Apart from these, one cup of coconut milk also contains about 6.7 mg vitamin C, 0.4 mg vitamin E, 0.2 mcg vitamin K, 1.8 mg niacin, 38.4 mcg folate, 0.1 mg vitamin B6, and 0.1 mg thiamine. The same amount of milk contains about 38.4 mg calcium, 3.8 mg iron, 88.8 mg magnesium, 631 mg potassium, 240 mg phosphorus, 1.6 mg zinc, 2.2 mg manganese, 0.6 mg copper, and 14.9 mcg selenium.