Haha. "Zailin" is the trade name of amoxicillin produced by this pharmaceutical company. Amoxicillin is the common name and real name. Nowadays, medicines are like this. They are commercial patents of the manufacturers... For example, the trade name of aspirin is different in each manufacturer: Bayer Pharmaceuticals is called Bayaspirin, while Lukang Pharmaceuticals is called Aron. Wait...the circle R is the trademark symbol of the product name! This medicine is right, don’t worry!