Believe it or not, cilantro does contain many nutrients such as potassium, vitamins A, C and K, calcium, magnesium, manganese, folate and beta carotene. It is rich in antioxidants and may also help prevent food poisoning because of the dodecanol in it. (Dodecanol destroys salmonella.) It may aid in better sleep, help with anxiety and lower blood sugar. Cilantro has also been said to help reduce arthritis symptoms because of its anti-inflammatory properties.