sources rich in vitamin C are fruits such as lemons, limes, oranges, papaya, and strawberries. It is also found in vegetables, such as brussels sprouts, cabbage, potatoes, and spinach. Some fruits and vegetables not high in vitamin C may be pickled in lemon juice, which is high in vitamin C. Nutritional supplements which provide ascorbic acid well in excess of what is required to prevent scurvy may cause adverse health effects. Some animal products, including liver, muktuk (whale skin), oysters, and parts of the central nervous system, including the adrenal medulla, brain, and spinal cord, contain large amounts of vitamin C, and can even be used to treat scurvy. Fresh meat from animals, notably internal organs, contains enough vitamin C to prevent scurvy, and even partly treat it. Scott's 1902 Antarctic expedition used lightly fried seal meat and liver, whereby complete recovery from incipient scurvy was reported to have taken less than two weeks. Treatment Scurvy will improve with doses of vitamin C as low as 10 mg per day though doses of around 100 mg per day are typically recommended. Most people make a full recovery within 2 weeks. History Symptoms of scurvy have been recorded in Ancient Egypt as early as 1550 BCE. In Ancient Greece, the physician Hippocrates (460-370 BCE) described symptoms of scurvy, specifically a "swelling and obstruction of the spleen." In 406 CE, the Chinese monk Faxian wrote that ginger was carried on Chinese ships to prevent scurvy. The knowledge that consuming foods containing vitamin C is a cure for scurvy has been repeatedly forgotten and rediscovered into the early 20th century. Early modern era In the 13th century, the Crusaders frequently developed scurvy. In the 1497 expedition of Vasco da Gama, the curative effects of citrus fruit were already known and confirmed by Pedro Álvares Cabral and his crew in 1507. The Portuguese planted fruit trees and vegetables in Saint Helena, a stopping point for homebound voyages from Asia, and left their sick, who had scurvy and other ailments, to be taken home by the next ship if they recovered. In 1500, one of the pilots of Cabral's fleet bound for India noted that in Malindi, its king offered the expedition fresh supplies such as lambs, chickens, and ducks, along with lemons and oranges, due to which "some of our ill were cured of scurvy". Unfortunately, these travel accounts did not stop further maritime