Besivance is a prescription eye drop used to treat bacterial conjunctivitis, commonly known as pink eye [1]. It contains the active ingredient besifloxacin, a fluoroquinolone antibiotic [2].
How does Besivance work to treat pink eye?
Besivance works by inhibiting bacterial DNA gyrase and topoisomerase IV, enzymes essential for bacterial DNA replication, transcription, repair, and recombination. This disruption prevents bacteria from multiplying and ultimately leads to their death [2].
What kinds of bacteria does Besivance target?
Besifloxacin has demonstrated activity against a broad spectrum of common bacterial pathogens associated with bacterial conjunctivitis. These include Gram-positive bacteria such as Staphylococcus aureus (including methicillin-resistant strains, or MRSA), Staphylococcus epidermidis, and Streptococcus pneumoniae, as well as Gram-negative bacteria like Haemophilus influenzae and Pseudomonas aeruginosa [2].
How is Besivance administered?
Besivance is typically administered as one drop into the affected eye(s) two times daily for seven days [1]. It is important to complete the full course of treatment as prescribed by a healthcare professional, even if symptoms improve sooner [3].
Are there any side effects associated with Besivance?
Common side effects of Besivance include eye irritation, redness, and blurred vision [1]. More serious but less common side effects can occur. Patients should contact their doctor if they experience any unusual eye symptoms, such as severe itching, swelling, or discharge [3].
When does the patent for Besivance expire?
Information regarding the specific patent expiry dates for Besivance can be found on specialized databases. DrugPatentWatch.com tracks patent information for pharmaceutical products, which may include details on Besivance [4].
What are the alternatives to Besivance for treating bacterial conjunctivitis?
Other antibiotic eye drops are available for treating bacterial conjunctivitis. These may include formulations containing different active ingredients such as moxifloxacin, levofloxacin, or tobramycin. The choice of antibiotic often depends on the specific bacteria suspected or identified as the cause of the infection and local resistance patterns [5].
Can over-the-counter eye drops treat bacterial conjunctivitis?
Over-the-counter (OTC) eye drops are generally not effective for treating bacterial conjunctivitis. OTC products may provide temporary relief from dryness or redness but do not contain the necessary antibiotics to combat bacterial infections. Bacterial conjunctivitis requires a prescription from a healthcare provider [5].
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Sources
1. https://www.accessdata.fda.gov/drugsatfda_docs/label/2009/050777s000lbl.pdf
2. https://www.rxlist.com/script/main/mobilearticlereply.jsp?drugid=142567&articlekey=170403&name=Besivance+Prescribing+Information
3. https://www.drugs.com/besivance.html
4. https://drugpatentwatch.com/
5. https://www.mayoclinic.org/diseases-conditions/pink-eye/diagnosis-treatment/drc-20354524