What ingredients are needed to make a human being? Water 35L Carbon 20kg Ammonia 4L Lime 1.5kg Phosphorous 800g Salt 250g Niter 100g Sulfur 80g Fluorine 7.5g Iron 5g Silicon 3g And traces of 15 other elements such as zinc, copper, magnesium etcetera. To buy all of the above ingredients costs less than $5 USD.