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warnings and cautions
5 WARNINGS AND PRECAUTIONS Pigmentation: pigmentation of the iris, periorbital tissue (eyelid) and eyelashes can occur. Iris pigmentation likely to be permanent. (5.1) Eyelash Changes: gradual change to eyelashes including increased length, thickness and number of lashes. Usually reversible. (5.2) 5.1 PIgmentation Latanoprost ophthalmic solution has been reported to cause changes to pigmented tissues. The most frequently reported changes have been increased pigmentation of the iris, periorbital tissue (eyelid), and eyelashes. Pigmentation is expected to increase as long as latanoprost is administered. The pigmentation change is due to increased melanin content in the melanocytes rather than to an increase in the number of melanocytes. After discontinuation of latanoprost, pigmentation of the iris is likely to be permanent, while pigmentation of the periorbital tissue and eyelash changes have been reported to be reversible in some patients. Patients who receive treatment should be informed of the possibility of increased pigmentation. Beyond 5 years the effects of increased pigmentation are not known [see Clinical Studies (14.2)]. Iris color change may not be noticeable for several months to years. Typically, the brown pigmentation around the pupil spreads concentrically towards the periphery of the iris and the entire iris or parts of the iris become more brownish. Neither nevi nor freckles of the iris appear to be affected by treatment. While treatment with latanoprost ophthalmic solution can be continued in patients who develop noticeably increased iris pigmentation, these patients should be examined regularly [see Patient Counseling Information (17.1) ]. 5.2 Eyelash Changes Latanoprost ophthalmic solution may gradually change eyelashes and vellus hair in the treated eye; these changes include increased length, thickness, pigmentation, the number of lashes or hairs, and misdirected growth of eyelashes. Eyelash changes are usually reversible upon discontinuation of treatment [see Patient Counseling Information (17.2) ]. 5.3 Intraocular Inflammation Latanoprost ophthalmic solution should be used with caution in patients with a history of intraocular inflammation (iritis/uveitis) and should generally not be used in patients with active intraocular inflammation because inflammation may be exacerbated. 5.4 Macular Edema Macular edema, including cystoid macular edema, has been reported during treatment with latanoprost ophthalmic solution. Latanoprost should be used with caution in aphakic patients, in pseudophakic patients with a torn posterior lens capsule, or in patients with known risk factors for macular edema. 5.5 Herpetic Keratitis Reactivation of Herpes Simplex keratitis has been reported during treatment with latanoprost ophthalmic solution. Latanoprost should be used with caution in patients with a history of herpetic keratitis. Latanoprost should be avoided in cases of active herpes simplex keratitis because inflammation may be exacerbated. 5.6 Bacterial Keratitis There have been reports of bacterial keratitis associated with the use of multiple-dose containers of topical ophthalmic products. These containers had been inadvertently contaminated by patients who, in most cases, had a concurrent corneal disease or a disruption of the ocular epithelial surface [see Patient Counseling Information (17.3)] . 5.7 Use with Contact Lenses Contact lenses should be removed prior to the administration of latanoprost ophthalmic solution, and may be reinserted 15 minutes after administration.
6 ADVERSE REACTIONS The following adverse reactions were reported in postmarketing experience and are discussed in greater detail in other sections of the label: Iris pigmentation changes [see Warnings and Precautions (5.1)] Eyelid skin darkening [see Warnings and Precautions (5.1)] Eyelash changes (increased length, thickness, pigmentation, and number of lashes) [see Warnings and Precautions (5.2)] Intraocular inflammation (iritis/uveitis) [see Warnings and Precautions (5.3)] Macular edema, including cystoid macular edema [see Warnings and Precautions (5.4)] Most common adverse reactions (≥ 4%) from clinical trials are blurred vision, burning and stinging, conjunctival hyperemia, foreign body sensation, itching, increased pigmentation of the iris, punctate epithelial keratopathy, and upper respiratory tract infection/cold/flu. (6) To report SUSPECTED ADVERSE REACTIONS, contact American Regent, Inc. at 1-800-734-9236 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch . 6.1 Clinical Trials Experience Because clinical trials are conducted under widely varying conditions, the adverse reaction rates observed in the clinical studies of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in clinical practice. Latanoprost ophthalmic solution was studied in three multicenter, randomized, controlled clinical trials. Patients received 50 mcg/mL latanoprost once daily or 5 mg/mL active-comparator (timolol) twice daily. The patient population studied had a mean age of 65±10 years. Seven percent of patients withdrew before the 6-month endpoint. Table 1: Ocular Adverse Reactions and Ocular signs/symptoms reported by 5% to 15% of patients receiving Latanoprost Symptom/Finding Adverse Reactions (incidence (%)) Latanoprost (n=460) Timolol (n=369) Foreign body sensation 13 8 Punctate epithelial keratopathy 10 9 Stinging 9 12 Conjunctival hyperemia 8 3 Blurred vision 8 8 Itching 8 8 Burning 7 8 Increased pigmentation of the iris 7 0 Less than 1% of the patients treated with latanoprost required discontinuation of therapy because of intolerance to conjuctival hyperemia. Table 2: Adverse Reactions that were reported in 1% to 5% of patients receiving Latanoprost Adverse Reactions (incidence (%)) Latanoprost (n=460) Timolol (n=369) Ocular Events/Signs and Symptoms Excessive tearing 4 6 Lid discomfort/pain 4 2 Dry eye 3 3 Eye pain 3 3 Lid crusting 3 3 Lid erythema 3 2 Photophobia 2 1 Lid edema 1 3 Systemic Events Upper respiratory tract infection/cold/flu 3 3 Muscle/joint/back pain 1 0.5 Rash/allergic skin reaction 1 0.3 6.2 Postmarketing Experience The following reactions have been identified during postmarketing use of latanoprost ophthalmic solution 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 latanoprost, or a combination of these factors, include: Nervous System disorders : dizziness, headache, and toxic epidermal necrolysis Eye Disorders : eyelash and vellus hair changes (increased length, thickness, pigmentation, and number); keratitis; corneal edema and erosions; intraocular inflammation (iritis/uveitis); macular edema, including cystoid macular edema; misdirected eyelashes sometimes resulting in eye irritation; periorbital and lid changes resulting in deepening of the eyelid sulcus Respiratory, Thoracic and Mediastinal Disorders : asthma and exacerbation of asthma; dyspnea Skin and Subcutaneous Tissue Disorders: eyelid skin darkening Infections and Infestations : Herpes keratitis