DBL MORPHINE SULFATE INJECTION BP 10mg/ML

Contents

Morphine

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

(−)-morphine | (5alpha,6alpha)-17-methyl-7,8-didehydro-4,5-epoxymorphinan-3,6-diol | (5alpha,6alpha)-didehydro-4,5-epoxy-17-methylmorphinan-3,6-diol | (5R,6S,9R,13S,14R)-4,5-epoxy-N-methyl-7-morphinen-3,6-diol | (5α,6α)-17-methyl-7,8-didehydro-4,5-epoxymorphinan-3,6-diol | (5α,6α)-didehydro-4,5-epoxy-17-methylmorphinan-3,6-diol | (7R,7AS,12bs)-3-methyl-2,3,4,4a,7,7a-hexahydro-1H-4,12-methano[1]benzofuro[3,2-e]isoquinoline-7,9-diol | anhydrous morphine | morfina | Morphia | Morphin | Morphinum | Morphium | Morphine |

Description

The principal alkaloid in opium and the prototype opiate analgesic and narcotic. Morphine has widespread effects in the central nervous system and on smooth muscle. In January, 2017, morphine was approved for the treatment of chronic pain.

Indication

For the relief and treatment of severe pain.

Mechanism of Action

The precise mechanism of the analgesic action of morphine is unknown. However, specific CNS opiate receptors have been identified and likely play a role in the expression of analgesic effects. Morphine first acts on the mu-opioid receptors. The mechanism of respiratory depression involves a reduction in the responsiveness of the brain stem respiratory centers to increases in carbon dioxide tension and to electrical stimulation. It has been shown that morphine binds to and inhibits GABA inhibitory interneurons. These interneurons normally inhibit the descending pain inhibition pathway. So, without the inhibitory signals, pain modulation can proceed downstream.

Pharmacodynamics

Morphine is a narcotic pain management agent indicated for the relief of pain in patients who require opioid analgesics for more than a few days. Morphine interacts predominantly with the opioid mu-receptor. These mu-binding sites are discretely distributed in the human brain, with high densities in the posterior amygdala, hypothalamus, thalamus, nucleus caudatus, putamen, and certain cortical areas. They are also found on the terminal axons of primary afferents within laminae I and II (substantia gelatinosa) of the spinal cord and in the spinal nucleus of the trigeminal nerve. In clinical settings, morphine exerts its principal pharmacological effect on the central nervous system and gastrointestinal tract. Its primary actions of therapeutic value are analgesia and sedation. Morphine appears to increase the patient's tolerance for pain and to decrease discomfort, although the presence of the pain itself may still be recognized. In addition to analgesia, alterations in mood, euphoria and dysphoria, and drowsiness commonly occur. Opioids also produce respiratory depression by direct action on brain stem respiratory centers.

Pharmacokinetics

Absorption:

Bioavailability is approximately 30%.

Distribution:

* 1 to 6 L/kg

Metabolism:

Primarily hepatic (90%), converted to dihydromorphinone and normorphine. Also converted to morphine-3-glucuronide (M3G) and morphine-6-glucuronide. Virtually all morphine is converted to glucuronide metabolites; only a small fraction (less than 5%) of absorbed morphine is demethylated.

Elimination:

A small amount of glucuronide conjugates are excreted in bile, with minor enterohepatic recycling. Seven to 10% of administered morphine sulfate is excreted in the feces.

Half-life

2-4 hours

Clearance

* 20 – 30 mL/min/kg [Adult] * 1852 +/- 116 mL/min [Chinese] * 1495 +/- 80 mL/min [Caucasian]

Toxicity

LD50 = 461 mg/kg (rat, oral), 600 mg/kg (mouse, oral). Human lethal dose by ingestion is 120-250 mg of morphine sulfate. Symptoms of overdose include cold, clammy skin, flaccid muscles, fluid in the lungs, lowered blood pressure, "pinpoint" or dilated pupils, sleepiness leading to stupor and coma, slowed breathing, and slow pulse rate.

References

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

Although best effort has been made to ensure the information provided is correct and updated, users are advised to visit HSA Official website whenever in doubt. Please see Disclaimers.
We welcome all the content error reporting/feedback. Please contact us @ Text Us!

Approval Information

DBL MORPHINE SULFATE INJECTION BP 10mg/ML was registered with Health Science Authority of Singapore by HOSPIRA SINGAPORE PTE LTD. It is marketed with the registration number of SIN00757P with effective from 1988-04-05.

This product contains 10mg/ml of Morphine in the form of INJECTION.

The medicine was manufactured by Hameln Pharmaceuticals GmbH in GERMANY

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

ATC Code: N02AA01

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