Besigen

Besibac ophthalmic suspension is indicated for the treatment of bacterial conjunctivitis caused by susceptible isolates of the following bacteria:
Corynebacterium pseudodiphtheriticum
Corynebacterium striatum
Haemophilus influenzae
Moraxella lacunata
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Besibac ophthalmic suspension is indicated for the treatment of bacterial conjunctivitis caused by susceptible isolates of the following bacteria:
Corynebacterium pseudodiphtheriticum
Corynebacterium striatum
Haemophilus influenzae
Moraxella lacunata
Staphylococcus aureus
Staphylococcus epidermidis
Staphylococcus hominis
Staphylococcus lugdunensis
Streptococcus mitis group
Streptococcus oralis
Streptococcus pneumoniae
Streptococcus salivarius
Efficacy for this organism was studied in fewer than 10 infections.

Adults and children (1 year of age and older)
: Instill one drop in the affected eye(s) 3 times a day for 7 days.
Pediatric Use
: The safety and effectiveness of Besifloxacin in infants below one year of age have not been established. The efficacy of Besifloxacin in treating bacterial conjunctivitis in pediatric patients one year or older has been demonstrated in controlled clinical trials.
Geriatric Use
: No overall differences in safety and effectiveness have been observed between elderly and younger patients.

The most frequently reported ocular adverse event was conjunctival redness, reported in approximately 2% of patients. Other adverse events reported in patients receiving Besibac occurring in approximately 1-2% of patients included: blurred vision, eye pain, eye irritation, eye pruritus and headache.

Besibac is for topical ophthalmic use only and should not be injected subconjunctivally, nor should it be introduced directly into the anterior chamber of the eye. As with other anti-infectives, prolonged use may result in overgrowth of non-susceptible organisms, including fungi. If superinfection occurs, discontinue use and institute alternative therapy. To prevent contamination do not touch the tip of the dropper to eye, eyelid or any surface of the affected eye. Patients should not wear contact lenses during the course of therapy with Besibac. Shake well before use.

Besifloxacin is an 8-chloro fluoroquinolone with an N-1 cydopropyl group. The compound has activity against Gram-positive and Gram-negative bacteria due to the inhibition of both bacterial DNA gyrase and topoisomerase IV. DNA gyrase is an essential enzyme required for replication, transcription and repair of bacterial DNA. Topoisomerase IV is an essential enzyme required for partitioning of the chromosomal DNA during bacterial cell division.
Plasma concentrations of Besifloxacin were measured in adult patients with suspected bacterial conjunctivitis who received Besifloxacin bilaterally three times a day (16 doses total). Following the first and last dose, the maximum plasma Besifloxacin concentration in each patient was less than 1.3 ng/ml. The mean Besifloxacin C max was 0.37 ng/ml on day 1 and 0.43 ng/ml on day 6. The average elimination half-life of Besifloxacin in plasma following multiple dosing was estimated to be 7 hours.