KETOROLAC TROMETHAMINE

Keto ro lac t ro met ham ine op htha lm ic so lut i on 0.5% is a m ember of the pyrrolo-­pyrrole group of nonsteroidal anti-inflammatory drugs (NSAIDs) for ophthal mic use. Its che mical na me is (±)-5-Benzoyl-2, 3-dihydro-1H pyrrolizi ne-1-carboxylic acid co m pound with 2-a mino-2-(hydroxy methyl)-1,3-propanediol ( 1:1) and it has the following structure: Keto ro lac t ro met ham ine op htha lm ic so lut i on is supplied as a sterile isotonic aqueous 0.5% solution, with a pH of 7.4. Keto ro lac t ro met ham ine op htha lm ic so lut i on is a race mic m ixture of R-(+) and S-(-)- ketor olac tro metha mine. Ketorol ac tro methamine may exist in t hree cr ystal for ms. All for ms are equally soluble in water. The pKa of ketorolac is 3.5. This white to o ff-white c rystalline su bstance discolors on prolonged exposure to light. The m o lecular weight of ketorolac tro metha mine is 376.41. The os molality of keto ro lac t ro met ham ine op htha lm ic so lut i on is 290 m O s mol/kg. Each mL of ketorolac tromethamine ophthalmic solution contains: Active: ketorolac tromethamine USP 0.5%. Preservative: benzalkonium chloride solution (50%) NF 0.02%. Inactives: edetate disodium USP 0.1%; octoxynol 40; water for injection USP; sodium chloride USP; hydrochloric acid NF and/or sodium hydroxide NF to adjust the pH. ketorolac-structure

Ketorolac tromethamine ophthalmic solution is indicated for the temporary relief of ocular itching due to seasonal allergic conjunctivitis. Ketorolac tromethamine ophthalmic solution is also indicated for the treatment of postoperative inflammation in patients who have undergone cataract extraction. Ketorolac tromethamine ophthalmic solution is a nonsteroidal, anti-inflammatory indicated for: The treatment of inflammation following cataract surgery. ( 1 ) The temporary relief of ocular itching due to seasonal allergic conjunctivitis. ( 1 )

One drop of ketorolac tromethamine ophthalmic solution should be applied to the affected eye(s) four times a day for relief of ocular itching due to seasonal allergic conjunctivitis. For the treatment of postoperative inflammation in patients who have undergone cataract extraction, one drop of ketorolac tromethamine ophthalmic solution should be applied to the affected eye four times daily beginning 24 hours after cataract surgery and continuing through the first 2 weeks of the postoperative period. ( 2.1 ) 2.1 Recommended Dosing Patient Dosing The recommended dose of ketorolac tromethamine ophthalmic solution is one drop four times a day to the affected eye(s) for relief of ocular itching due to seasonal allergic conjunctivitis. For the treatment of postoperative inflammation in patients who have undergone cataract extraction, one drop of ketorolac tromethamine ophthalmic solution should be applied to the affected eye four times daily beginning 24 hours after cataract surgery and continuing through the first 2 weeks of the postoperative period. 2.2 Use with Other Topical Ophthalmic Medications Ketorolac tromethamine ophthalmic solution has been safely administered in conjunction with other ophthalmic medications such as antibiotics, alpha-agonists, beta blockers, carbonic anhydrase inhibitors, cycloplegics, and mydriatics. Drops should be administered at least 5 minutes apart.

Ketorolac tromethamine ophthalmic solution is contraindicated in patients with previously demonstrated hypersensitivity to any of the ingredients in the formulation. Hypersensitivity to any component of this product. ( 4 )

The most frequent adverse reactions reported by up to 40% of patients participating in clinical trials have been transient stinging and burning on instillation. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Sun Pharmaceutical Industries, Inc. at 1-800-818-4555 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch . 6.1 Clinical Studies Experience Because cli nical studies are conducted under wi dely var ying conditions, adverse reaction rates observed in the clinical studies of a drug cannot be directly compared to t he rates in the clinical studies of another drug and may not reflect t he rates observed in practice. The most fr equent adverse react ions reported with the use of k etorolac tro meth a mine ophthal mic solutio ns have been tra nsient stin gi ng and burni ng on instillation. These reactions were reported by up to 40% of patie nts partici pating in clinic al t rials. Other adverse reactions occurring approxi mately 1 to 10% of the ti me during tre at ment with ketor olac tr ometh a mine ophthal mic solutio ns inc luded aller gic reactions, corneal ede ma, iritis, ocular inflammation, ocular ir rit ati on, super fici al ker atitis, and super ficial ocular in fectio ns. Other adverse reactions reported rarely with the use of ketorolac tro metha mine ophthal mic solutio ns included: c orneal infiltrates, corneal ulcer, eye dry ness, headac hes , and visual disturbance (blurry vision). 6.2 Postmarketing Experience The following adverse reactions have been identified during postmarketing use of ketorolac tromethamine ophthalmic solution 0.5% in clinical practice. Because they are reported voluntarily from a population of unknown size, estimates of frequency cannot be made. The reactions, which have been chosen for inclusion due to either their seriousness, frequency of reporting, possible causal connection to topical ketorolac tromethamine ophthalmic solution 0.5% or a combination of these factors, include bronchospasm or exacerbation of asthma, corneal erosion, corneal perforation, corneal thinning, and epithelial breakdown [see Warnings and Precautions ( 5.2 , 5.4 )].