Which characteristic best describes water-soluble vitamins?
                                
                                
                                •
                                
                                
                        
                                    
                                    3 min read                                
                            
                                Approximately 81% of biotin, a water-soluble vitamin, exists in free form in the body before being excreted. This limited storage and easy elimination is the key attribute, and understanding which characteristic best describes water-soluble vitamins is crucial for maintaining adequate nutrient levels through consistent dietary intake.