Is taking 5000 IU of vitamin D too much for you?
                                
                                
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                                    4 min read                                
                            
                                According to the National Institutes of Health, the safe upper intake level of vitamin D for most adults is 4,000 IU per day. The question, "is taking 5000 IU of vitamin D too much?" is therefore a serious concern for many considering higher doses for supplementation.