Cowslip can be used in both its fresh as well as dry form. The flowers and leaves are rich in beta carotene and vitamin C, both of which are strong antioxidants that help the body in many ways by strengthening the immune system. They can also help in lowering cholesterol levels, thereby increasing heart health. Cowslip flowers and leaves are also rich in potassium, calcium, sodium and salicylates. The saponoids in the herb have expectorant properties and are useful in treating coughs.