The prior ten to fifteen years has seen an exploding market of over the counter dieting and fat loss products. The appeal to products which are more natural has not been lost on those who provide these types of diet products. That is why you usually see the use of plant based materials on the product labels because the marketing works well. But there is a strong word of warning to people with these supplements. Initially, lots of people see the words, natural or herbal, and so they think the product is safe. That assumption generally leads them to use it with a high degree of trust. However, numerous herbal products do have possible unwanted effects, and there can sometimes be dangerous bad reactions with prescription drugs. Another potential problem exists because some people may be hypersensitive or at risk of side effects while others may not.