What is Trufil?It means Seagreens® capsules contain at least what is stated. Standard industry practice allows \'average\' content in capsules for speed of filling. What\'s in itDried granulated Seagreens® native wild Wrack seaweed Ascophyllum nodosum, whose composition and health benefits Seagreens has studied and documented for over two decades. Nothing added or extracted. Non-allergenic. Safe for permanent daily use. What it doesThis classic food ingredient adds a complete mineral complex and umami flavours to everyday foods. Ascophyllum is a natural prebiotic, supports gastrointestinal health and bowel function, reduces the glycemic index in carbohydrate foods and with other dietetic measures, contributes to weight management. As a good source of iodine it contributes to normal thyroid, nervous system and cognitive function and the maintenance of normal skin. It adds a comprehensive balance of micronutrients to a normal daily diet. All Seagreens® nutrition products contain significant levels of natural iodine. The uptake of iodine in the body* has been shown to be approximately 1/3rd of intake, illustrated in the following table. Directions for use2 capsules (1 gram) each morning, preferably with first food or drink, contributes a balance of micronutrients to a normal daily diet. In older age and to address health conditions and nutrition deficiencies, professional advice may be helpful before using higher daily amounts. For children use half the amount. Safe in permanent daily use for any age and health condition. Figures are average iodine levels in micrograms over two decades harvesting Seagreens®.Iodine levels fluctuate according to natural variances in species and individual uptake.Product name                                               Intake (daily use or portion)            *UptakeFood Capsules x 2 (1gram / 0.04oz)                                            390µg             129µgFood Granules x 1/2 teaspoon (1g / 0.04oz)                             390µg             129µgIodine+ Capsules x 1 (1/2g / 0.02oz)                                           385µg             127µgIodine Lite+ Capsules x 1 (400g / 0.014oz)                                150µg             50µgCulinary Ingredient (per 2g / 0.07oz)                                          1740µg            574µgThe Mineral Salt (per 2g / 0.007oz)                                             870µg             287µgNutritious Food Seaweed Pelvetia (per 2g / 0.07oz)                700µg             231µgPet & Equine Granules (per 1g / 0.04oz)                                   870µg             287µg* Combet E., et al. Low-level seaweed supplementation improves iodine status in iodine-insufficient women. British Journal of Nutrition, 9:1-9, 2014 (a Seaweed Health Foundation study at Glasgow University). The British Health Food Manufacturers’ Association advises that iodine supplementation should not exceed 500µg per day. In the EU the European Food Safety Authority allows an \'upper tolerable daily intake\' of 600µg. In the USA this figure is 1100µg per day. For more information click on the Profile of nutrients box below. A free booklet ‘Iodine sufficiency from nutritious food seaweed’ is available for professional study from info@seagreens.co.uk.