SENSHIO FILM-COATED TABLET 60MG

Ospemifene

Source of information: Drugbank (External Link). Last updated on: 3rd July 18
*Trade Name used in the content below may not be the same as the HSA-registered product.

Active Ingredient / Synonyms

2-(4-(4-Chloro-1,2-diphenyl-but-1-enyl)phenoxy)ethanol | 2-(P-((Z)-4-Chloro-1,2-diphenyl-1-butenyl)phenoxy)ethanol | Deamino-hydroxytoremifene | Ospemifene |

Description

Ospemifene is a new selective non-hormonal estrogen receptor modulator (SERM) that is used for the treatment of moderate to severe dyspareunia, a symptom of vulvar and vaginal atrophy, due to menopause. FDA approved on February 26, 2013.

Indication

Ospemifene is used for the treatment of moderate to dyspareunia, a symptom of vulvar and vaginal atrophy, due to menopause.

Mechanism of Action

Ospemifene is a next generation SERM (selective estrogen receptor modulator) that selectively binds to estrogen receptors and either stimulates or blocks estrogen's activity in different tissue types. It has an agonistic effect on the endometrium.

Pharmacodynamics

The half maximal inhibitory concentration (IC50) for estrogen receptor (ER) alpha and beta are 0.8 μM and 1.7 μM, respectively. Ospemifene has potential uses in the management of osteoporosis in postmenopausal women. It interacts with osteoblasts and osteoclasts in such a way that it reduces bone turnover. It also has potential uses in the prevention of breast cancer. Studies suggest that ospemifene, in a dose-dependent manner, reduces the incidence of tumours.

Pharmacokinetics

Absorption:

When a single oral dose of ospemifene 60 mg is given to postmenopausal women under fasted conditions, the pharmacokinetic parameters are as follows: Tmax = 2 hours (range of 1 - 8 hours); Cmax = 533 ng/mL; AUC (0-inf) = 4165 ng•hr/mL. When the same aforementioned dose is given to postmenopausal women under fed conditions, the pharmacokinetic parameters are as follows: Tmax = 2.5 hours (1 - 6 hours); Cmax = 1198 ng/mL; AUC (0-inf) = 7521 ng•hr/mL. Accumulation occurs following repeated doses. Time to steady state = 9 days. Although the bioavailability of ospemifene has not been formally evaluated, it is expected to have a low bioavailability because of its lipophilic nature.

Distribution:

448 L

Metabolism:

Ospemifene is hepatically metabolized via CYP3A4, CYP2C9, CYP2C19, and CYP2B6. The major metabolite was 4-hydroxyospemifene, 25% of the parent compound will undergo this biotransformation. Other metabolites include 4'-hydroxy-ospemifene, <7% of the parent compound will undergo this biotransformation. In order of decreasing potency, ospemifene was suggested to be a weak inhibitor for CYP2B6, CYP2C9, CYP2C19, CYP2C8, CYP2D6 and CYP3A4.

Elimination:

Following an oral administration of ospemifene, approximately 75% and 7% of the dose was excreted in feces and urine, respectively. Less than 0.2% of the ospemifene dose was excreted unchanged in urine.

Half-life

Terminal half-life = 26 hours .

Clearance

Total body clearance = 9.16 L/hr.

Toxicity

Adverse reactions (≥1 percent) include: hot flush, vaginal discharge, muscle spasms, genital discharge, hyperhidrosis.

References

  1. Health Science Authority of Singapore - Reclassified POM
  2. Drugbank

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Approval Information

SENSHIO FILM-COATED TABLET 60MG was registered with Health Science Authority of Singapore by SHIONOGI SINGAPORE PTE LTD. It is marketed with the registration number of SIN15568P with effective from 2018-10-26.

This product contains 60.0mg of Ospemifene in the form of TABLET, FILM COATED.

The medicine was manufactured by Penn Pharmaceutical Services Ltd in UNITED KINGDOM, and Manufacturing Packaging Farmaca (MPF) B. V. in NETHERLANDS

It is a Presciption Only Medicine which can only be obtained from a doctor or a dentist, or from a pharmacist with a prescription from a Singapore-registered doctor or dentist.

Anatomical Therapeutic Chemical (ATC) Classification

Products Containing as Single Ingredient

Drug ID Trade Name Active Ingredients Forensic Class Registrant Status
1 DEXTROMETHORPHAN LINCTUS 15mg/5ml Dextromethorphan P Only DRUG HOUSES OF AUSTRALIA PTE LTD Active
22 ZENMOLIN SYRUP 2mg/5ml Salbutamol P Only DRUG HOUSES OF AUSTRALIA PTE LTD Active
41 APO-PROPRANOLOL TABLET 40mg Propranolol POM PHARMAFORTE SINGAPORE PTE LTD Active
42 APO-DIAZEPAM TABLET 2mg Diazepam POM PHARMAFORTE SINGAPORE PTE LTD Active
44 APO-DIAZEPAM TABLET 5mg Diazepam POM PHARMAFORTE SINGAPORE PTE LTD Active
45 APO-DIAZEPAM TABLET 10mg Diazepam POM PHARMAFORTE SINGAPORE PTE LTD Active
46 APO-PROPRANOLOL TABLET 10mg Propranolol POM PHARMAFORTE SINGAPORE PTE LTD Active
55 APO-ISDN TABLET 10mg Isosorbide Dinitrate POM PHARMAFORTE SINGAPORE PTE LTD Active
63 DIAPO TABLET 10mg Diazepam POM BEACONS PHARMACEUTICALS PTE LTD Active
64 FURMIDE TABLET 40mg Furosemide POM BEACONS PHARMACEUTICALS PTE LTD Active

Products Containing as Mixture Ingredient

Drug ID Trade Name Active Ingredients Forensic Class Registrant Status
5 DIPHENHYDRAMINE EXPECTORANT PAED. Ammonium Chloride|Diphenhydramine|Sodium Citrate P Only DRUG HOUSES OF AUSTRALIA PTE LTD Active
400 FAKTU SUPPOSITORY Cinchocaine|Policresulen P Only TAKEDA PHARMACEUTICALS (ASIA PACIFIC) PTE LTD Active
407 TRIMAXAZOLE TABLET Sulfamethoxazole|Trimethoprim POM BEACONS PHARMACEUTICALS PTE LTD Active
435 APO-SULFATRIM TABLET Sulfamethoxazole|Trimethoprim POM PHARMAFORTE SINGAPORE PTE LTD Active
508 APO-SULFATRIM PEDIATRIC TABLET Sulfamethoxazole|Trimethoprim POM PHARMAFORTE SINGAPORE PTE LTD Active
526 B.S. SUSPENSION Sulfamethoxazole|Trimethoprim POM APEX PHARMA MARKETING PTE LTD Active
583 CO-TRIMEXAZOLE SUSPENSION Sulfamethoxazole|Trimethoprim POM BEACONS PHARMACEUTICALS PTE LTD Active
676 BANEOCIN OINTMENT Bacitracin|Neomycin POM NOVARTIS (SINGAPORE) PTE LTD Active
678 BANEOCIN POWDER Bacitracin|Neomycin POM NOVARTIS (SINGAPORE) PTE LTD Active
706 TIENAM 500 FOR INJECTION Imipenem|Cilastatin POM MSD PHARMA (SINGAPORE) PTE LTD Active