The highest concentrations of vitamin C are found in fruits and vegetables such as peppers and oranges, according to the National Institutes of Health. More vitamin C is available when these foods are consumed raw than w... More »

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Fruits and vegetables are the richest vitamin C sources, according to the University of Maryland Medical Center. Fruits like mango, papaya, pineapple, citrus, watermelon, cantaloupe, grapefruit, kiwi and guava have high ... More »

Some foods that contain high levels of vitamin C include citrus fruits, cantaloupe, papaya, mango and kiwi fruit. Berries such as strawberries, raspberries and blueberries also contain vitamin C. Vegetables with vitamin ... More »

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The products with the highest amounts of overall vitamins (including vitamin C) are Garden of Life Vitamin Code for Men, Garden of Life Code Perfect Weight and Nature's Way Alive Max Potency Multivitamins, according to L... More »

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According to the National Institutes of Health (NIH), the best food sources for B12 are beef liver and clams, followed by fish, meat, poultry, eggs and milk. Vitamin B12 can only be found naturally in animal foods and pr... More »

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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

According to Mayo Clinic, consuming too much vitamin C is unlikely to be harmful or to cause an overdose. Too much vitamin C may, however, result in undesirable symptoms, such as diarrhea, nausea, vomiting, heartburn, ab... More »