What Are the Side Effects of High Vitamin C Intake?
                                
                                
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                                    3 min read                                
                            
                                The Tolerable Upper Intake Level for vitamin C in adults is 2,000 milligrams per day, and exceeding this amount, especially through supplements, can lead to side effects. While generally excreted by the body, an excessive intake of high Vitamin C can cause several adverse reactions, from mild discomfort to more serious health complications.