SKU: 59311821414

SwissRX Vitamin D3/K2

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Description

SwissRX Vitamin D3/K2Are you one of the vast majority of endurance athletes that doesn't have enough Vitamin D? In speaking with Dr. Kevin Sprouse, our Chief Medical Advisor, he's seen very few athletes that had sufficient levels of Vitamin D. "Having insufficient Vitamin D levels is so common amongst my patient population of elite athletes that I've come to expect it". Vitamin D plays an important role in supporting bone health, maintaining cardiovascular function, and

Are you one of the vast majority of endurance athletes that doesn't have enough Vitamin D?

In speaking with Dr. Kevin Sprouse, our Chief Medical Advisor, he's seen very few athletes that had sufficient levels of Vitamin D. "Having insufficient Vitamin D levels is so common amongst my patient population of elite athletes that I've come to expect it".

Vitamin D plays an important role in supporting bone health, maintaining cardiovascular function, and regulating immune function. When you take Vitamin D it increases your body's absorption of calcium and that's where the SwissRX Vitamin D formulation stands out from the rest.

Swiss RX Vitamin D3 with Vitamin K2

This pharmaceutical-grade, clinically-backed, doctor-recommended combo ensures you're getting the most out of your vitamin D supplementation, eliminating any possibility of over mineralization in the wrong parts of your body.

Here's how it works...

When you have optimal levels of vitamin D in your body, you're able to absorb all the important bone-strengthening, immune-boosting minerals such as calcium and magnesium.

BUT if you're low on Vitamin K, your body may choose to store these minerals in places that you don't want, such as your arteries instead of your bones.

The top researcher in the space, Dr. Leon Schurgers of the Netherlands, showed that taking Vitamin D WITH the right form of Vitamin K, ensures the minerals get pulled into the bone matrix, where you want the calcium to go, instead of getting stored up and calcified in 'danger zones' such as your arteries.

In a nutshell, take vitamin D for absorption and Vitamin K for the regulation of Calcium. Together, they make the perfect pair.

What makes SwissRX Vitamin D the best?

SwissRX takes a pharmaceutical grade Vitamin D3 and combines it with the patent form of Vitamin K2 that Dr. Schurgers used in his research called MenaQ7® PRO. It has been shown that the MenaQ7® PRO stays in your blood for 72 hours versus inferior forms of Vitamin K2 that only last 4 to 8 hours.

Do I need to supplement Vitamin D or just get out in the Sun?

I asked Dr. Sprouse for his answer to this question, this is what he had to say:

"Short answer, I’m not exactly certain. Conceptually, I think of it as athletes having extremely high utilization rates. Vitamin D essentially functions as a hormone in the body and is integral to muscle function, recovery, hormone formation, immune function, and many other processes. Athletes stress these systems to a greater degree and more frequently than sedentary people. There is also the fact that athletes who are outside for long periods of time often wear sunscreen, as they should. So it’s multifactorial. In the end, though, I suspect it comes down to burning through stores faster than they can be replaced".

How we use it

I use 4 drops per day in the AM (that is 4,000 IU). You can take it directly on your tongue or mixed with the beverage of your choice.  You can swallow it, you don't need to hold it in your mouth. 

The reason I like the drops is that it's easy to regulate your dosage.  Each drop is 1,000 IU so if your doctor recommends a lower dosage from 5,000 IU per day, it's easy for you to adjust. More is not better when it comes to Vitamin D.  You don't want to be deficient, but once you get to a sufficient level, most of the data suggest you get all the benefits and mega-dosing doesn't have any additional benefits.

The Swiss RX Story

We set out to find a supplement company we could trust for the world's top endurance athletes. A company that had the same obsession with quality and performance as our athletes do. After all, why spend millions of dollars optimizing the performance of a Tour de France champion only to give him a low-quality supplement with inferior or ineffective ingredients?

Our quest led us to SwissRX. SwissRX takes a "spare-no-expense" approach to procuring the highest quality Pharmaceutical Grade Ingredients. Only 3% of supplement companies go through the rigorous testing required for pharmaceutical grade labeling. But Swiss RX takes it even another step further. Whenever possible, they use the exact ingredients used in medical studies but are often too expensive for supplement companies to use.  What we love about SwissRX is that our athletes can rest assured they are getting the identical ingredients that were proven to be effective in these studies.

Simply stated, SwissRX products work better because they contain better ingredients.

 

The SwissRX Guarantee

We know SwissRX is expensive, but you get what you pay for- especially when it comes to supplements. Other brands may be cheaper, but so are the quality of their ingredients. If you're anything like me, you'd rather pay a premium and KNOW you're getting the highest quality and most effective product possible 

That said, you can try it RISK-Free.  We are 100% confident SwissRX is the best supplement in the world, which is why guarantee it. If for any reason at all you are not THRILLED with your results after using this product for three weeks, contact us within 60 days of your purchase and a no-hassle MONEY BACK refund in the form of Feed Credit. There also is no need to return the product to us, just send us a picture.

 

Disclaimer: These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure, or prevent any diseases. You should consult a licensed health care professional before starting any supplement, dietary, or exercise program, especially if you are pregnant or have any pre-existing injuries or medical conditions. See our FDA Disclaimer.

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SKU: 59311821414

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justinmj411
Charlottesville, US
★★★★★ 5
Great water cup
Size: 40 Ounces, Color: Peony, Size: 40 Ounces, Color: Peony
Love this water cup! I like to use it around the house. I like how much water it holds, because I drink a lot of water. The color selection of these cups is really good too; I went with the peony cup. It is very vibrant and bold in color. I would say as for on the go, they can get pretty heavy if walking with it full of water, so maybe not the best choice if you are travelling by foot and carrying it. One thing I will say is that this keeps the water VERY cold for a long period of time! Definitely good in that aspect. The handle is very pleasant to hold too, as it has a soft silicon-like material along the handle, and feels very sturdy and thick. I do wish that the straw was more clear, but that isnt too hard to replace. If you want a water cup for around the house, I would reccommend
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Reviewed in the United States on April 8, 2026
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Allison Goar
Chelsea, US
★★★★★ 5
great purchase
Size: 30 Ounces, Color: Black Chroma
an amazing and gorgeous Stanley! big and keeps drink cold out hot for longer! high quality and worth the money.
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Reviewed in the United States on May 24, 2026
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Carolyn
Lake Worth, US
★★★★★ 5
Great purchase
Size: 40 Ounces, Color: Rose Quartz 2.0
I was a Stanley skeptic. I couldn’t understand what the big deal was or why the internet was freaking out. I saw the video of the Stanley cup surviving the car fire (and I think the ice was still inside). So I tried it. I drink SO much more water now! I love decorating my Stanley with all the fun accessories and it holds a nice amount of water. It feels durable and good quality. I’ve had my Stanley for a year now and I’m even considering getting another so I can have one while the other is being washed. They are easy to clean as well because of the metal inside. There are two issues I’ve had since I got the Stanley cup. Once it was dropped, and the lid broke. Easy to buy more so not the biggest issue. The cup survived the fall just fine, not a mark on it. The other issue I keep having is my lid gets stuck and becomes hard for me to open sometimes. I have a bad thumb and wrist so often I have to have my spouse open it for me. It keeps my water cold all day. If I put ice in before I go to sleep it’s still cold in the morning. I love these cups and would recommend them to anyone looking to drink more water. If you like your water bottle you will drink more water and want to bring it with you.
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Reviewed in the United States on March 28, 2026
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SaltyMango
Carnegie, US
★★★★★ 4
Very strong and cute tumbler
Size: 40 Ounces, Color: Rose Quartz 2.0, Size: 40 Ounces, Color: Rose Quartz 2.0
Great quencher to get. I got this for my self and I love it so much. It's super cute and the color I got is a light soft pink. The size is big which is great since I like having enough coffee to last me all day. It keeps my drinks cold and warm or what ever temperature it is for a good amount of time which is great for anyone who is out for long periods of time. The quality overall is very good. The handle is big, comfortable and easy to grip and the quencher fits perfectly on my gym bag. Only downside is that it did get a smudge on it after I removed the paper that it had on the bottom. I tried removing the smudge it feels sticky like glue but it didnt get removed so I had to put a sticker over it to cover it up.
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Reviewed in the United States on May 5, 2026
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LisaRose Wright
Belleville, US
★★★★★ 5
This is a great basic protective shower curtain
Color: 1a Peva Clear Premium, Size: 72"W x 72"L (Pack of 1)
This is a great product. It allows me to have a decorative curtain that won’t get water damaged or mildewed. The price point was right on and I will definitely be buying it again. Pros: The thickness is great. Not too flimsy. I was also impressed with the fact that there wasn’t a chemical smell like we often get with plastic curtains. It was very easy to put up and was just the right length to keep the water in the shower while it does a great job protecting the decorative curtain. It also has weights to assist it with hanging correctly. Cons: Make sure to spread it out after your shower to prevent water stains .
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Reviewed in the United States on March 1, 2026

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