The right amount of vitamin D varies from person to person. Here is why a multivitamin without vitamin D can make sense and how to take D on its own.
Why Choose a Multivitamin Without Vitamin D?
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The Vitamin Armor Blog
Science-backed guidance on vitamins, minerals, and daily supplementation. Written for athletes, active adults, and anyone who wants to make informed decisions about what they put in their body.
Multivitamin Without Iron: Who Should Choose One and Why
Most men and women after menopause need only 8 mg of iron a day. Here is who is better off with an iron-free multivitamin, who still needs iron, and how to tell.
Do Vitamins Expire? How to Store Supplements So They Stay Potent
Vitamins rarely become harmful after their date, but they do lose strength. Here is what supplement dates mean, why humidity ruins vitamins, and where to store them.
Potassium: The Mineral Most Americans Do Not Get Enough Of
Most adults fall short on potassium. Here is how much you need, the foods that beat bananas, why supplements stop at 99 mg, and who should be careful.
Gummy Vitamins vs. Capsules: Are Gummies as Good?
Gummy vitamins taste better, but many skip key minerals, add sugar, and drift from their labels. Here is how gummies compare to capsules and who they suit best.
Vitamin B6 Toxicity: Why More Is Not Better
Too much vitamin B6 can cause tingling and numbness, and it hides in more supplements than you think. Here is how much you need and how to spot hidden B6.
Vitamin A: Retinol vs. Beta-Carotene and How Much Is Too Much
Vitamin A comes in two forms that behave very differently in your body. Here is how much you need, where the 3,000 mcg upper limit applies, and who should be careful.
Does Vitamin C Help a Cold? What Cochrane Actually Found
Daily vitamin C does not prevent colds for most people but may shorten them a little. Here is what the Cochrane review found, who benefits most, and how much you need.
Folate vs Folic Acid: Do You Need Methylfolate for MTHFR?
Have an MTHFR variant? The CDC says you can still process folic acid. Here is how folate, folic acid, and methylfolate differ and whether testing is worth it.
Vitamin E: Why the Megadose Era Ended
Adults need 15 mg of vitamin E a day. Here is why 400 IU megadoses fell out of favor after large trials, what SELECT found, and how to get enough from food.
How Nutrient Absorption Changes After 50
Aging changes how you absorb a few key nutrients, especially B12 and vitamin D. Here is what shifts after 50, why it happens, and practical steps to stay on track.
Calcium Supplements and Heart Risk: What to Know
Some studies linked calcium pills to heart attacks, while others found no effect. Here is what the evidence says, how much calcium you need, and why food comes first.