Who Should Avoid Taking Calcium Ascorbate?
                                
                                
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                                    4 min read                                
                            
                                According to the National Institutes of Health, the tolerable upper intake level (UL) for Vitamin C in adults is 2,000 mg per day. While calcium ascorbate is a gentler, buffered form of Vitamin C, certain medical conditions and high dosages mean it is not safe for everyone and requires caution.