Vitamins B, C, D, E and K. Fill your Nutritional Gaps

Fill in your Nutritional Gaps for Whole-Body Health

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.

4 Reasons Why Everyone Should Take Our Vitamin Supplements

  • Provide support for healthy bones
  • Promote healthy immune system function
  • Help maintain already-healthy blood pressure
  • Encourage healthy organ function

Our Recommendation

Best Seller

Vitamin D3

Immune, bone & whole body health

125 mcg (5000 IU), 60 softgels


Compare Formulations

We offer the letter vitamins in various forms and dosages, as well as comprehensive vitamin and nutrient formulas. Find the form that fits you.

Vitamin B

Maintaining ample vitamin B levels supports optimal organ function, healthy metabolism, cognitive health and other essential metabolic processes. Our best-seller BioActive Complete B-Complex helps you get the B vitamins your body needs on a daily basis.

See Vitamin B Products

Vitamin C

Vitamin C is known for maintaining a healthy immune system, but it has whole-body health benefits as well. We pair our vitamin C with other nutrients, such as quercetin and a patented form of beta-glucan, for additional support.

See Vitamin C Products

Vitamin D

While our bodies synthesize vitamin D when exposed to sunlight, many of us use sunscreen or avoid direct sun exposure, and for good reason. But this can impact vitamin D production. Our award-winning Vitamin D3 with Sea-Iodine™ helps ensure you get enough vitamin D, and also iodine, which is essential for thyroid health.

See Vitamin D Products

Vitamin E

Vitamin E is a group of eight different antioxidant compounds found in plants. These compounds are some of the most researched and most important nutrients to include in your daily regimen. Vitamin E is divided into two categories, tocopherols and tocotrienols, each with their own set of health benefits.

See Vitamin E Products

Vitamin K

Vitamin K supports arterial and bone health. Our best-in-class Super K Elite is the most comprehensive vitamin K formula we offer. It provides a variety of vitamin K forms at the clinically-studied dosages designed to give you the optimum health benefits.

See Vitamin K Products

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

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

Vitamin D helps preserve youthful cognitive function, supports bone and immune system health, helps maintain already-healthy blood pressure and more. Our Vitamin D has been a 2-time winner of the Survey of Supplement Users, delivering vitamin D3 (as cholecalciferol) in easy-to-swallow forms.

Vitamin E is important for whole-body health. We offer stand-alone tocopherol and tocotrienol formulas, a combination of both, and novel formulations that combine vitamin E with essential nutrients such as selenium.

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

Related Products

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! Vitamins can come from natural sources like exposure to sunlight, or food sources like green vegetables, but it can be difficult for even the most health-conscious person to get the amount they need. So, whether that means maintaining your health or avoiding deficiencies, turning to vitamins in the form of dietary supplements can help fill in some of the gaps. But with so many options, how do you know where to start?

When you're looking for vitamins to take that can 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 your longevity? 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.



Answer a few questions to get custom supplement recommendations.

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.