I've written many blogs on the subject of "know your supplement manufacturer." The recent hoodia claims are the very reason I talk about this so often.
The appetite suppressant Hoodia has gotten some attention lately because GeoPharma and Breakthrough Engineered Nutrition, falsely advertised Hoodia in their products when actually the products contained no Hoodia. Weight loss products have notoriously attracted some of the less scrupulous companies.
However, it is reassuring that companies falsifying claims are eventually caught and put out of business. But many continue in business for years before legal authorities catch them. Do your research, know your supplements and the supplement manufacturers. Ask trusted health professionals to help you find the best natural supplements for you. Your health is the most important commodity you have.