Bioavailability Of Biotin Given Orally To Hum 1999 The American Journal Of C

Researchers investigated how well the body absorbs biotin (vitamin B7) when taken in high doses by mouth. Biotin is essential for several enzymes that help process fats, proteins, and carbohydrates. Some people are born with genetic conditions that require them to take very high doses of biotin supplements - much higher than typical daily vitamins - to maintain proper metabolism.

The study tested six healthy adults who received different amounts of biotin either by mouth or through IV. The researchers then measured how much biotin and its breakdown products appeared in urine over 24 hours to determine absorption rates. They found that when people took high oral doses, their bodies absorbed nearly 100% of the biotin - just as effectively as when it was given directly into the bloodstream through IV.

This finding is significant for metabolic health because it confirms that oral biotin supplements work efficiently, even at therapeutic doses. The study also revealed that the body breaks down biotin into several different compounds, with more than half remaining as active biotin. When higher doses were given, the kidneys filtered out more biotin through urine, suggesting the body has natural mechanisms to prevent biotin buildup.

For clinical practice, this research supports the use of oral biotin supplementation for treating metabolic disorders and suggests that patients don't need IV administration to achieve full absorption. This knowledge helps doctors optimize dosing strategies for both genetic conditions requiring high-dose biotin and general metabolic support protocols.