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.
Octreotide is used to treat severe diarrhea and other symptoms that occur with certain cancers of the intestine.
Octreotide also reduces the amount of growth hormone in the body, and so it is also used to treat acromegaly, a condition associated with overgrowth of the hands, feet, and parts of the face.
Octreotide is also used for emergency treatment of particular causes of bleeding in the esophagus and stomach.