(Heme iron, found in meat, fish, and poultry, appears to be absorbed intact.) Ascorbic acid, by maintaining iron in the ferrous state, can enhance the absorption of oral iron, however, the magnitude of this increase is in the range of 10% and only occurs with doses of ascorbic acid, vitamin C of 500 mg or greater
Most high results are explained by treatment and are harmless, but a persistently high level with no explanation should be followed rather than filed away
Weighing it up: the case for and against combining them Laid out plainly, so you can judge it rather than be sold on it: What supports combining the two: the mechanisms are independent and complementary, so together they produce a larger GH pulse than either alone
quiz e1380 Mehta SS, Fallon MB (2015) Muscle cramps in cirrhosis: a moving target