Essential D3/K2

synergistic immune support

Serving: 60-Day Supply (60 Capsules)

Vitamin D is essential to virtually every aspect of our health, and affects our immune system, emotional wellbeing, energy levels, fitness and more. Our high-potency Vitamin D3 supplement is in the best, most bioavailable form, and contains Vitamin K2, a cofactor that ensures optimal function.  

Benefits

Immune Health
Energy + Metabolism
Muscle Health
Emotional Wellbeing
4000 IU per Capsule
Just £0.43/Day
type
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1
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Free shipping on all UK orders over £50 Free shipping on all UK orders over £50
90 day money back guarantee 90 day money back guarantee

Good health comes over time, not overnight. For the best results, most supplements require at least 3 months of consistent, dedicated use. To help you maximise results, we've introduced a 90-Day Feel-Good Guarantee. If you're not seeing an improvement after that period, you'll get your money back. Terms and Conditions apply.

Third party tested Third party tested
Practitioner designed and trusted Practitioner designed and trusted

Best vitamin D I have taken

Sally

ESSENTIAL D3/K2

The quality of this product is very high and the combination of vitamin D with K2 makes for better absorption. The packaging is eco friendly and understated. It is now my go-to vit D!

Katie J

ESSENTIAL D3/K2

Love my vitamin D3/K2 supplement. It’s great quality and I feel more energetic taking it.

Sabrina

ESSENTIAL D3/K2

The Essential Breakdown

Description

Essential D3/K2 is a high-potency daily vitamin designed to support key areas of health including immune function, bone health, muscle function, and overall wellbeing.


Vitamin D3 is a critical nutrient involved in many physiological processes, including the normal function of the immune system, support of muscle performance, and maintenance of healthy bones and teeth. However, due to limited sun exposure - particularly in the UK - many people may struggle to maintain optimal levels year-round.


This formula provides Vitamin D3 in its most bioavailable form (cholecalciferol), helping to support effective absorption and utilisation within the body. It is paired with Vitamin K2 (MK-7), an important cofactor that works synergistically with Vitamin D3.
Vitamin K2 helps support the body’s natural calcium regulation by directing calcium to where it is needed most, such as bones and teeth, while helping to prevent unwanted calcium deposition in soft tissues. This complementary action supports both skeletal strength and cardiovascular health.


Together, Vitamin D3 and K2 provide a well-rounded approach to foundational health, supporting immune resilience, bone maintenance, muscle function, and long-term wellbeing as part of a balanced daily routine.

Key Benefits

1. Supports immune system function
Vitamin D3 contributes to the normal function of the immune system as part of everyday health and wellbeing.


2. Supports muscle function and physical wellbeing
Vitamin D plays an important role in supporting normal muscle function, mobility, and overall physical performance.


3. Supports mood and general wellbeing
Vitamin D is involved in a wide range of physiological processes that contribute to overall wellbeing, including mood regulation.


4. High-potency, bioavailable form of Vitamin D3
Provides 4000 IU of Vitamin D3 (cholecalciferol), the most bioavailable form for effective daily support.


5. Synergistic support with Vitamin K2 (MK-7)
Vitamin K2 acts as a key cofactor, working alongside Vitamin D3 in calcium metabolism and utilisation.


6. Supports healthy calcium distribution
Vitamin K2 helps direct calcium to bones and teeth while supporting normal calcium balance in soft tissues.


7. Comprehensive bone and systemic support
Together, Vitamin D3 and K2 support skeletal health and broader physiological function as part of a balanced daily routine.

How To Use

Take 1 capsule daily.

This product is not intended to diagnose, treat, cure or prevent disease. Food supplements should not replace a balanced diet. Formulated for Adults 18+.

Precautions: If taking medications, pregnant, breastfeeding or health condition present, consult your healthcare practitioner before using this product.

Ingredients
Serving Size: 1 Capsule
Servings Per Pack: 60
One Serving Provides NRV%
Vitamin D3 4000IU 2200%
Vitamin K2-MK7 82.5mcg 110

Vitamin K contributes to normal blood clotting and maintenance of normal bones
Vitamin D contributes to the maintenance of normal bones, muscle function and immune function

Shipping

Standard delivery

Your order will take 1-2 business days for our warehouse to process, and it will ship and arrive within 2 business days after that.

1-2 Days

Express delivery

Your order will take 1 business day for our warehouse to process before, and it will ship and arrive within 1 business day after that.

1 Day

International delivery

Your order will take 2 business days for our warehouse to process, and it will ship and arrive within 7-14 business days after that. Your order may be subject to customs tax/duty. We currently ship to Canada, Hong Kong, Singapore, UAE, Switzerland, Ireland, Netherlands, France, New Zealand, and Australia.

7-14 Days
Winner of "Best Herbal Supplement Brand"
"Hands-down my favourite supplements"
"ARTAH have firmly cemented themselves as one of the most trustworthy health brands on the market."
Logo of 'GET THE GLOSS' in black text on a white background
"A brand that's always at the cutting edge of optimum nutrition."
"All the cool girls are using ARTAH these days."
Winner of "Best Herbal Supplement Brand"
"Hands-down my favourite supplements"
"ARTAH have firmly cemented themselves as one of the most trustworthy health brands on the market."
Logo of 'GET THE GLOSS' in black text on a white background
"A brand that's always at the cutting edge of optimum nutrition."
"All the cool girls are using ARTAH these days."
Winner of "Best Herbal Supplement Brand"
"Hands-down my favourite supplements"
"ARTAH have firmly cemented themselves as one of the most trustworthy health brands on the market."
Logo of 'GET THE GLOSS' in black text on a white background
"A brand that's always at the cutting edge of optimum nutrition."
"All the cool girls are using ARTAH these days."
Winner of "Best Herbal Supplement Brand"
"Hands-down my favourite supplements"
"ARTAH have firmly cemented themselves as one of the most trustworthy health brands on the market."
Logo of 'GET THE GLOSS' in black text on a white background
"A brand that's always at the cutting edge of optimum nutrition."
"All the cool girls are using ARTAH these days."
Winner of "Best Herbal Supplement Brand"
"Hands-down my favourite supplements"
"ARTAH have firmly cemented themselves as one of the most trustworthy health brands on the market."
Logo of 'GET THE GLOSS' in black text on a white background
"A brand that's always at the cutting edge of optimum nutrition."
"All the cool girls are using ARTAH these days."

Trusted by experts

"I use Cellular Hydration during my workouts and it has been fantastic. It's undoubtably helped my training and performance and has an incredibly refreshing taste."

Dr. Hugh Coyne

Private GP

"I use Enhanced NAD+ Complex because it targets multiple aspects of NAD+ biology, supporting production via nicotinamide riboside while also helping reduce NAD+ depletion. This synergistic formulation supports both energy metabolism and longevity pathways in a way that feels both intelligent and aligned with systems biology."

Dr Tamsin Lewis

Founder of Wellgevity Clinic

"We've been consistently impressed by the quality of ARTAH supplements - you can really feel the difference. The formulations are clean, potent, and clearly backed by science, which gives us confidence in what we are recommending to our clients and using ourselves."

Roberta Baldo

Nutritional Therapist + Founder of Baldo + Mason

"ARTAH sets a new standard for supplements - delivering science-backed formulations, effective dosages, and the best quality ingredients."

Dr Aanya Hirdaramani

Founder of The Nourish Method

"As a nutritionist and someone currently pregnant, I’ve felt great taking ARTAH’s Enhanced Fertility. It’s one of the few formulas I fully trust for both clinical recommendations and my own journey. It is thoughtfully dosed, easy to tolerate, and includes key nutrients that so many standard pre-natals miss! "

Clarissa Lenherr

Nutritional Therapist

"Finding the right electrolytes has been a game changer for me, and these are the best!"

Ollie Black

Hyrox Athlete + PT

"I really like how Metabolic Fix is compounded, great from a cravings and blood sugar regulation POV."

Pete Williams

Functional Medicine Practitioner

"As a health and wellness professional, I'm always looking for ways to optimise my clients' well-being. I wholeheartedly recommend Cellular Hydration to anyone looking to combat fatigue and enhance overall vitality."

Jen Mackinder

Nutritional Therapist

"The purity of Essential Creatine is unmatched; it's the best quality out there, and it's been a game changer in my routine"

Caroline Idiens

PT + Founder, Caroline's Circuits

"I have been using Artah supplements for over 4 years. Metabolic Fix is such a powerhouse for supporting your blood sugar levels and helps balance my energy throughout the day. Berberine, which is the key ingredient, is one of my favourite plant compounds to protect your gut barrier. Absolutely love the passion and the care that goes into everything that Rhian and the team do."

Ksenija Selvanova

Author + Lymphatic Massage Specialist

"Quality, dosage, and effectiveness are the most important things to me when I recommend supplements to my clients - and ARTAH delivers on all fronts. I love this brand."

Lucy Miller

Nutritional Therapist & Contributing Wellness Editor for Sheerluxe

FAQs

Who should take Essential D3/K2?

Anyone who wants to support systemic health. Public guidelines suggest that adults in the UK supplement with Vitamin D3 throughout autumn and winter months.

When will notice a difference on D3/K2?

Every body is different and it depends on your starting point. If you are using blood tests, we recommend waiting for eight weeks before testing again. Individuals with lower levels of Vitamin D may start to feel the benefits more quickly than others. Since many of the effects of Vitamin D are not immediately tangible (for example, bone health and cell division), you may not notice anything whilst you are taking it, however, maintaining optimal Vitamin D levels is essential for long term health.

What are some signs I might be lacking Vitamin D?

Common signs of insufficient levels of Vitamin D3 include muscle pain and weakness, fatigue, bone pain, low mood, hair loss, difficulty sleeping, poor immunity and more.

Why is Vitamin K2 important?

Vitamin K2 works in synergy with Vitamin D to transport calcium into our bones. Without sufficient K2, calcium can be deposited into our arterial walls, which is why pairing it with K2 is the safest, most efficient way to supplement.

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