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Seeking Health Vitamin D3 + K2 drops – 30ml
$44.80
Vitamin D and K2 supplement: Cholecalciferol (D3) and menaquinone-4 (MK4 K2) in olive oil.
Seeking Health liquid drops formula with olive oil carrier for fat-soluble nutrient delivery. Liquid drops allow flexible economical dosing and suit those who prefer not to swallow capsules.
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What is Seeking Health Vitamin D3 + K2 Drops and who is it for?
Vitamin D3 + K2 Drops is a two-nutrient liquid formula combining cholecalciferol (vitamin D3) and menaquinone-4 (MK4, a form of vitamin K2) in an olive oil base. It’s designed for anyone who wants flexible, easy-to-adjust dosing of these two fat-soluble nutrients without swallowing capsules. The liquid format also makes it practical for children aged one and up, and for adults with low stomach acid or absorption concerns with solid forms.
These two nutrients are commonly paired because vitamin D3 and K2 work together in calcium-related pathways. People who spend most of their time indoors, live in low-sunshine climates, are over 50, or have lab results showing low vitamin D levels are among those who commonly seek out a combined D3/K2 supplement. The drops format makes it easier to adjust serving size as needed and to give to children who can’t swallow tablets or capsules.
Fairfield Nutrition Thoughts
Vitamin D insufficiency is genuinely common in Australia despite the sunshine, particularly in people who work indoors, use sunscreen consistently, have darker skin, or are over 50. The pairing with K2 as MK4 reflects a well-established nutritional rationale: vitamin D3 and K2 share roles in calcium metabolism pathways, and supplementing one without attention to the other is a gap worth addressing. The liquid format makes this accessible for a wider range of people, including children and those who struggle with capsule absorption.
The evidence base for vitamin D3 in immune function, bone tissue health, and mood-related pathways is among the strongest in nutritional medicine. K2 as MK4 has a shorter half-life than MK7 but is well-researched and appropriate for daily use. The 900-serving bottle size is genuinely practical for families or long-term daily use.
Why This Formulation / How It Works
Most vitamin D supplements come as capsules or tablets, which creates two problems: you can’t easily adjust the dose, and people with absorption issues or low stomach acid may not get full benefit from solid forms. These drops solve both. One drop delivers 1,000 IU of D3 and 50 mcg of K2 as MK4, so you can take one drop or several depending on what your healthcare provider recommends. The olive oil carrier is a practical choice for fat-soluble vitamins, which require dietary fat for absorption. Taking these drops with or after a meal works, but so does taking them on their own given the oil base.
The MK4 form of K2 used here is worth understanding. There are two main forms of supplemental K2: MK4 and MK7. MK7 has a longer half-life in the body and is often preferred for once-daily dosing in capsule products. MK4 has a shorter half-life but is the form most studied in bone tissue research and is the naturally occurring form in animal-derived foods. For daily liquid dosing, MK4 at 50 mcg per drop is a reasonable and well-researched choice.
Role in Calcium Metabolism Pathways
Vitamin D3 is involved in calcium absorption in the intestine, where it facilitates uptake of dietary calcium. Vitamin K2 is a cofactor for proteins involved in directing calcium within the body, including osteocalcin in bone tissue and matrix Gla protein in vascular tissue. These two nutrients are involved in complementary steps of the same broader calcium-related pathway, which is why they are commonly combined in supplementation protocols.
Vitamin D3 in Immune and Mood Pathways
Vitamin D3 functions as a precursor to a hormone-like compound (calcitriol) that interacts with vitamin D receptors found in most tissues, including immune cells. Research has identified a role for vitamin D3 in the activation of the TPH2 gene, which is involved in the first step of serotonin synthesis. Immune cells, including T cells and macrophages, express vitamin D receptors, and D3 is involved in normal immune cell activity.
When to Consider This
This liquid formula makes sense if you’re:
- Someone who spends most of their time indoors or lives in a low-sunshine climate and wants to maintain vitamin D levels year-round.
- Over 50, where skin synthesis of vitamin D from sun exposure becomes less efficient.
- Looking for a D3/K2 supplement for a child aged one and up who can’t swallow capsules.
- Someone who prefers flexible dosing and wants to adjust their vitamin D intake based on periodic lab testing.
- Working with a healthcare provider who has identified low vitamin D levels on blood testing.
- Someone with absorption concerns around solid supplements, including low stomach acid or post-bariatric surgery.
Supplement strategy: This is a foundational supplement suitable for daily long-term use. Seeking Health recommends pairing with magnesium (such as Optimal Electrolyte or Optimal Magnesium), as magnesium is involved in vitamin D metabolism. Periodic blood testing of vitamin D levels is advisable to guide appropriate dosing over time.
⚠️ Not suitable for: People taking blood-thinning medications without first consulting their healthcare professional (this product contains 50 mcg of vitamin K2 per drop). Not recommended as a daily supplement for children under one year. Pregnant or breastfeeding women should check whether their prenatal supplement already provides D3 and K2 before adding this product.
How to Use
The standard serving is one drop taken by mouth, with or without food, any time of day. Each drop delivers 1,000 IU of vitamin D3 and 50 mcg of vitamin K2 as MK4. Because this is a liquid, you can adjust the number of drops based on your healthcare provider’s recommendation. Seeking Health notes safe upper daily limits of 3,000 IU for children aged 4 to 8, and 4,000 IU for those aged 9 and above, which is useful context for family use.
The bottle contains approximately 900 drops (900 servings at one drop each), making it a long-lasting supply for daily use. For children aged one and up, every-other-day dosing is suggested to stay within safe intake ranges. Dispense drops directly into the mouth or onto a spoon.
Seeking Health recommends using this alongside a magnesium supplement such as Optimal Electrolyte or Optimal Magnesium, as magnesium is involved in vitamin D metabolism pathways. Vitamin D3 + K2 Drops can be used independently of these products.
Ingredients
Per 1 drop (approx. 0.033 mL):
Vitamin D3 (as cholecalciferol) — 1,000 IU (25 mcg)
Vitamin K2 (as menaquinone-4, MK4) — 50 mcg
Other ingredients: Olive oil
Allergen information: Free from common allergens. Suitable for vegetarians. Suitable for bariatric, methyl-sensitive, pregnant, and breastfeeding individuals (consult your healthcare professional regarding dose).
Common Questions
Why does this use MK4 rather than MK7 for the K2?
MK4 is the form of K2 most concentrated in animal tissues and has the largest body of research in bone tissue studies. MK7 has a longer half-life, which makes it convenient in once-daily capsule products. For a liquid taken daily, MK4 at 50 mcg per drop is a well-researched and appropriate choice. Both forms are legitimate; the difference is primarily in half-life and research context.
Can I give this to my child?
Yes, Seeking Health states this is suitable for children aged one and up. For children aged one to three, every-other-day dosing is suggested to stay within safe intake ranges. For children aged four to eight, the safe upper daily limit is 3,000 IU; for nine and above, 4,000 IU. One drop delivers 1,000 IU, so dosing is easy to adjust. Always check with your child’s healthcare provider if you’re unsure.
I’m on a blood thinner. Can I still take this?
Talk with your healthcare professional before using this product if you’re taking anticoagulant medications. Vitamin K affects clotting pathways, and your prescribing doctor needs to know you’re taking 50 mcg of K2 per drop so they can advise appropriately.
How often should I test my vitamin D levels?
Periodic testing is a good idea, particularly when starting supplementation or adjusting dose. Dr. Ben Lynch at Seeking Health suggests a target range of 30 to 50 ng/mL, though your healthcare provider may have a different target depending on your individual circumstances. Testing once or twice a year is a reasonable starting point for most people on daily supplementation.
Warnings & Storage
Do not use if: Under one year of age. Consult your healthcare professional if pregnant or breastfeeding before adding this to your routine (many prenatal formulas already include D3 and K2).
Cautions: If you are taking blood-thinning medications (anticoagulants), speak with your prescribing healthcare professional before use. This product contains 50 mcg of vitamin K2 (MK4) per drop. High-dose vitamin D supplementation may contribute to elevated blood calcium levels; if your vitamin D levels test high, ask your doctor to also check blood calcium.
Storage: Store in a cool, dry place away from direct sunlight. Keep out of reach of children.
Always consult your healthcare professional before use if you have any pre-existing conditions or are taking medications.
| Weight | 0.04 kg |
|---|---|
| Dimensions | 3 × 3 × 12 cm |
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