Cooked spinach, asparagus, and lentils, as well as citrus fruit juices are rich sources of vitamin B9 (folate)(1).
The main form of supplementary vitamin B9 is folic acid, which is available in single ingredient and combination products such as B-complex vitamins and multivitamins. Doses equal to or greater than 1 mg require a prescription (47).
Authored by Dr Peter Engel in 2010, reviewed and revised by Angelika Friedel on 29.06.2017
