Name: High-Strength Vitamin D3 & K2 MK-7 Complex (120 Capsules)
Rating: 4.97 (36 reviews)

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Trusted by Professional Athletes & Sports Teams Worldwide

Nutritional Science Backed Supplements formulated by experts, trusted by sports scientists, and used by athletes from The FA, Team GB, Premier League clubs, and international sports teams.

The same performance nutrition protocols that fuel elite athletes are now trusted by busy executives, active individuals, and healthy families to achieve their peak potential.

ABOUT High-Strength Vitamin D3 & K2 MK-7 Complex (120 Capsules)

Product Description

Vitamin D3 & K2 MK-7 Complex - 2000 IU Per Capsule, 4000 IU Daily Maximum

Amino Man’s Optimum Vitamin D3 & K2 MK-7 delivers a high-strength combination of vitamin D3 and K2 MK-7, designed to support normal immune function, bone health and muscle performance. Each capsule provides 2000 IU of vitamin D3, with the option to take two capsules per day for a full 4000 IU.

To further strengthen the formula, key minerals including magnesium, zinc, copper, manganese and boron are included, along with Bioperine® to assist with nutrient uptake.

Synergistic Vitamin D3 & K2 MK-7 Support

Vitamin D3 contributes to the normal function of the immune system and plays an essential role in the utilisation and absorption of calcium. K2 MK-7 complements D3 by supporting the maintenance of normal bones and assisting with healthy calcium metabolism. When taken together, these nutrients offer well-aligned support for daily physiological needs. The flexible dose of one or two capsules allows individuals to tailor their intake to personal requirements and lifestyle factors.

Key Mineral Support

Magnesium contributes to normal psychological function and supports the reduction of tiredness and fatigue.
Zinc contributes to normal cognitive performance, immune function and the maintenance of healthy hair, skin and nails.
Copper and manganese contribute to normal energy-yielding metabolism, bone health and connective tissue formation.

A Complete Complex for Everyday Vitality

Amino Man’s Optimum Vitamin D3 & K2 MK-7 is formulated with a broader nutritional profile than a standard vitamin D supplement. The blend of supportive minerals adds depth to the formula, contributing to normal energy production, cognitive function and skeletal maintenance. Boron provides an additional layer of support, and Bioperine® is included to enhance the utilisation of nutrients within the capsule.

The vegetarian capsule format offers a clean and convenient option for daily use. Each dose integrates smoothly into morning or evening routines, providing dependable support for individuals aiming to maintain resilience, energy and everyday health.

Quality, Consistency and Daily Assurance

Amino Man places strong emphasis on precision, sourcing and consistency. Optimum Vitamin D3 & K2 MK-7 is produced with careful attention to ingredient quality and balanced formulation. The combination of high-strength vitamin D3, well-studied K2 MK-7 and essential minerals offers comprehensive support for individuals seeking to maintain normal immune function, bone strength and overall wellbeing throughout the year.

With a flexible dosing range of one to two capsules (2000–4000 IU) per day, the formula provides personalised support. Always follow the recommended dose on the label. Add Vitamin D3 & K2 MK-7 to your supplement stack today.

Key Benefits

More Than Vitamin D – Formulated with essential cofactors, including K2 MK-7 and key minerals, to support the body’s natural utilisation of vitamin D.
Supports Normal Immune Function – Vitamin D3 and zinc contribute to the normal function of the immune system, helping maintain everyday resilience.
Bone & Joint Health Support – Vitamin D3, K2 and manganese contribute to the maintenance of normal bones and aid healthy connective tissue formation.
Comprehensive Mineral Support – Includes magnesium, zinc, boron, copper and manganese for broader nutritional coverage.
Enhanced Absorption – BioPerine® is included to assist nutrient uptake and utilisation.
Synergistic Formula – The combination of vitamins, minerals and cofactors is designed to work together in a balanced and effective way.
Flexible High-Strength Serving – Provides 2000 IU of vitamin D3 per capsule, with the option of a 4000 IU daily maximum for tailored support.
Outstanding Value & Quality – A broader formula than a standard vitamin D supplement, with K2 MK-7, key minerals and BioPerine® in each capsule.

Directions

Take 1–2 capsules daily with food, or as advised by your healthcare practitioner.

Disclaimer

This product should not be used as a substitute for a varied and balanced diet. If you are pregnant, breastfeeding, under medical supervision, or taking medication, consult your healthcare provider before use. Discontinue use if any adverse reactions occur. Keep out of reach of children.

Ingredients

Magnesium citrate, magnesium bisglycinate, zinc picolinate, boron AAC, manganese glycinate, copper bisglycinate, Bioperine®, cholecalciferol (vitamin D3), menaquinone-7 (vitamin K2 from natto).

Other Ingredients: Microcrystalline cellulose, natural rice extract (NuMag), vegetarian capsule.

Nutrition Information

Serving Size: 1 Capsule

Servings per Container: 120

Per Capsule Serving:

Vitamin D3 (Cholecalciferol) – 2000 IU (333% NRV)
Vitamin K2 (Menaquinone-7 from natto) – 75 mcg (80% NRV
Zinc (as Zinc Picolinate) – 5 mg (45% NRV)
Copper (as Copper Bisglycinate) – 0.5 mg (55% NRV)
Magnesium (as Magnesium Citrate & Bisglycinate) – 55 mg (13% NRV)
Manganese (as Manganese Glycinate) – 1 mg (43% NRV)
Boron (as Boron AAC) – 1 mg (†)
Bioperine® (Black Pepper Extract) – 2 mg (†)

† No NRV established.

Scientific Research

Vitamin D3 and K2 MK-7 are two of the most clinically important fat-soluble nutrients, and their combined use is supported by a growing body of research demonstrating synergistic benefits for immune function, bone health, cardiovascular health, and muscle performance.

1. Immune Function

Vitamin D3 contributes to the normal function of the immune system (EFSA-approved claim). Vitamin D receptors are expressed on virtually all immune cells. A meta-analysis of 25 randomised controlled trials (n=11,321) found that vitamin D supplementation significantly reduced the risk of acute respiratory tract infections, with the greatest benefit seen in those who were deficient.

Reference: Martineau AR et al. BMJ (2017). Vitamin D supplementation to prevent acute respiratory tract infections: systematic review and meta-analysis of individual participant data.

2. Bone Health — D3 & K2 Synergy

Vitamin D3 enhances intestinal calcium absorption, while K2 MK-7 activates osteocalcin — the protein that directs calcium into bone rather than soft tissue. A 3-year randomised controlled trial found that combined D3 and K2 MK-7 supplementation significantly improved bone mineral density and bone strength compared to D3 alone.

Reference: Knapen MH et al. Osteoporosis International (2013). Three-year low-dose menaquinone-7 supplementation helps decrease bone loss in healthy postmenopausal women.

3. Muscle Function & Physical Performance

Vitamin D3 contributes to the maintenance of normal muscle function (EFSA-approved). A meta-analysis of 17 randomised controlled trials found that vitamin D supplementation significantly improved muscle strength, particularly in individuals with low baseline vitamin D status.

Reference: Beaudart C et al. Journal of Clinical Endocrinology & Metabolism (2014). The effects of vitamin D on skeletal muscle strength, muscle mass, and muscle power: a systematic review and meta-analysis of randomized controlled trials.

4. Cardiovascular Health — K2 MK-7

K2 MK-7 activates Matrix Gla Protein (MGP), which inhibits arterial calcification. A landmark 3-year RCT found that daily K2 MK-7 supplementation (180 mcg) significantly reduced arterial stiffness and improved vascular elasticity in healthy postmenopausal women.

Reference: Knapen MH et al. Thrombosis and Haemostasis (2015). Menaquinone-7 supplementation improves arterial stiffness in healthy postmenopausal women.

5. Magnesium — D3 Activation

Magnesium is an essential cofactor for vitamin D metabolism. Without adequate magnesium, vitamin D cannot be properly converted to its active form. Research shows that supplementing both together produces greater improvements in vitamin D status than vitamin D alone.

Reference: Uwitonze AM, Razzaque MS. Journal of the American Osteopathic Association (2018). Role of magnesium in vitamin D activation and function.

Supplement Disclaimer

This product is a food supplement. It is not intended to diagnose, treat, cure, or prevent any disease. It is not a medicine and should not be used as a substitute for a varied diet and healthy lifestyle.

Vitamin D3 & K2 Blend

Love this vitamin

I avoided taking any vitamins until I met Matt. For years, I struggled with persistent aches and pains, especially after exercise. No matter what I tried, my body just wasn’t recovering, and discomfort became a constant part of my life. Over the past year, things got worse — chronic pain in my left shoulder, elbow, wrist, and the right side of my neck and shoulder. My body felt stuck.

Then I started taking a vitamin D with K2 supplement and within a month, the difference was incredible. The constant pain is gone. I’m back at the gym, playing paddle, running around — and best of all, pain-free, including in my right knee, which had always troubled me.

What frustrates me is how quickly people blame menopause for everything. Yes, our bodies change, but it’s not just about hormones — it’s about giving our bodies the right nutrients. I’m 52, ten years into menopause, and not on HRT — and I feel better now than I have in years.

If you’re struggling, don’t just accept it. Speak to Matt — he’s incredibly knowledgeable and has truly changed my life. If you’re dealing with aches, fatigue, or just don’t feel like yourself, give this product a try. You deserve to feel strong, healthy, and pain-free at every age. Matt is now helping my 81 year old mum. X

Vitamin D3 & K2 Blend

Still using the great subscription service from Aminoman to get my daily boost of Vitamin D. Since I have been taking them I have noticed I seem to catch fewer colds. I know correlation isn't causation, but this blend appears to work for me.

Improvement seen

I noticed that I wasn’t absorbing calcium well and my mood was low so it was time to take action.
A few weeks of taking D3 and K2, I’m feeling more like my usual cheerful self and generally more balanced.

12 weeks post titanium hip replacement

Added this to my daily supplements and after 7 days my energy levels and post rehab/conditioning my usual soreness either from the surgery or the training appears to be absent my desire to get through sessions is upbeat and I’m enjoying my workouts!

Recovery and protection

These are great after training to help with recovery. My wife and I take these from autumn to spring to keep well. My wife’s mild asthma wheezing has vanished each autumn for the last two years that she has taken these, together with the multivitamins and fish oils. Great quality, no taste or repeating, excellent customer service and delivery. Aminoman products certainly deliver results for me.

VitD3 & K2

Trusting in its effectiveness and encouraged by our son,Paul Hampton ,who has great faith in Matt Lovell.
Jackie & John Hampton

VitD

Staple daily supplement, especially for the UK winter!

Vitamin D3 & K2

5 star service, top quality products and always delivered on time
I have and will continue to be a regular customer

Works great together

Great product D3 and k2 works great together

5 stars: 35 (97%)
4 stars: 1 (3%)
3 stars: 0 (0%)
2 stars: 0 (0%)
1 star: 0 (0%)

Vitamin D3 & K2 Blend

Love this vitamin

Vitamin D3 & K2 Blend

Improvement seen

12 weeks post titanium hip replacement

Recovery and protection

VitD3 & K2

Trusting in its effectiveness and encouraged by our son,Paul Hampton ,who has great faith in Matt Lovell.
Jackie & John Hampton

VitD

Staple daily supplement, especially for the UK winter!

Vitamin D3 & K2

5 star service, top quality products and always delivered on time
I have and will continue to be a regular customer

Works great together

Great product D3 and k2 works great together

Super quality product

I have been taking this product for over 18 months now and it is a fabulous supplement. Immunity has never been so important and Vitamin D3+K2 plays a crucial part to helping us to stay strong with lingering Covid-19 remaining.

D3 K2 Blend

Good product. 1 day RDA in just 1 tablet.

Vitamin D3

Very happy to receive a regular delivery of high quality Vitamin D - always arrives in good time :-)

💪🏻👍

Liquid sunshine

The best supplements on the market :)

Great product

Was told by my Dr that my vitamin d level was very low and that I needed to take a good supplement. Aminoman products have always served me well in the past and this is not exception. Great supplement

Part of my essentials!

Wouldn’t be without this product - especially in winter!!

Superior-quality products!

I am a fan of Amino Man products and have been using them since they have been launched - they are consistent with high quality and far better than any other brand I have ever tried. The service and aftercare are top-notch too!

vital to have K2 with your Vitamin D3

Very good blend of Vit K2 and D3

Vitamin D3 & K2 Blend

VITAMIN D3 & K2 BLEND

D3 +K2

Great quick delivery and gift of Gymnema tea👌

Vitamin D3 & K2 Blend

Fantastic product especially good if you're not able to get out in the sun. A very good balance of ingredientss.

Vitamin D

I’ve suffered with depression & low mood since late teens. Going into adulthood it become seasonal. I’ve now been taking Aminomans Vit D for a few years now and it really gives me a lift which helps my mood & energy to work, it’s stoped me going back to the Dr’s to get tablets every year for a boost through winter.

Vitamin d3

I wouldn’t get my vitamin d from anywhere else.

Best Vit D Supplement

Three years ago my Doc told me I need to take Vit D supplements all year round - tried the cheap stuff and yes it's a LOT cheaper in the supermarkets because it's full of rubbish. Then decided to give Aminoman VITAMIN D3 & K2 BLEND instead; Doc checked it out, gave her approval. She does annual blood tests for EVERYTHING and ever since I've used this, Vit D has never fallen below optimum levels. I swear by it - and my Doc is now recommending to her patients as the purest commercially available version of Vit D. More awesome work from Matt!

Solid supplement all year round!

Great product! Obviously good through winter for those of with low light & short days in particular, but I use this all year round and it’s a great boost to the system. Honestly feel it has contributed to keeping flus at bay.

Winter essentials

A carefully designed vitamin D supplement that gets me through the winter.

If you are going to bother ... then get the best

Always like the knowledge and dedication that goes into Aminoman products.
Not the cheapest - but why bother taking a supplement from Poundland if it's not going to serve it's purpose.
Under £20 to get me through the winter each year seems reasonable.

New pack now in even

New pack now in even more convenient and simpler to take tablet as they are smaller and lighter than before.

Stack & Save

Build your foundation with our Amino Man everyday essential supplement stacks. Carefully combined to support overall health, energy, recovery, and performance — all while helping you save more when you bundle.