Thompson's Fat Blocker should not be taken if you are pregnant, are breast-feeding, if you have an allergy to shellfish, or are taking fat-soluble medication. Keep out of the reach of children. It is advisable that you take Thompson's Fat Blocker at least two hours before or after taking any fat-soluble supplements containing essential fatty acids and fat-soluble vitamins, like Vitamins A, D and E and Evening Primrose Oil, due to its ability to bind fat. Thompson's Fat Blocker is a low allergy formulation. No added sugar, starch, wheat, salt, corn, milk, yeast, glutens, artificial colouring, flavouring or preservatives. The ingredients in each capsule are Chitosan natural marine fibre 455mg and Vitamin C 45mg.With Thompson's high potency Chitosan capsules you take one capsule with water, before meals, up to three times daily, or as prescribed by your doctor or pharmacist. It comes in bottles of 50 and 120 capsules. Each capsule supplies Vitamin C, considered the most important nutrient in increasing the effectiveness of Chitosan. Chitosan is most effective at reducing the absorption of excessive dietary fat when taken before meals with a high fat content.