone metabolism and vascular health. Vitamin K helps make various proteins needed for blood clotting and for building bones. It is most often used for cardiovascular health.
How much vitamin K1 do people usually take?
Reported phylloquinone doses run from 0.1 to 10 mg per day, which is 100 to 10,000 micrograms per day. The health benefits of vitamin K1 appear at daily amounts of several hundred micrograms to a few milligrams. For vitamin K, guidance uses an adequate intake rather than a recommended dietary allowance, because there is not enough evidence to set an RDA. The AI amount is estimated to ensure nutritional adequacy. Hoola sits at 9 mcg per gram and 90 mcg per 10 g serve. Every per-serve figure is the per-gram figure times ten, and both are published.
What do sources say about high vitamin K intakes?
Vitamin K is broken down very quickly and excreted in urine or stool. Because of that, it rarely reaches toxic levels in the body even with high intakes, unlike some other fat-soluble vitamins.
Is vitamin K1 taken alongside vitamin D?
Yes, that pairing is common. Some supplements combine vitamin K with complementary nutrients such as vitamin D3 to support bone and cardiovascular health. Hoola runs the same pairing. Colecalciferol as Vitashine vegan vitamin D3 sits at 2.5 mcg per gram, 25 mcg per serve, supporting calcium absorption, bone strength, muscle and immune function. Phytomenadione sits at 9 mcg per gram, 90 mcg per serve. Same scoop, both published.
Which foods are highest in vitamin K1?
Plants. Vitamin K1, also known as phylloquinone, is widely found in plants. Green leafy vegetables such as collard greens, kale and spinach carry it. There is little information about how well phylloquinone is absorbed from various foods.
Always read the label and follow directions for use.
