Gatifloxacin
TEQUIN
What it isDNA-gyrase-inhibiting fluoroquinolone eye drop; bacterial conjunctivitis.
Why this oneIts current role is topical ocular therapy because the systemic product's dysglycemia risk outweighed its advantages.
What limits itLocal irritation and hypersensitivity can occur; the withdrawn systemic formulation caused severe hypo- and hyperglycemia.
FDA label
Read the full label on DailyMed ↗
| FDA dosing | Population | Start | Target | Max |
|---|---|---|---|---|
| Bacterial conjunctivitis | Adults and peds >=1 year | Day 1: 1 drop ophthalmic in affected eye(s) Q2H while awake, up to 8 doses | Days 2-7: 1 drop 2-4x/day while awake | 8 drops/day (Day 1) |
Renal Undefined
Hepatic Undefined
Instructions
- Topical ophthalmic use only — do not inject or introduce directly into anterior chamber of the eye
Contraindications
- History of hypersensitivity to gatifloxacin or other quinolones
Cautions
- Hypersensitivity incl. anaphylaxis, angioedema, dyspnea, urticaria — possible even after a single dose; rare SJS; discontinue if allergic reaction
- Prolonged use may cause overgrowth of nonsusceptible organisms incl. fungi — discontinue and treat if superinfection
- Corneal endothelial cell injury if introduced into anterior chamber
Adverse reactions
- Worsening conjunctivitis, eye irritation, dysgeusia, eye pain (>=1%)
- Chemosis, conjunctival hemorrhage, dry eye, eye discharge, eyelid edema, headache, keratitis, red eye, reduced visual acuity (other studies)
- Postmarketing: anaphylaxis, angioedema, blurred vision, eye swelling, allergic dermatitis
Pregnancy No human data; no adverse developmental outcomes in animals at clinically relevant doses (teratogenic only at >=600x human ophthalmic dose)
Lactation Unknown if present in human milk; systemic levels after ocular dosing are low; weigh benefits vs risk
NO BOXED WARNINGS
Principal riskNo FDA boxed warning; systemic gatifloxacin (Tequin) was withdrawn from the U.S. market in 2006 for serious dysglycemia.
Cost, est. cash$10–$400/month
Generic entry2011
Classes and tags
Clinical profile
Legacy pregnancy categoryC
Defining liabilityLocal irritation or hypersensitivity; systemic toxicity is minimal with correct local use.
Mechanism of action: Gatifloxacin ballicule
