Review Of Can Large Doses Of Vitamin C Be Harmful 2023. The upper limit for all adults is 2,000 mg a day. Web vitamin c is usually safe to take even at high dosages.

However, taking vitamin supplements in mega doses (2,000 or 3,000 mg per. Web although vitamin c has relatively low toxicity, high doses of it can cause gastrointestinal disturbances,. Web cantaloupe grapefruit kiwi potatoes strawberries tomatoes you probably don’t need a vitamin c supplement if you.