Research-backed vitamin with potential health benefits.
Because they dissolve in fat, not water. Your body absorbs them with fats from your diet and stores them in fatty tissue and the liver.
Yes. Taking them with a meal that contains some fat or oil significantly improves absorption. Don't take them on an empty stomach.
Yes, absolutely. Unlike water-soluble vitamins, your body stores the excess. Over time, this can become toxic. More is not better.
Click through to the studies bar for the evidence base.
See the dosing guide below.
Compare formats before buying.
Some ingredients build up over weeks. Others act fast.
The compound effect of consistent dosing.
Check the cautions section if you have a pre-existing condition.
Some ingredients you feel. Others just work in the background.
Vitamin D is the big one. Most people who live indoors or away from the equator are deficient. The others (A, E, K) are less common deficiencies.
Usually no. You're better off supplementing only the specific vitamin you need, which for most people is just Vitamin D.
A blood test from your doctor is the only way to know for sure. Don't guess.
For A, E, and K, a balanced diet usually covers it. For Vitamin D, it's very difficult to get enough from food alone; sunlight or supplements are necessary for most.
Pending comprehensive analysis.
Vitamin A from animal sources (retinoids) and plants (carotenoids). · Vitamin D primarily from UVB sunlight exposure on skin, also in fatty fish. · Vitamin E from nuts, seeds, and vegetable oils. · Vitamin K from leafy green vegetables and fermented foods.
Fat Soluble Vitamin Product interacts with other supplements and meds. The analyzer flags interactions, dose mismatches, and timing collisions across your whole list.
FDA Disclaimer: These statements have not been evaluated by the Food and Drug Administration. This information is for educational purposes only and is not intended to diagnose, treat, cure, or prevent any disease. Consult your healthcare provider before starting any supplement regimen.