The most noteworthy side effect of vitamin C overdose is to promote the formation of renal oxalate stones, because oxalate is a metabolite of vitamin C, which is excreted through the kidney. Studies have shown that people who consume a lot of vitamin C have an increased risk of oxalate urine and kidney calculi.
Long-term high-dose intake may also cause dependence on high-dose vitamin C.
In addition, vitamin C effervescent tablets generally contain food additives such as flavors, spices and pigments. Although limited use according to national regulations has no obvious harm to human body, it is also worth considering whether long-term intake will have adverse effects on health.
Moreover, some vitamin C effervescent tablets add more sugar, which is harmful to the health for a long time; Related studies have also shown that acidic vitamin C effervescent tablets are not good for teeth.
Therefore, it is generally not recommended to take vitamin C effervescent tablets for a long time. If you are not sick, you should eat more things that nature gives you, such as fruits and vegetables.