Slim 36 Avis have become the rage, touted for their purported ability to curb appetite and stop weight gain. The Malabar tamarind, also known as the gambooge fruit, grows across southwest India, Myanmar and Indonesia. Slim 36 Avis ripens to a red or yellowish fruit about the size of an orange, but resembling the shape of a pumpkin. supplement makers only have to make their products safe to eat and responsibly label them. Also, recent laboratory tests showed that most supplements sold online contain substantially less HCA than the label claims.