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A generic drug is a copy of the brand-name drug with the same dosage, safety, strength, quality, consumption method, performance, and intended use. Before generics become available on the market, the generic company must prove it has the same active ingredients as the brand-name drug and works in the same way and in the same amount of time in the body.
The only differences between generics and their brand-name counterparts is that generics are less expensive and may look slightly different (eg. different shape or color), as trademarks laws prevent a generic from looking exactly like the brand-name drug.
Generics are less expensive because generic manufacturers don't have to invest large sums of money to develop a drug. When the brand-name patent expires, generic companies can manufacture a copy of the brand-name and sell it at a substantial discount.
Xalkori (crizotinib) is an oral kinase inhibitor that may be used to treat: Adults with non-small cell lung cancer which has spread to other parts of the body and is caused by a defect in either a gene called ALK (anaplastic lymphoma kinase) or a gene called ROS1 Children aged 1 year and older and young adults with anaplastic large cell lymphoma (ALCL) that is ALK-positive. It is used when the ALCL has returned or when a treatment has been tried and it did not work or is no longer working Adults and children aged 1 year of age and older with ALK-positive inflammatory myofibroblastic tumors (IMT). It is used when the IMT cannot be surgically removed or has returned, or when a treatment has been tried and it did not work or is no longer working.
Xalkori can cause serious heart, lung, or liver problems. Call your doctor at once if you have: fast or pounding heartbeats, sudden dizziness, shortness of breath, tiredness, itching, upper stomach pain, dark urine, clay-colored stools, or jaundice (yellowing of the skin or eyes).
Get emergency medical help if you have signs of an allergic reaction to Xalkori: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.