How long does it take to absorb 50,000 IU of vitamin D?
                                
                                
                                •
                                
                                
                        
                                    
                                    5 min read                                
                            
                                Peak blood concentrations of vitamin D following a single oral dose of 50,000 IU can occur within 12 to 24 hours, though the overall process of correcting a deficiency takes much longer. Understanding this timeline is crucial for managing treatment expectations and monitoring progress with your doctor. The journey from ingestion to systemic availability involves multiple steps, influenced by several key factors.