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Supports Immunity, Bone Health, and Calcium Absorption

Vitamins D3 and K2 play important roles in supporting immune function, bone strength and calcium metabolism. D3 contributes to normal immune system activity and helps the body absorb calcium. K2 helps guide calcium to bones and away from soft tissues.*

Supports a strong immune system*
Helps regulate calcium absorption*
Supports bone and cardiovascular health*
Contributes to overall cellular function*

When combined, D3 and K2 help maintain proper calcium balance in the body to support strong bones and cardiovascular health.

CoQ10 Product CoQ10 Product
CoQ10 Benefits CoQ10 Benefits
d3k2

Key Benefits

Immune System Support icon

Immune System Support

Vitamin D3 supports healthy immune function and helps regulate the body’s immune response.*

Bone Health icon

Bone Health

Vitamins D3 and K2 work together to support calcium absorption and bone strength while helping to prevent calcium buildup in soft tissues.*

Cardiovascular Support icon

Cardiovascular Support

K2 helps guide calcium into bones and away from arteries, supporting vascular health and normal blood vessel function.*

Cellular Health icon

Cellular Health

D3 and K2 support normal cell function and play a role in immune-related cellular processes that help maintain overall health.*

Liposomal Vitamin D3K2 Study

The Effect of a Liposomal Cholecalciferol Preparation on25(OH) Vitamin D Levels – A comparative, open-label study

Study 1

Study 1

Increase in Vitamin D Levels After 30 Days*

In a comparative open label study, fifteen healthy adults took a liposomal supplement delivering 125 mcg (5,000 IU) of vitamin D3 and 400 mcg of vitamin K2 (MK-7) daily for 30 days. Participants experienced an average increase in serum 25(OH) vitamin D levels of 73% from baseline.*

For comparison

In the same study, participants taking a non-liposomal supplement at the same dosage
saw only a 16% average increase in 25(OH) vitamin D levels.*

*https://cellg8.com/vitamin-d-study/

Study 2

Increase in Vitamin D Levels in Individuals with Insufficient Baseline (<30 ng/mL)*

Participants who began the study with serum 25(OH) vitamin D levels below 30 ng/mL experienced an even greater response, with an average 112% increase in 25(OH) vitamin D levels after 30 days of supplementation.*

*https://cellg8.com/vitamin-d-study/

Recommended By

Top Health Experts & Pro Athletes

Gary Brecka

Gary Brecka

world-renowned human biologist

I’ve made Rho’s NAD+ and Glutathione part of my daily routine. A powerful combo that helps fuel clean cellular energy, detox, and supports longevity.

Dr. Amy Shah MD

Dr. Amy Shah MD

Cornell, Harvard, Columbia Trained Md

I've dedicated my career to improving the health and longevity of my patients. Rho is what I recommend and take personally as a part of my holistic approach to health and longevity.

Noah Ohlsen

Noah Ohlsen

11x Crossfit Games Athlete & 2x Medalist

I was honestly blown away by how fast I felt the difference in my performance and recovery. Rho’s supplements help me push harder in training and bounce back quicker than ever.

Dr. Becky Campbell MD

Dr. Becky Campbell MD

Functional Medicine Physician

I’m usually picky about supplements, but with Rho’s enhanced absorption technology, I know I’m getting unmatched, clinical-grade effectiveness.

Lauren Fisher

Lauren Fisher

9x CrossFit Games Athlete

Over my eight years competing at the CrossFit Games, supplementation has been a crucial part of my daily regimen. The purity and potency of Rho’s products are something I can trust.

Ken Rideout

Ken Rideout

World Champion Marathoner

Rho is a core part of my routine because I feel the difference. Curcumin & NAD+ help me recover faster, stay sharp, and show up with intensity every day.

Dr. Mani Kukreja MD

Dr. Mani Kukreja MD

CEO of Livagewell

I've dedicated my career to improving the health and longevity of my patients. Rho is what I recommend and take personally as a part of my holistic approach to health and longevity.

Kaisa Keranen

Kaisa Keranen

Movement Coach & Founder of Just Move

Rho transformed how I feel, sleep, look and perform. At 40, these supplements have given me more energy, improved my sleep, skin, and taken my performance to the next level!

Recommended By

Top Health Experts & Pro Athletes

Gary Brecka
Dr. Amy Shah MD
Noah Ohlsen
Dr. Becky Campbell MD
Lauren Fisher
Ken Rideout
Dr. Mani Kukreja MD
Kaisa Keranen
Gary Brecka

Gary Brecka

world-renowned human biologist

I’ve made Rho’s NAD+ and Glutathione part of my daily routine. A powerful combo that helps fuel clean cellular energy, detox, and supports longevity.

Dr. Amy Shah MD

Dr. Amy Shah MD

Cornell, Harvard, Columbia Trained Md

I've dedicated my career to improving the health and longevity of my patients. Rho is what I recommend and take personally as a part of my holistic approach to health and longevity.

Noah Ohlsen

Noah Ohlsen

11x Crossfit Games Athlete & 2x Medalist

I was honestly blown away by how fast I felt the difference in my performance and recovery. Rho’s supplements help me push harder in training and bounce back quicker than ever.

Dr. Becky Campbell MD

Dr. Becky Campbell MD

Functional Medicine Physician

I’m usually picky about supplements, but with Rho’s enhanced absorption technology, I know I’m getting unmatched, clinical-grade effectiveness.

Lauren Fisher

Lauren Fisher

9x CrossFit Games Athlete

Over my eight years competing at the CrossFit Games, supplementation has been a crucial part of my daily regimen. The purity and potency of Rho’s products are something I can trust.

Ken Rideout

Ken Rideout

World Champion Marathoner

Rho is a core part of my routine because I feel the difference. Curcumin & NAD+ help me recover faster, stay sharp, and show up with intensity every day.

Dr. Mani Kukreja MD

Dr. Mani Kukreja MD

CEO of Livagewell

I've dedicated my career to improving the health and longevity of my patients. Rho is what I recommend and take personally as a part of my holistic approach to health and longevity.

Kaisa Keranen

Kaisa Keranen

Movement Coach & Founder of Just Move

Rho transformed how I feel, sleep, look and perform. At 40, these supplements have given me more energy, improved my sleep, skin, and taken my performance to the next level!

RHO Liposomal Technology

How It Works

step 1

Encapsulation

Nutrients are enclosed within liposomes—tiny, lipid-based spheres designed to protect active ingredients.

step 2

Delivery

Liposomes transport nutrients through the digestive system, shielding them from breakdown.

step 3

Designed For High Absorption

Traditional supplements break down in digestion. Our phosphatidylcholine-based liposomes act as protective carriers, ensuring nutrients reach your cells intact and potent.

step 1

Encapsulation

Nutrients are enclosed within liposomes—tiny, lipid-based spheres designed to protect active ingredients.

step 2

Delivery

Liposomes transport nutrients through the digestive system, shielding them from breakdown.

step 3

Designed For High Absorption

Traditional supplements break down in digestion. Our phosphatidylcholine-based liposomes act as protective carriers, ensuring nutrients reach your cells intact and potent.

Nutrient

Liposome

Customer Reviews

Based on 144 reviews
85%
(123)
11%
(16)
3%
(5)
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M
Melissa B.
Great way to get your Vitamin D

Mixes with my favorite drink and doesn’t taste bad!

M
Maria Pappas
D3K2

Love the flavor! I know it’s an add on benefit to my Vitamin D3!

R
Rebecca Schaefer
Love this stuff!

I love the bioavailability of these products! Also tastes great!

m
maria carvalho
Easy to take

Tastes good and easy to take. They definitely taste of high quality. I’ll know best once I take longer. I just started taking these and I do feel more optimistic about taking these.

K
Kristy HAMM
Finally feel the benefits of vitamin D

I have taken every brand of vitamin D included prescription. None compare to this liquid product. Very happy!

M
Michelle Cho
Great product

Quality product. My vitamin D levels went up. I have hard time absorbing vitamins so these are good for absorption.

K
Kenzie McClain
Loved it

Great stuff, exactly what I needed.

S
Stacey Smith
D3K2

I enjoyed this and will order again.

H
Hilda Gonzalez-Reed
So easy

I love Rho Products, they taste great and so easy to take. I have been using this product for a month or so and can honestly say I am feeling great. I’m sold on this and will continue to be a loyal customer.

S
Shauna Street
good stuff

I like these vitamins because even though I Can't tell a difference when taking it, I can see it because it shows in my blood work. Doesn't taste bad at all. great vitamin

Questions? We have answers!

You can easily manage your subscription by navigating to the footer of our website and clicking the ‘Manage Subscription’ tab. From here you can login using the email that was used to place your order. You will be sent a one time code to your email to login with. Once in your subscription portal you have full control to cancel, modify, swap products, change shipping dates and even gift an order.

For optimal results the recommended daily dose is 15ml, equivalent to one tablespoon. You have the flexibility to take it with or without food, directly from the teaspoon, or mixed into any beverage of your choice. You can combine Rho creatine with other Rho products in the same drink for added convenience. It can also be added into any workout shakes or drinks.

Domestic orders typically arrive within 3-6 business days and you will receive an email with the tracking information as soon as your order leaves our warehouse in New Jersey. If you have any questions or concerns, please feel free to reach out to our team at support@rhonutrition.com and they will be happy to help.

Nope! While we suggest refrigerating all Rho products for the best taste experience, refrigeration isn't mandatory. You can even take them on the go without refrigeration, making them perfect for travel.

Liposomal delivery is a technique used to enhance the absorption and bioavailability of certain nutrients or compounds. It involves encapsulating the active ingredient within tiny lipid (fat) molecules called liposomes. These liposomes act as protective shells, allowing the encapsulated substance to bypass degradation in the digestive system and facilitating its absorption into the bloodstream. This method improves the delivery of nutrients to target cells and tissues, maximizing their therapeutic effects.

Sunflower lecithin is often confused with sunflower oil, but the two are very different. While sunflower oil is simply the pressed oil from sunflower seeds, sunflower lecithin is a special substance extracted from these seeds that contains important nutrients called phospholipids. One key phospholipid it provides is phosphatidylcholine, which is essential for building true liposomes—tiny, protective “bubbles” that can carry nutrients into your cells more effectively. In other words, sunflower lecithin is not the same as the sunflower oil you’d use in cooking. Instead, it’s a natural, safe ingredient that helps create stable, high-quality liposome supplements to improve the delivery and absorption of vitamins and other nutrients.

We recommend consuming a new product consistently for a couple of months for optimal results. However, if you’re not satisfied for any reason we have a 60-day money back guarantee. Simply email support@rhonutrition.com to let us know and we will happily assist you. You can read the full Refund Policy here. 

Although the term "Natural Flavors" is often used ambiguously or even misleadingly by other brands to hide nasty ingredients, rest assured that our natural flavors are nothing but highly purified plants, herbs, and citrus extracts. They're formulated by our expert flavorists exclusively to enhance taste, without any of the concerning additives you might find elsewhere.

Yes, at Rho Nutrition every single product undergoes a rigorous quality control process ensuring we are setting the industry standard for quality and safety. Every step of the manufacturing process is carefully documented, tested and done in a cGMP, FDA registered and allergen free facility. Every product undergoes third party testing for purity, safety, and potency.