The rate and extent to which a vitamin is absorbed and used in the body is known as its bioavailability. This term describes how much of the nutrient is absorbed from the diet and made available for physiological functions within the body.
intrinsic factor
Vitamin C is known to enhance iron absorption from the intestinal tract by promoting the conversion of non-heme iron (plant-based) to a form that is more easily absorbed by the body. Conversely, substances like tannins and phytates found in tea, coffee, and whole grains can inhibit iron absorption.
* Vitamin A * Vitamin B1 (Thiamine) * Vitamin B2 (Riboflavin) * Vitamin B3 (Niacin) * Vitamin B5 (Pantothenic Acid) * Vitamin B6 (Pyridoxine) * Vitamin B7 (Biotin); also known as Vitamin H * Vitamin B9 (Folic acid); also known as Vitamin M * Vitamin B12 (Cyanocobalamin) * Vitamin C * Vitamin D * Vitamin E * Vitamin K
The animal version of vitamin D is known as vitamin D3, or cholecalciferol. It is synthesized by animals in response to sunlight exposure and can also be obtained through diet or supplements.
The coenzyme FAD is formed from vitamin B2, also known as riboflavin.
bioavailability
bioavailability
intrinsic factor
There is no known good natural source of vitamin D other than exposure to sunlight. If needed, there are always Vitamin D supplements, however these aren't as efficiently absorbed compared to the natural source.
Folic Acid is known as vitamin B9
It was probably used as a source of vitamin C during sea voyages. This prevented or minimized the incidence of scurvey. The vitamin C connection was not known, but the effect on scurvey was.
Vitamin C
Carrots are a source of vitamin A.
There are a selection of vitamins that are in the Vitamin K group. These are known as K1-K5. Vitamin K1 is not produced by the body but is absorbed from foods such as green leafy vegetables (spinach, cabbage, broccoli) and some fruits such as avocado and kiwi fruit. Vitamin K2 is produced by bacteria in the large intestine. Vitamins K3-K5 are synthetic and are not generally used for human consumption.
It is also known as B-6 vitamin. It is also known as B-6 vitamin.
Vitamin A is also known as Retinol
Pantothenic Acid is a vitamin. It is commonly known as Vitamin B5.