Synephrine is used in some products. It is also called oxedrine, and is an aromatic compound with a hydroxyl group at the para position of its benzene ring. It is derived from the fruit of Citrus aurantium, and can be taken orally or by injection. Its pharmacology is not extensively studied, but some health benefits are associated to it. It is believed to burn fat and help in weight loss. It also increases the metabolic rate and energy level. Further research might indicate more benefits of the product.