First, excessive vitamin A can easily cause nausea and vomiting.
Proper intake of vitamin A can help the growth of skin tissues and bones, and can also maintain normal vision, so some vitamin A can be properly supplemented in daily life, but if you eat vitamin A every day or eat vitamin A in excess, it is likely to cause symptoms of nausea and vomiting. Normally, the daily intake of vitamin A should not exceed 30,000 micrograms. If it exceeds, it will not only cause nausea and vomiting, but also muscle disharmony, so everyone must take vitamins in moderation. It is best for women not to exceed 500 mg, and it is best for men to control the intake of vitamin A at around 600 mg.
Second, excessive vitamin C is prone to stones.
As we all know, eating some vitamin C properly can achieve the effect of beauty beauty, and can also speed up skin repair and enhance human resistance. Therefore, in normal times, many women have the habit of eating vitamin C, but it should be noted that vitamin C is a water-soluble substance, which is easily excreted, and it can be metabolized to generate oxalic acid. It will combine oxalic acid with calcium to survive calcium oxalate, so at this time it will increase the chance of people suffering from stones, and vitamin C is an acidic substance. If you eat a lot of vegetarian food, it will stimulate the gastric mucosa and lead to diarrhea. Therefore, when vitamin C is supplemented, it is best to control it within 100 mg.