Brussels sprouts have the highest amount of vitamin C, 94 mg per 100 g, of all brassicas.

It also contains B vitamins (B1, B2, B3, B5, B6), folic acid, vitamins A, E, and H, beta carotene, and is a source of potassium, calcium, magnesium, manganese, zinc, copper, iron, omega-3 fatty acids.