Even though the patents for Iquix (levofloxacin ophthalmic solution) have expired, a generic version is not yet available. There do not appear to be any other patents or other legal reasons preventing this, so a generic version could be expected soon. Quixin has the same active ingredient as Iquix, but in a different strength; therefore, these drugs are not interchangeable.
Can I Buy Generic Iquix?
Iquix® (levofloxacin ophthalmic solution) is a prescription eye drop medication used to treat corneal ulcers. It belongs to a class of antibiotics called fluoroquinolones, or just "quinolones" for short.
Iquix is made by Santen Oy for VISTAKON® Pharmaceuticals, LLC. The patents for this medication have expired. However, it is not yet available in generic form.
When Will Generic Iquix Become Available?
Generic Iquix likely will be available in the near future. The same drug in a lower strength (sold under the name Quixin®) made by the same manufacturer "went generic" in December 2010, after the patent for the drug expired. Since Iquix and Quixin are covered by the same patent, it does not appear that there is any legal reason preventing generic Iquix from being made.
What About Generic Quixin?
Iquix and Quixin contain the same active ingredient, although in different strengths (1.5% for Iquix and 0.5% for Quixin). Also, they are approved for different uses. For these reasons, they cannot be considered interchangeable drugs. Generic Quixin cannot be substituted for Iquix. If you cannot afford Iquix, please talk with your healthcare provider or pharmacist about more affordable alternatives.
Written by/reviewed by: Kristi Monson, PharmD;Arthur Schoenstadt, MD
Food and Drug Administration, Center for Drug Evaluation and Research. Electronic orange book: approved drug products with therapeutic equivalence evaluations. FDA Web site. Available at: http://www.fda.gov/cder/ob/. Accessed January 5, 2011.
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