what you are buying here is one bottle of SEA KELP 150 mcg / 250 TABLETS lose weight help RICH SOURCE OF IODINE Kelp is a seaweed which is naturally rich in iodine, a trace element used by the body to make thyroid hormones to regulate metabolic rate. Kelp contains high natural amounts of Potassium, Magnesium, Calcium and Iron, as well as many vitamins, but is best known for it's high Iodine content. Iodine is used by the thyroid gland to produce the hormone Thyroxin, which stimulates the metabolism, assisting our bodies to burn off excess fat and sugar. Kelp can therefore be an effective supplement for anyone on a calorie controlled diet, wishing to lose weight. It is also highly regarded as essential in ensuring healthy hair, nails, skin and teeth. CAUTION: If you are already receiving treatment for thyroid problems, you must consult your doctor before using this product.