Why do I feel worse when I take vitamin C?
                                
                                
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                                    3 min read                                
                            
                                According to Harvard Health, taking too much vitamin C, typically over 2,000 mg per day, can cause unpleasant side effects such as nausea, diarrhea, and stomach cramps. If you've ever asked, 'Why do I feel worse when I take vitamin C?', the answer often lies in dosage, timing, and individual sensitivities, not a paradox of the nutrient itself.