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According to Mayo Clinic, too much vitamin C in adults is any amount over 2 grams per day. The recommended dose of vitamin C for an adult is 60 to 95 milligrams a day. More »

www.reference.com Health Medications & Vitamins Vitamins & Supplements

Too much vitamin C can be bad for people, according to WebMD. Overdosing on vitamin C can lead to stomach cramps, nausea and diarrhea. It commonly results from taking too many supplements. More »

www.reference.com Health Medications & Vitamins Vitamins & Supplements

According to the USDA, a medium-sized orange contains approximately 69.7 milligrams of vitamin C, while a small orange contains 51.1 milligrams, and a larger one 97.9 milligrams. The Mayo Clinic states that the recommend... More »

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The recommended dietary reference intake for vitamin C is 65 milligrams each day. Exceeding the daily limit can result in side effects including kidney stones, insomnia, headache, cramps, bloating, heartburn, nausea, dia... More »

www.reference.com Health Medications & Vitamins Vitamins & Supplements

Most adults should consume 4.7 grams of potassium per day, although the specific amount needed varies person by person depending upon levels of sodium and magnesium in the blood, according to the San Francisco Chronicle.... More »

www.reference.com Health Medications & Vitamins Vitamins & Supplements

For adults, the recommended dietary allowance for vitamin A is 900 micrograms per day for males and 700 micrograms per day for females, says MedlinePlus. Doses vary between 300 to 600 micrograms per day for infants and c... More »

www.reference.com Health Medications & Vitamins Vitamins & Supplements

Recommended amounts of vitamin B12 vary depending on age, but adults require 2.4 micrograms per day, according to the National Institutes of Health. Pregnant and breastfeeding women need about 2.6 micrograms per day. Vit... More »

www.reference.com Health Medications & Vitamins Vitamins & Supplements