Schüssler salt Nr.10 Natrium sulfuricum (sodium sulfate). It contains crushed mineral salt particles (grinding) and the essential nutrient Biotin in easily and quickly dissolving tablets ("FastMelt"). The mineral salts contained in New Era tablets follow Dr. Schüssler's original formula. Suitable for vegetarians. Instructions for use: Dissolve 4-8 tablets in the mouth 3 times a day. \ Children up to 12 years: Take half the dose.