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What is ‘Bioavailability’ and why is it important?

by | Jun 19, 2023

Bioavailability refers to the extent a substance becomes available to its intended biological destination.

Many substances and supplements taken orally have different bioavailability due to how the product is made or its dosage form.

Several factors affect our body’s ability to absorb nutrients in the stomach.

These factors include:

  • Age
  • Metabolism
  • Health status
  • Genetics
  • Interactions with other products we consume
  • And the physical and chemical makeup of the nutritional supplement or food.

When vitamins are given intravenously (IV), they then bypass the gut and liver, making the bioavailability almost 100%, compared to the 10-30% when consumed orally.