All natural Slim Shots™ won't hurt you, whether or not they can help.  The 0.32 ounce shot taken twice a day is supposed to suppress the body's appetite control mechanism to produce a sense of fullness that makes you eat less.  They are made of emulsified palm and oat oils and were introduced in Europe about 10 years ago under the names, Olibra and Fabuless   Four small clinical studies have been published to substantiate the effect.  In older studies, Olibra had been shown to promote satiety from four to 36 hours but a recent study found no evidence of a short- or medium-term effect on food intake or appetite.  The makers claim that Slim Shots reduce average calorie intake by 12.5% – 30%, but they also encourage users to control food portions, exercise and keep a food journal.