What is 6000 IU in Vitamin D: Conversion, Safety, and Deficiency
                                
                                
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                                    4 min read                                
                            
                                According to the National Institutes of Health, the Tolerable Upper Intake Level (UL) for vitamin D in adults is 4,000 IU per day, making a dosage of 6000 IU significantly higher than the recommended daily limit. This high-potency dose is typically reserved for short-term treatment of documented deficiencies, not for routine daily supplementation.