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.
Also Known as Zaditen
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Ketotifen is an antihistamine that reduces the effects of natural chemical histamine in the body. Histamine can produce symptoms of sneezing, itching, watery eyes, and runny nose. Zaditor (for use in the eyes) is used to treat itching of the eyes caused by allergy to dust, pollen, animals, or other allergens.
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SIDE EFFECTS that may occur while taking this medication include headaches and stuffy or runny nose.
Zaditor may cause serious side effects. Stop using Zaditor and call your doctor at once if you have: redness, drainage, eyelid swelling, or other signs of infection; eye pain; vision changes; or severe itching of the eyes worse than before using the medication.