Fentanyl Citrate Injection: A Comprehensive Guide to Brands and Clinical Use in the UK
Fentanyl citrate is a potent synthetic opioid analgesic that has actually stayed a foundation of anesthesia and intensive care medicine since its development in the 1960s. In the United Kingdom, it is classified as a Class A drug under the Misuse of Drugs Act 1971 and is strictly managed as a Schedule 2 Controlled Drug (CD). Mainly used for its rapid beginning and brief period of action, fentanyl citrate injection is an important tool for clinicians managing sharp pain, surgical analgesia, and sedation.
This article provides an in-depth exploration of the fentanyl citrate injection brands readily available in the UK, their medical signs, regulative framework, and safety profiles.
Understanding Fentanyl Citrate
Fentanyl citrate is around 50 to 100 times more powerful than morphine. Its high lipid solubility enables it to cross the blood-brain barrier rapidly, offering nearly instant analgesic results when administered intravenously. In website , it is primarily made use of in medical facility settings-- particularly in operating theatres, emergency departments, and Intensive Care Units (ICUs).
Clinical Indications
The clinical applications of fentanyl citrate injection in the UK are broad however particular to controlled environments:
- Analgesic Supplement: Used during personnel treatments to supply profound analgesia.
- Induction of Anesthesia: Often utilized alongside induction representatives to blunt the cardiovascular response to intubation.
- Post-operative Pain Management: Administered in recovery rooms for immediate relief of serious pain.
- Sedation: Used in ICUs for clients needing mechanical ventilation.
Fentanyl Citrate Injection Brands in the UK
In the United Kingdom, while the initial trademark name developed by Janssen-Cilag was Sublimaze, the market is now dominated by top quality generic variations manufactured by various pharmaceutical companies. These products need to be licensed by the Medicines and Healthcare items Regulatory Agency (MHRA) to guarantee they fulfill stringent security and effectiveness requirements.
Leading Manufacturers and Suppliers
The UK supply chain for fentanyl citrate injection depends on several key players:
- Hameln Pharma: One of the most common providers in NHS healthcare facilities. They offer fentanyl in numerous sizes of ampoules.
- Martindale Pharma (Ethypharm): A major UK-based producer specializing in important care and sterilized injectables.
- Mawdsleys Specialty Services: Often associated with the distribution and supply of specialized formulations.
- Wockhardt UK: Provides generic alternatives for hospital use.
Summary of Available Presentations
The following table outlines the typical brand names and discussions of fentanyl citrate injection currently utilized within the UK health care infrastructure.
| Brand/Manufacturer | Common Concentration | Readily Available Volume (Fill Size) | Total Content |
|---|---|---|---|
| Sublimaze (Janssen) | 50 micrograms/ml | 2ml, 10ml | 100mcg, 500mcg |
| Hameln Pharma | 50 micrograms/ml | 2ml, 10ml, 20ml | 100mcg, 500mcg, 1mg |
| Martindale Pharma | 50 micrograms/ml | 2ml, 10ml | 100mcg, 500mcg |
| Ethypharm | 50 micrograms/ml | 10ml, 20ml | 500mcg, 1mg |
| Wockhardt UK | 50 micrograms/ml | 2ml, 10ml | 100mcg, 500mcg |
Pharmacology and Mechanism of Action
Fentanyl acts primarily as an agonist at the mu-opioid receptors in the central anxious system (CNS). By binding to these receptors, it inhibits ascending discomfort pathways, alters the perception of and response to discomfort, and produces generalized CNS anxiety.
Secret Pharmacokinetic Properties:
- Onset of Action: 1-- 2 minutes (Intravenous).
- Peak Effect: 3-- 5 minutes.
- Duration: 30-- 60 minutes (shorter than morphine due to redistribution into fat and muscle).
- Metabolism: Hepatic by means of the CYP3A4 enzyme system.
- Excretion: Primarily kidney.
Regulatory and Safety Requirements in the UK
Due to the fact that fentanyl citrate is a Schedule 2 Controlled Drug, its handling in the UK is subject to the Misuse of Drugs Regulations 2001. These policies mandate rigorous procedures to avoid diversion and guarantee patient safety.
Legal Requirements for Healthcare Facilities:
- Storage: Must be stored in a locked, double-bolted cabinet (CD cupboard) that satisfies British Standards.
- Record Keeping: Every dosage administered, gotten, or disposed of must be recorded in a Controlled Drugs Register (CDR).
- Prescribing: All prescriptions need to satisfy particular legal requirements, including the total amount written in both words and figures.
- Damage: Expired or contaminated vials must be "rendered irretrievable" in the presence of an authorized witness.
Typical Side Effects and Adverse Reactions
While extremely effective, fentanyl citrate carries a threat of considerable side impacts, especially if not titrated thoroughly.
Respiratory System:The most important side impact is breathing depression. This is dose-dependent and can lead to apnea if the client is not kept track of or aerated.
Cardiovascular System:Fentanyl can cause bradycardia (slow heart rate) and hypotension, though it is usually thought about more cardiovascularly stable than morphine.
Musculoskeletal System:An unique side impact of rapid, high-dose fentanyl administration is "wooden chest syndrome" (skeletal muscle rigidness), which can make mechanical ventilation hard.
Other Common Side Effects:
- Nausea and vomiting.
- Dizziness or euphoria.
- Pruritus (itching).
- Biliary tract spasm.
Administration Guidelines
In the UK, fentanyl citrate injections are generally administered by anesthesiologists, specifically trained nurses, or emergency medication clinicians.
- Intravenous (IV) Bolus: Used for fast discomfort relief or induction of anesthesia.
- Continuous Infusion: Common in the ICU for long-term sedation. Concentrations are frequently standardized by regional healthcare facility trusts (e.g., 1mg in 50ml or 2.5 mg in 50ml).
- Patient-Controlled Analgesia (PCA): Less common than morphine PCAs, but used for patients with morphine allergic reactions or kidney problems.
Comparison of Fentanyl vs. Other Injectable Opioids
| Feature | Fentanyl | Morphine | Remifentanil |
|---|---|---|---|
| Potency (Approx) | 100x Morphine | 1x (Baseline) | 100x Morphine |
| Beginning | Really Rapid (1-2 min) | Moderate (15-30 min) | Immediate (30-60 sec) |
| Duration | Short (30-60 minutes) | Long (4 hours) | Ultra-short (3-10 min) |
| Histamine Release | Extremely Low | High | Low |
| UK Legal Status | Set up 2 CD | Set up 2 CD | Schedule 2 CD |
Fentanyl citrate injection remains a vital element of the UK's medicinal arsenal for discomfort management and anesthesia. While trademark name like Sublimaze are popular, generic variations from Hameln and Martindale supply the backbone of hospital supplies, ensuring economical and reputable access to this life-saving medication. Due to its extreme effectiveness and potential for breathing anxiety, its usage is strictly restricted to clinical environments where resuscitation devices and experienced workers are right away offered.
Frequently Asked Questions (FAQ)
Q: Is Fentanyl Citrate injection available on a basic GP prescription?A: Generally, no. While fentanyl is offered in patch (transdermal) or lozenge type for community use, the injection type is almost specifically utilized in healthcare facility settings under specialist supervision.
Q: How is a Fentanyl overdose dealt with in a UK medical facility?A: The primary treatment is the administration of Naloxone, an opioid villain, in addition to helpful steps such as oxygen treatment and mechanical ventilation.
Q: Why is fentanyl preferred over morphine in some surgical cases?A: Fentanyl is chosen when a rapid beginning is required, or if the patient is hemodynamically unsteady, as it triggers less histamine release and less variations in blood pressure compared to morphine.
Q: Can Fentanyl be utilized for kids in the UK?A: Yes, it is certified for paediatric use in the UK as an analgesic supplement in anesthesia and for sedation, with dosages thoroughly determined based upon the kid's weight and age.
Q: What happens if a dosage of Fentanyl is wasted?A: In the UK, any "waste" (for instance, if just half an ampoule is utilized) need to be experienced and signed for by 2 healthcare experts in the Controlled Drugs Register to guarantee the drug was ruined and not diverted.
