Ionic not Colloidal. UltraTrace offers a wide range of trace minerals in the highly absorbable ionic form, concentrated from the Great Salk Lake in Utah. Unlike many collidal trace mineral products UltraTrace is exceptionally low in aluminium. The Salt has been removed naturally. Take ConcenTrace with or before meals, added to water, fruit juice or herbal tea, preferably spread thoughout the day. Ingredients:30 drops (1.85ml) of Higher Nature UltraTrace provides: 815mg Ionic trace mineral concentrate, of which:188mg Magnesium, 525mg Chloride, 40mg Sulphate, less than 7.5mg Potassium and sodium. Directions: 25-50 kilos: take 10 drops 50-75 kilos: take 20 drops over 75 kilos: take 30 drops under 25 kilos: take one drop per 2.7 kilos.