What is the maximum limit of vitamin D3?
                                
                                
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                                    3 min read                                
                            
                                According to the National Institutes of Health (NIH), a daily intake exceeding 4,000 IU (100 mcg) of Vitamin D is generally not recommended for adults without medical supervision. Understanding the maximum limit of vitamin D3 is crucial, as excessive supplementation can lead to serious health complications, primarily due to an unhealthy buildup of calcium in the blood.