ข้อมูลนี้มีวัตถุประสงค์เพื่อการศึกษาเท่านั้น ควรปรึกษาผู้เชี่ยวชาญด้านสุขภาพเสมอ เรียนรู้เพิ่มเติม

Difluprednate Ophthalmic

Prescription

ชื่อทางการค้า: Difluprednate Ophthalmic

รูปแบบยา
Drops
เส้นทางการให้ยา
OPHTHALMIC
ผู้ผลิต
Sandoz Inc

About This Medication

11 DESCRIPTION Difluprednate ophthalmic emulsion, 0.05% is a sterile, topical anti-inflammatory corticosteroid for ophthalmic use. The chemical name is 6α,9difluoro-11β,17,21-trihydroxypregna-1,4- diene-3,20-dione 21-acetate 17-butyrate (CAS number 23674-86-4). Difluprednate is represented by the following structural formula: Difluprednate has a molecular weight of 508.56 g/mol, and the empirical formula is C 27 H 34 F 2 O 7 . Each mL of difluprednate ophthalmic emulsion contains: Active: difluprednate 0.5 mg (0.05%); Inactives: boric acid, castor oil, edetate disodium, glycerin, polysorbate 80, sodium acetate, sodium hydroxide (to adjust the pH to 5.2 to 5.8), water for injection. Preservative: sorbic acid 0.1%. The emulsion is essentially isotonic with a tonicity of 304 to 411 mOsm/kg. ChemicalStructure

ส่วนประกอบออกฤทธิ์

ส่วนประกอบ ความแรง
Difluprednate -

ข้อบ่งใช้และการใช้งาน

1 INDICATIONS AND USAGE Difluprednate ophthalmic emulsion is a corticosteroid indicated for: • The treatment of inflammation and pain associated with ocular surgery. ( 1.1 ) • The treatment of endogenous anterior uveitis. ( 1.2 ) 1.1 Ocular Surgery Difluprednate ophthalmic emulsion is indicated for the treatment of inflammation and pain associated with ocular surgery. 1.2 Endogenous Anterior Uveitis Difluprednate ophthalmic emulsion is indicated for the treatment of endogenous anterior uveitis.

กลไกการทำงาน

12.1 Mechanism of Action Corticosteroids inhibit the inflammatory response to a variety of inciting agents and may delay or slow healing. They inhibit edema, fibrin deposition, capillary dilation, leukocyte migration, capillary proliferation, fibroblast proliferation, deposition of collagen, and scar formation associated with inflammation. There is no generally accepted explanation for the mechanism of action of ocular corticosteroids. However, corticosteroids are thought to act by the induction of phospholipase A2 inhibitory proteins, collectively called lipocortins. It is postulated that these proteins control the biosynthesis of potent mediators of inflammation, such as prostaglandins and leukotreines by inhibiting the release of their common precursor arachidonic acid. Arachidonic acid is released from membrane phospholipids by phospholipase A2. Difluprednate is structurally similar to other corticosteroids.

ขนาดยาและวิธีการให้ยา

2 DOSAGE AND ADMINISTRATION • For the treatment of inflammation and pain associated with ocular surgery, instill one drop into the conjunctival sac of the affected eye 4 times daily beginning 24 hours after surgery and continuing throughout the first 2 weeks of the postoperative period, followed by 2 times daily for a week and then a taper based on the response. ( 2.1 ) • For the treatment of endogenous anterior uveitis, instill one drop into the conjunctival sac of the affected eye 4 times daily for 14 days followed by tapering as clinically indicated. ( 2.2 ) 2.1 Ocular Surgery Instill one drop into the conjunctival sac of the affected eye 4 times daily beginning 24 hours after surgery and continuing throughout the first 2 weeks of the postoperative period, followed by 2 times daily for a week and then a taper based on the response. 2.2 Endogenous Anterior Uveitis Instill one drop into the conjunctival sac of the affected eye 4 times daily for 14 days followed by tapering as clinically indicated. 2.3 Prescribing Guidelines The initial prescription and renewal of the medication order beyond one bottle should be made by a physician only after examination of the patient with the aid of magnification, such as slit lamp biomicroscopy, and where appropriate, fluorescein staining. If signs and symptoms fail to improve after two days, the patient should be reevaluated. Not more than one bottle should be prescribed initially, and the prescription should not be refilled without further evaluation.

Side Effects Overview

6 ADVERSE REACTIONS The following serious reactions are found elsewhere in the labeling: • Intraocular Pressure ( IOP) Increase [see Warnings and Precautions ( 5.1 )] • Cataracts [see Warnings and Precautions ( 5.2 )] • Delayed Healing [see Warnings and Precautions ( 5.3 )] • Corneal and Scleral Melting [see Warnings and Precautions ( 5.4 )] • Bacterial Infections [see Warnings and Precautions ( 5.5 )] • Viral Infections [see Warnings and Precautions ( 5.6 )] • Fungal Infections [see Warnings and Precautions ( 5.7 )] For treatment of inflammation and pain associated with ocular surgery, most common adverse reactions (incidence 5% to 15%) are corneal edema, ciliary and conjunctival hyperemia, eye pain, photophobia, posterior capsule opacification, anterior chamber cells, anterior chamber flare, conjunctival edema, and blepharitis. For treatment of endogenous anterior uveitis, most common adverse reactions (incidence 5% to 10%) are blurred vision, eye irritation, eye pain, headache, increased IOP, iritis, limbal and conjunctival hyperemia, punctate keratitis, and uveitis. To report SUSPECTED ADVERSE REACTIONS, contact Sandoz Inc., at 1-800-525-8747 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch. 6.1 Ocular Surgery Ocular adverse reactions occurring in 5% to 15% of subjects in clinical studies with difluprednate ophthalmic emulsion included corneal edema, ciliary and conjunctival hyperemia, eye pain, photophobia, posterior capsule opacification, anterior chamber cells, anterior chamber flare, conjunctival edema, and blepharitis. Other ocular adverse reactions occurring in 1% to 5% of subjects, included reduced visual acuity, punctate keratitis, eye inflammation, and iritis. Ocular adverse reactions occurring in less than 1% of subjects, included application-site discomfort or irritation, corneal pigmentation and striae, episcleritis, eye pruritus, eyelid irritation and crusting, foreign body sensation, increased lacrimation, macular edema, sclera hyperemia, and uveitis. Most of these reactions may have been the consequence of the surgical procedure. 6.2 Endogenous Anterior Uveitis A total of 200 subjects participated in the clinical trials for endogenous anterior uveitis, of which 106 were exposed to difluprednate ophthalmic emulsion. The most common adverse reactions of those exposed to difluprednate ophthalmic emulsion occurring in 5% to 10% of subjects included blurred vision, eye irritation, eye pain, headache, increased IOP, iritis, limbal and conjunctival hyperemia, punctate keratitis, and uveitis. Adverse reactions occurring in 2% to 5% of subjects included anterior chamber flare, corneal edema, dry eye, iridocyclitis, photophobia, and reduced visual acuity.

คำเตือนและข้อควรระวัง

ข้อห้ามใช้

เภสัชจลนศาสตร์

12.3 Pharmacokinetics Difluprednate undergoes deacetylation in vivo to 6α, 9-difluoroprednisolone 17-butyrate (DFB), an active metabolite of difluprednate. Clinical pharmacokinetic studies of difluprednate after repeat ocular instillation of 2 drops of difluprednate (0.01% or 0.05%) 4 times per day for 7 days showed that DFB levels in blood were below the quantification limit (50 ng/mL) at all time points for all subjects, indicating that the systemic absorption of difluprednate after ocular instillation of difluprednate ophthalmic emulsion is limited.

Frequently Asked Questions

1 INDICATIONS AND USAGE Difluprednate ophthalmic emulsion is a corticosteroid indicated for: • The treatment of inflammation and pain associated with ocular surgery. ( 1.1 ) • The treatment of endogenous anterior uveitis. ( 1.2 ) 1.1 Ocular Surgery Difluprednate ophthalmic emulsion is indicated for the treatment of inflammation and pain associated with ocular surgery. 1.2 Endogenous Anterior Uveitis Difluprednate ophthalmic emulsion is indicated for the treatment of endogenous anterior uveitis.

2 DOSAGE AND ADMINISTRATION • For the treatment of inflammation and pain associated with ocular surgery, instill one drop into the conjunctival sac of the affected eye 4 times daily beginning 24 hours after surgery and continuing throughout the first 2 weeks of the postoperative period, followed by 2 times daily for a week and then a taper based on the response. ( 2.1 ) • For the treatment of endogenous anterior uveitis, instill one drop into the conjunctival sac …

5 WARNINGS AND PRECAUTIONS • Intraocular Pressure (IOP) Increase: Prolonged use of corticosteroids may result in glaucoma with damage to the optic nerve, defects in visual acuity and fields of vision. If difluprednate ophthalmic emulsion is used for 10 days or longer, IOP should be monitored. ( 5.1 ) • Cataracts: Use of corticosteroids may result in posterior subcapsular cataract formation. ( 5.2 ) • Delayed Healing: The use of corticosteroids after cataract surgery may delay healing and increase the …

4 CONTRAINDICATIONS Difluprednate ophthalmic emulsion, as with other ophthalmic corticosteroids, is contraindicated in most active viral diseases of the cornea and conjunctiva, including epithelial herpes simplex keratitis (dendritic keratitis), vaccinia, and varicella, and also in mycobacterial infection of the eye and fungal disease of ocular structures. Difluprednate ophthalmic emulsion is contraindicated in most active viral diseases of the cornea and conjunctiva, including epithelial herpes simplex keratitis (dendritic keratitis), vaccinia, and varicella, and also in mycobacterial infection of the eye and …

Difluprednate Ophthalmic is a prescription medication. You will need a valid prescription from a licensed healthcare provider.

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References & Data Sources

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แหล่งข้อมูล: DailyMed (NLM), openFDA, MFDS

Medical Disclaimer

This content is for educational and informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before making medication decisions.

Data sources: ChEMBL, PubChem, DailyMed.