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Fentanyl Citrate Injection: A Comprehensive Guide to Brands and Clinical Use in the UK

Fentanyl citrate is a potent synthetic opioid analgesic that has remained a cornerstone of anesthesia and intensive care medicine because its advancement in the 1960s. In the United Kingdom, it is categorized 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 onset and short period of action, fentanyl citrate injection is a vital tool for clinicians managing intense pain, surgical analgesia, and sedation.

This article offers a thorough exploration of the fentanyl citrate injection brands offered in the UK, their scientific indications, regulatory 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 quickly, supplying practically immediate analgesic results when administered intravenously. In the UK health care system, it is mostly made use of in hospital settings– specifically in running theatres, emergency departments, and Intensive Care Units (ICUs).

Clinical Indications

The scientific applications of fentanyl citrate injection in the UK are broad however particular to regulated environments:

• Analgesic Supplement: Used during personnel procedures to offer profound analgesia.
• Induction of Anesthesia: Often utilized alongside induction agents to blunt the cardiovascular action to intubation.
• Post-operative Pain Management: Administered in healing rooms for immediate relief of severe discomfort.
• Sedation: Used in ICUs for clients requiring mechanical ventilation.

Fentanyl Citrate Injection Brands in the UK

In the United Kingdom, while the initial brand developed by Janssen-Cilag was Sublimaze, the marketplace is now dominated by top quality generic versions made by numerous pharmaceutical business. These items must be authorized by the Medicines and Healthcare items Regulatory Agency (MHRA) to guarantee they satisfy strict security and efficacy standards.

Leading Manufacturers and Suppliers

The UK supply chain for fentanyl citrate injection counts on numerous essential gamers:

1. Hameln Pharma: One of the most typical providers in NHS hospitals. They provide fentanyl in various sizes of ampoules.
2. Martindale Pharma (Ethypharm): A major UK-based manufacturer specializing in critical care and sterile injectables.
3. Mawdsleys Specialty Services: Often included in the distribution and supply of specialized formulas.
4. Wockhardt UK: Provides generic options for healthcare facility usage.

Summary of Available Presentations

The following table details the common brands and discussions of fentanyl citrate injection presently made use of within the UK health care facilities.

Brand/Manufacturer
Common Concentration
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 mostly as an agonist at the mu-opioid receptors in the central nerve system (CNS). By binding to these receptors, it hinders rising discomfort pathways, changes the perception of and response to pain, and produces generalized CNS anxiety.

Key Pharmacokinetic Properties:

• Onset of Action: 1– 2 minutes (Intravenous).
• Peak Effect: 3– 5 minutes.
• Period: 30– 60 minutes (shorter than morphine due to redistribution into fat and muscle).
• Metabolism: Hepatic through the CYP3A4 enzyme system.
• Excretion: Primarily renal.

Regulatory and Safety Requirements in the UK

Because fentanyl citrate is a Schedule 2 Controlled Drug, its handling in the UK is subject to the Misuse of Drugs Regulations 2001. These guidelines mandate stringent protocols to prevent diversion and guarantee client security.

Legal Requirements for Healthcare Facilities:

• Storage: Must be kept in a locked, double-bolted cupboard (CD cabinet) that fulfills British Standards.
• Record Keeping: Every dosage administered, gotten, or discarded must be recorded in a Controlled Drugs Register (CDR).
• Prescribing: All prescriptions should fulfill particular legal requirements, consisting of the total amount composed in both words and figures.
• Destruction: Expired or contaminated vials should be “rendered irretrievable” in the existence of an authorized witness.

Common Side Effects and Adverse Reactions

While highly efficient, fentanyl citrate brings a threat of considerable adverse effects, especially if not titrated thoroughly.

Breathing System:The most important negative effects is respiratory anxiety. This is dose-dependent and can lead to apnea if the patient is not monitored or ventilated.

Cardiovascular System:Fentanyl can cause bradycardia (sluggish heart rate) and hypotension, though it is generally thought about more cardiovascularly steady than morphine.

Musculoskeletal System:An unique side result of rapid, high-dose fentanyl administration is “wood chest syndrome” (skeletal muscle rigidness), which can make mechanical ventilation tough.

Other Common Side Effects:

• Nausea and throwing up.
• Dizziness or bliss.
• Pruritus (itching).
• Biliary tract convulsion.

Administration Guidelines

In the UK, fentanyl citrate injections are generally administered by anesthesiologists, specially trained nurses, or emergency medication clinicians.

1. Intravenous (IV) Bolus: Used for rapid pain relief or induction of anesthesia.
2. Constant Infusion: Common in the ICU for long-lasting sedation. Concentrations are frequently standardized by local medical facility trusts (e.g., 1mg in 50ml or 2.5 mg in 50ml).
3. Patient-Controlled Analgesia (PCA): Less common than morphine PCAs, but utilized for clients with morphine allergies or renal problems.

Comparison of Fentanyl vs. Other Injectable Opioids

Feature
Fentanyl
Morphine
Remifentanil

Potency (Approx)
100x Morphine
1x (Baseline)
100x Morphine

Onset
Extremely Rapid (1-2 min)
Moderate (15-30 minutes)
Immediate (30-60 sec)

Duration
Short (30-60 min)
Long (4 hours)
Ultra-short (3-10 minutes)

Histamine Release
Really Low
High
Low

UK Legal Status
Schedule 2 CD
Schedule 2 CD
Set up 2 CD

Fentanyl citrate injection remains an indispensable element of the UK’s medicinal toolbox for discomfort management and anesthesia. While learn more like Sublimaze are widely known, generic versions from Hameln and Martindale offer the foundation of health center supplies, guaranteeing affordable and dependable access to this life-saving medication. Due to its extreme potency and potential for respiratory anxiety, its use is strictly restricted to clinical environments where resuscitation equipment and qualified personnel are immediately readily available.

Frequently Asked Questions (FAQ)

Q: Is Fentanyl Citrate injection readily available on a basic GP prescription?A: Generally, no. While fentanyl is offered in patch (transdermal) or lozenge form for neighborhood use, the injection kind is practically specifically utilized in hospital settings under specialist supervision.

Q: How is a Fentanyl overdose treated in a UK healthcare facility?A: The main treatment is the administration of Naloxone, an opioid antagonist, in addition to supportive procedures such as oxygen therapy and mechanical ventilation.

Q: Why is fentanyl preferred over morphine in some surgical cases?A: Fentanyl is chosen when a quick beginning is required, or if the client is hemodynamically unsteady, as it triggers less histamine release and fewer changes in high blood pressure compared to morphine.

Q: Can Fentanyl be used for kids in the UK?A: Yes, it is licensed for paediatric use in the UK as an analgesic supplement in anesthesia and for sedation, with dosages thoroughly determined based upon the child’s weight and age.

Q: What occurs if a dosage of Fentanyl is lost?A: In the UK, any “waste” (for example, if just half an ampoule is utilized) should be seen and signed for by 2 healthcare specialists in the Controlled Drugs Register to ensure the drug was damaged and not diverted.