I only know that insufficient will cause diseases, but I don't know that excessive will cause more problems. The so-called too much is too late!

Excessive use of vitamin C will bring more side effects to human body. Excessive use can cause nausea, vomiting, diarrhea, abdominal pain, rash and other symptoms. Moreover, it will lead to the increase of oxalic acid, the metabolite of vitamin C, and then cause urinary calculi; Excessive vitamin C can lead to deep vein thrombosis, intravascular hemolysis or coagulation. It can also destroy lymphocytes and hinder the phagocytosis of white blood cells, but it will affect the human immune system.