Fill Your Nutritional Gaps: Vitamins B, C, D, E & K

Even if you try to eat a balanced diet, it’s difficult to get the optimal doses of all the vitamins your body needs. Life Extension® offers a wide range of supplements that help you with all the healthy essentials, including specialized products that deliver vitamins B, C, D, E and K.

Best Seller

Vitamin D3

Immune, bone & whole body health

$7.50

Vitamin B

Healthy vitamin B levels support optimal organ function, healthy metabolism, cognitive health and other essential metabolic processes.

Vitamin C

Support a healthy immune system and get other whole-body health benefits with vitamin C and formulas with vitamin C plus complementary nutrients.

Vitamin D

Vitamin D helps preserve healthy cognitive function, supports bone and immune system health, helps maintain already-healthy blood pressure and more.

Vitamin E

Vitamin E is important for whole-body health. We offer stand-alone tocopherol and tocotrienol formulas, a combination of both, and a novel formulation that combines vitamin E with sesame lignans.

Vitamin K

Support your arterial and bone health with Vitamin K. Our formulas include several forms of K at clinically studied dosages designed to give you the optimum health benefits.

Related Products

4 Reasons Why Everyone Should Take Our Vitamin Supplements

  1. Provide support for healthy bones
  2. Promote healthy immune system function
  3. Help maintain already-healthy blood pressure
  4. Encourage healthy organ function

Editor's Picks

More About Letter Vitamins

What are the best vitamins to take?

Vitamins are a fundamental part of healthy living. They're the building blocks for optimal health, so getting enough essential vitamins is, well, essential!

When you're looking for vitamins to take to best support your wellness goals, start with the alphabet—the vitamin alphabet, that is! Beginning with vitamin A and ending with vitamin K, there are 6 different letter vitamins, (including the well-known B, C and D vitamins) that benefit different parts of your health.

How to choose the best vitamins for you

Though everyone can benefit from incorporating letter vitamins into their supplement regimen, choosing the best vitamins for you depends on your health goals.

Do you want to support a healthy heart and bones? Vitamin D and vitamin K are bone strength and cardio superstars. Want to keep your immune system in tip-top shape? The powerhouse properties of vitamin C have your back. Trying to support healthy aging? Vitamin E's antioxidant properties can complement your anti-aging efforts.

And of course, the B vitamins do a little bit of everything! The 8 different types of vitamin B (including vitamin B6 and vitamin B12) help support a healthy metabolism, brain health, and other metabolic processes essential to whole-body health.

While these nutrients can be found as standalone formulas, most of them are also combined in multivitamins.

Can you take vitamin D and E together?

Almost all of the letter vitamins can (and should!) be taken together. They all have different benefits that complement each other. For example, taking E & K vitamins together makes sense, as vitamin E is essential for helping your body use vitamin K.

One consideration when taking any vitamin is whether it should be taken with food or not. The letter vitamins come in two categories: fat-soluble (vitamins A, D, E and K) and water-soluble (vitamins B and C). Fat-soluble vitamins do not dissolve in water and are better absorbed into your bloodstream when eaten with food. Since vitamin D and vitamin E are both fat-soluble vitamins, taking them together with a meal is a great way of ensuring you're optimizing your intake of each of these nutrients and getting the most out of their combined benefits.

On the other hand, water-soluble vitamins dissolve in water, which means they are absorbed into your tissues and are available for immediate use.

Need help selecting what's best for you?

Life Extension - Why We Do It?

The Best Supplements Science Can Offer

When putting something in your body, you should be confident that you’re getting the nutritional benefits your body deserves. We've been delivering the highest-quality products—backed by science and formulated with the finest ingredients—for over 40 years.

What Matters to You, Matters to Us

We're committed to empowering you to live a healthier life. Whether it’s finding sustainable partners for our ingredients or funding the latest anti-aging research, we're all about your health & wellness.

Highly Recommended

98% of our customers recommend us to family and friends. We're very proud of that because our loved ones matter to us—and we're willing to bet you feel the same way.

Product Transparency

40 years of research dedicated to bringing you premium, scientifically-validated formulations.