英文药名：ZIOPTAN 0.0015％（tafluprost ophthalmic solution）

中文药名：他氟前列腺素点眼液

生产厂家：默沙东公司
药品介绍
商品名：Zioptan（美国），Saflutan（欧洲）
通用名：tafluprost(他氟前列腺素)
生产商：默克(Merck，美国和加拿大以外国家名为默沙东)
Zioptan于2012年2月14日获FDA批准上市，是首个不含防腐剂的前列腺素类似物的滴眼药，应用于开角型青光眼或高眼压患者，降低眼内压。
剂量和给药方法
在患眼(s)中一滴每天1次在傍晚。
剂型和规格
含tafluprost眼溶液0.015 mg/mL。
禁忌证
无。
包装规格（ZIOPTAN）
0.3毫升/支*30支/盒
0.3毫升/支*90支/盒

HIGHLIGHTS OF PRESCRIBING INFORMATION
These highlights do not include all the information needed to use ZIOPTAN (tafluprost ophthalmic solution) 0.0015% safely and effectively. See full prescribing information for ZIOPTAN.
ZIOPTAN™ (tafluprost ophthalmic solution) 0.0015%
Initial U.S. Approval: 2012
INDICATIONS AND USAGE
ZIOPTAN (tafluprost ophthalmic solution) 0.0015% is a prostaglandin analog indicated for reducing elevated intraocular pressure in patients with open-angle glaucoma or ocular hypertension. (1)
DOSAGE AND ADMINISTRATION
One drop in the affected eye(s) once daily in the evening. (2)
DOSAGE FORMS AND STRENGTHS
Ophthalmic solution containing tafluprost 0.015 mg/mL. (3)
CONTRAINDICATIONS
None. (4)
WARNINGS AND PRECAUTIONS
Pigmentation
Pigmentation of the iris, periorbital tissue (eyelid) and eyelashes can occur. Iris pigmentation is likely to be permanent. (5.1)
Eyelash Changes
Gradual changes to eyelashes including increased length, thickness and number of lashes. Usually reversible. (5.2)
ADVERSE REACTIONS
Most common ocular adverse reaction is conjunctival hyperemia (range 4% – 20%). (6.1)
To report SUSPECTED ADVERSE REACTIONS, contact Merck Sharp & Dohme Corp., a subsidiary of Merck & Co., Inc., at 1-877-888-4231 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch.
USE IN SPECIFIC POPULATIONS
Use in pediatric patients is not recommended because of potential safety concerns related to increased pigmentation following long-term chronic use. (8.4)
See 17 for PATIENT COUNSELING INFORMATION and FDA-approved patient labeling.
Revised: 8/2013
FULL PRESCRIBING INFORMATION: CONTENTS*
1 INDICATIONS AND USAGE
ZIOPTAN™ (tafluprost ophthalmic solution) 0.0015% is indicated for reducing elevated intraocular pressure in patients with open-angle glaucoma or ocular hypertension.
2 DOSAGE AND ADMINISTRATION
The recommended dose is one drop of ZIOPTAN in the conjunctival sac of the affected eye(s) once daily in the evening.
The dose should not exceed once daily since it has been shown that more frequent administration of prostaglandin analogs may lessen the intraocular pressure lowering effect.
Reduction of the intraocular pressure starts approximately 2 to 4 hours after the first administration with the maximum effect reached after 12 hours.
ZIOPTAN may be used concomitantly with other topical ophthalmic drug products to lower intraocular pressure. If more than one topical ophthalmic product is being used, each one should be administered at least 5 minutes apart.
The solution from one individual unit is to be used immediately after opening for administration to one or both eyes. Since sterility cannot be maintained after the individual unit is opened, the remaining contents should be discarded immediately after administration.
3 DOSAGE FORMS AND STRENGTHS
Ophthalmic solution containing tafluprost 0.015 mg/mL.
4 CONTRAINDICATIONS
None.
5 WARNINGS AND PRECAUTIONS
5.1 Pigmentation
Tafluprost 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 tafluprost 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 tafluprost, 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. The long term effects of increased pigmentation are not known.
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 ZIOPTAN can be continued in patients who develop noticeably increased iris pigmentation, these patients should be examined regularly. [See Patient Counseling Information (17.3).]
5.2 Eyelash Changes
ZIOPTAN may gradually change eyelashes and vellus hair in the treated eye. These changes include increased length, color, thickness, shape and number of lashes. Eyelash changes are usually reversible upon discontinuation of treatment.
5.3 Intraocular Inflammation
ZIOPTAN should be used with caution in patients with active intraocular inflammation (e.g., iritis/uveitis) because the inflammation may be exacerbated.
5.4 Macular Edema
Macular edema, including cystoid macular edema, has been reported during treatment with prostaglandin F2α analogs. ZIOPTAN 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.
6 ADVERSE REACTIONS
6.l Studies Experience
Because clinical studies are conducted under widely varying conditions, adverse reaction rates observed in the clinical studies of a drug cannot be directly compared to rates in the clinical studies of another drug and may not reflect the rates observed in practice.
Preservative-containing or preservative-free tafluprost 0.0015% was evaluated in 905 patients in five controlled clinical studies of up to 24-months duration. The most common adverse reaction observed in patients treated with tafluprost was conjunctival hyperemia which was reported in a range of 4% – 20% of patients. Approximately 1% of patients discontinued therapy due to ocular adverse reactions.
Ocular adverse reactions reported at an incidence of ≥2% in these clinical studies included ocular stinging/irritation (7%), ocular pruritus including allergic conjunctivitis (5%), cataract (3%), dry eye (3%), ocular pain (3%), eyelash darkening (2%), growth of eyelashes (2%) and vision blurred (2%).
Nonocular adverse reactions reported at an incidence of 2% – 6% in these clinical studies in patients treated with tafluprost 0.0015% were headache (6%), common cold (4%), cough (3%) and urinary tract infection (2%).
6.2 Postmarketing Experience
The following adverse reactions have been identified during postapproval use of tafluprost. Because postapproval adverse reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure.
Respiratory disorders: exacerbation of asthma, dyspnea
Eye disorders: iritis/uveitis
In postmarketing use with prostaglandin analogs, periorbital and lid changes including deepening of the eyelid sulcus have been observed.
8 USE IN SPECIFIC POPULATIONS
8.1 Pregnancy
Pregnancy Category C.
Teratogenic effects: In embryo-fetal development studies in rats and rabbits, tafluprost administered intravenously was teratogenic. Tafluprost caused increases in post-implantation losses in rats and rabbits and reductions in fetal body weights in rats. Tafluprost also increased the incidence of vertebral skeletal abnormalities in rats and the incidence of skull, brain and spine malformations in rabbits. In rats, there were no adverse effects on embryo-fetal development at a dose of 3 mcg/kg/day corresponding to maternal plasma levels of tafluprost acid that were 343 times the maximum clinical exposure based on Cmax. In rabbits, effects were seen at a tafluprost dose of 0.03 mcg/kg/day corresponding to maternal plasma levels of tafluprost acid during organogenesis that were approximately 5 times higher than the clinical exposure based on Cmax. At the no-effect dose in rabbits (0.01 mcg/kg/day), maternal plasma levels of tafluprost acid were below the lower level of quantification (20 pg/mL).
In a pre- and postnatal development study in rats, increased mortality of newborns, decreased body weights and delayed pinna unfolding were observed in offsprings. The no observed adverse effect level was at a tafluprost intravenous dose of 0.3 mcg/kg/day which is greater than 3 times the maximum recommended clinical dose based on body surface area comparison.
There are no adequate and well-controlled studies in pregnant woman. Although animal reproduction studies are not always predictive of human response, ZIOPTAN should not be used during pregnancy unless the potential benefit justifies the potential risk to the fetus.
Women of childbearing age/potential should have adequate contraceptive measures in place.
8.3 Nursing Mothers
A study in lactating rats demonstrated that radio-labeled tafluprost and/or its metabolites were excreted in milk. It is not known whether this drug or its metabolites are excreted in human milk. Because many drugs are excreted in human milk, caution should be exercised when ZIOPTAN is administered to a nursing woman.
8.4 Pediatric Use
Use in pediatric patients is not recommended because of potential safety concerns related to increased pigmentation following long-term chronic use.
8.5 Geriatric Use
No overall clinical differences in safety or effectiveness have been observed between elderly and other adult patients.
11 DESCRIPTION
Tafluprost is a fluorinated analog of prostaglandin F2α. The chemical name for tafluprost is 1-methylethyl (5Z)-7-{(1R, 2R, 3R, 5S)-2-[(1E)-3,3-difluoro-4-phenoxy-1-butenyl}-3,5-dihydroxycyclopentyl]-5-heptenoate. The molecular formula of tafluprost is C25H34F2O5 and its molecular weight is 452.53.
Its structural formula is:

Tafluprost is a colorless to light yellow viscous liquid that is practically insoluble in water.
ZIOPTAN (tafluprost ophthalmic solution) 0.0015% is supplied as a sterile solution of tafluprost with a pH range of 5.5 – 6.7 and an Osmolality range of 260 – 300 mOsmol/kg.
ZIOPTAN contains Active: tafluprost 0.015 mg/mL; Inactives: glycerol, sodium dihydrogen phosphate dihydrate, disodium edetate, polysorbate 80, hydrochloric acid and/or sodium hydroxide (to adjust pH) and Water for Injection.
ZIOPTAN does not contain a preservative.
12 CLINICAL PHARMACOLOGY
12.1 Mechanism of Action
Tafluprost acid, a prostaglandin analog is a selective FP prostanoid receptor agonist which is believed to reduce intraocular pressure by increasing uveoscleral outflow. The exact mechanism of action is unknown at this time.
12.3 Pharmacokinetics
Absorption
Following instillation, tafluprost is absorbed through the cornea and is hydrolyzed to the biologically active acid metabolite, tafluprost acid. Following instillation of one drop of the 0.0015% solution once daily into each eye of healthy volunteers, the plasma concentrations of tafluprost acid peaked at a median time of 10 minutes on both Days 1 and 8. The mean plasma Cmax of tafluprost acid were 26 pg/mL and 27 pg/mL on Day 1, and Day 8, respectively. The mean plasma AUC estimates of tafluprost acid were 394 pg*min/mL and 432 pg*min/mL on Day 1 and 8, respectively.
Metabolism
Tafluprost, an ester prodrug, is hydrolyzed to its biologically active acid metabolite in the eye. The acid metabolite is further metabolized via fatty acid β-oxidation and phase II conjugation.
Elimination
Mean plasma tafluprost acid concentrations were below the limit of quantification of the bioanalytical assay (10 pg/mL) at 30 minutes following topical ocular administration of tafluprost 0.0015% ophthalmic solution.
13 NONCLINICAL TOXICOLOGY
13.1 Carcinogenesis, Mutagenesis, Impairment of Fertility
Tafluprost was not carcinogenic when administered subcutaneously daily for 24 months at doses up to 30 mcg/kg/day in rats and for 18 months at doses up to 100 mcg/kg/day in mice (over 1600 and 1300 times, respectively, the maximum clinical exposure based on plasma AUC).
Tafluprost was not mutagenic or clastogenic in a battery of genetic toxicology studies, including an in vitro microbial mutagenesis assay, an in vitro chromosomal aberration assay in Chinese hamster lung cells, and an in vivo mouse micronucleus assay in bone marrow.
In rats, no adverse effects on mating performance or fertility were observed with intravenous dosing of tafluprost at a dose of 100 mcg/kg/day (over 14000 times the maximum clinical exposure based on plasma Cmax or over 3600 times based on plasma AUC).
14 CLINICAL STUDIES
In clinical studies up to 24 months in duration, patients with open-angle glaucoma or ocular hypertension and baseline pressure of 23–26 mm Hg who were treated with ZIOPTAN dosed once daily in the evening demonstrated reductions in intraocular pressure at 3 and 6 months of 6–8 mmHg and 5–8 mmHg, respectively.
16 HOW SUPPLIED/STORAGE AND HANDLING
ZIOPTAN (tafluprost ophthalmic solution) 0.0015% is supplied as a sterile solution in translucent low density polyethylene single-use containers packaged in foil pouches (10 single-use containers per pouch). Each single-use container has 0.3 mL solution corresponding to 0.0045 mg tafluprost.
NDC 0006-3931-30; Unit-of-Use Carton of 30.
NDC 0006-3931-54; Unit-of-Use Carton of 90.
Storage:
Store refrigerated at 2–8°C (36–46°F). Store in the original pouch. After the pouch is opened, the single-use containers may be stored in the opened foil pouch for up to 28 days at room temperature: 20–25°C (68–77°F). Protect from moisture. Write down the date you open the foil pouch in the space provided on the pouch. Discard any unused containers 28 days after first opening the pouch.
17 PATIENT COUNSELING INFORMATION
See FDA-Approved Patient Labeling (Patient Information).
17.1 Nightly Application
Advise patients to not exceed once daily dosing since more frequent administration may decrease the intraocular pressure lowering effect of ZIOPTAN.
17.2 Handling the Single-Use Container
Advise patients that ZIOPTAN is a sterile solution that does not contain a preservative. The solution from one individual unit is to be used immediately after opening for administration to one or both eyes. Since sterility cannot be maintained after the individual unit is opened, the remaining contents should be discarded immediately after administration.
17.3 Potential for Pigmentation
Advise patients about the potential for increased brown pigmentation of the iris, which may be permanent. Also inform patients about the possibility of eyelid skin darkening, which may be reversible after discontinuation of ZIOPTAN.
17.4 Potential for Eyelash Changes
Inform patients of the possibility of eyelash and vellus hair changes in the treated eye during treatment with ZIOPTAN. These changes may result in a disparity between eyes in length, thickness, pigmentation, number of eyelashes or vellus hairs, and/or direction of eyelash growth. Eyelash changes are usually reversible upon discontinuation of treatment.
17.5 When to Seek Physician Advice
Advise patients that if they develop a new ocular condition (e.g., trauma or infection), experience a sudden decrease in visual acuity, have ocular surgery, or develop any ocular reactions, particularly conjunctivitis and eyelid reactions, they should immediately seek their physician's advice concerning the continued use of ZIOPTAN.
17.6 Use with Other Ophthalmic Drugs
If more than one topical ophthalmic drug is being used, the drugs should be administered at least five (5) minutes between applications.
17.7 Storage Information
Instruct patients on proper storage of cartons, unopened foil pouches, and opened foil pouches [see How Supplied/Storage and Handling (16)]. Recommended storage for cartons and unopened foil pouches is to store refrigerated at 2–8°C (36–46°F). After the pouch is opened, the single-use containers may be stored in the opened foil pouch for up to 28 days at room temperature: 20–25°C (68–77°F). Protect from moisture.

ZIOPTAN（美国）、タプロス点眼液（日本）、Saflutan（欧洲）
他氟前列腺素(Tafluprost)由日本参天制药和默沙东公司联合开发，商品名“Saflutan”，于2008年首次在德国上市，用于治疗原发性开角型青光眼和高眼压。
他氟前列素是一种选择性的前列腺素受体激动剂， 本品是一只酯化的前药，可加强其角巩膜渗透性，经酶水解后转化成具有活性的羧酸形式(AFP-172)而进入房水中。AFP-172通过与前列腺素FR受体相互作用，促进脉络膜巩膜间的房水流出，从而达到降眼压。
这同目前上市的前列腺素(PG)及其类似物的作用机制相同。他氟前列素滴眼液在第一次给药大约2-4 h后开始发挥降眼压作用，12h后达到最大效果。
他氟前列素滴眼液虽与已上市的拉坦前列素滴眼液的降眼压效果相似，但作用持续时间更长，且局部不良反应较轻微。