Fentanyl Citrate Injection: A Comprehensive Guide to Brands and Clinical Use in the UK
Fentanyl citrate is a potent artificial opioid analgesic that has remained a cornerstone of anesthesia and extensive care medicine given that 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 regulated as a Schedule 2 Controlled Drug (CD). Primarily utilized for its quick beginning and brief duration of action, fentanyl citrate injection is a necessary tool for clinicians handling sharp pain, surgical analgesia, and sedation.
This article provides an in-depth exploration of the fentanyl citrate injection brand names readily available in the UK, their clinical indications, regulatory framework, and safety profiles.
Understanding Fentanyl Citrate
Fentanyl citrate is roughly 50 to 100 times more powerful than morphine. Its high lipid solubility enables it to cross the blood-brain barrier rapidly, supplying almost immediate analgesic effects when administered intravenously. In the UK healthcare system, it is primarily made use of in health center settings-- specifically in running theatres, emergency situation departments, and Intensive Care Units (ICUs).
Scientific Indications
The scientific applications of fentanyl citrate injection in the UK are broad but specific to controlled environments:
- Analgesic Supplement: Used throughout personnel procedures to provide profound analgesia.
- Induction of Anesthesia: Often used along with induction agents to blunt the cardiovascular action to intubation.
- Post-operative Pain Management: Administered in healing rooms for immediate relief of severe pain.
- Sedation: Used in ICUs for patients needing mechanical ventilation.
Fentanyl Citrate Injection Brands in the UK
In the United Kingdom, while the original brand name developed by Janssen-Cilag was Sublimaze, the marketplace is now dominated by premium generic variations manufactured by numerous pharmaceutical business. These items need to be authorized by the Medicines and Healthcare products Regulatory Agency (MHRA) to ensure they fulfill rigid security and efficacy standards.
Leading Manufacturers and Suppliers
The UK supply chain for fentanyl citrate injection relies on numerous key players:
- Hameln Pharma: One of the most common providers in NHS health centers. They supply fentanyl in different sizes of ampoules.
- Martindale Pharma (Ethypharm): A major UK-based producer concentrating on critical care and sterile injectables.
- Mawdsleys Specialty Services: Often associated with the circulation and supply of specialized solutions.
- Wockhardt UK: Provides generic options for health center usage.
Summary of Available Presentations
The following table details the typical brand names and presentations of fentanyl citrate injection currently made use of within the UK healthcare facilities.
| 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 main nerve system (CNS). By binding to these receptors, it prevents rising pain pathways, changes the understanding of and reaction to pain, and produces generalized CNS anxiety.
Key Pharmacokinetic Properties:
- Onset of Action: 1-- 2 minutes (Intravenous).
- Peak Effect: 3-- 5 minutes.
- Duration: 30-- 60 minutes (much shorter than morphine due to redistribution into fat and muscle).
- Metabolic process: Hepatic through the CYP3A4 enzyme system.
- Excretion: Primarily kidney.
Regulatory and Safety Requirements in the UK
Since fentanyl citrate is a Schedule 2 Controlled Drug, its handling in the UK goes through the Misuse of Drugs Regulations 2001. These policies mandate rigorous procedures to prevent diversion and make sure patient safety.
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, received, or disposed of must be tape-recorded in a Controlled Drugs Register (CDR).
- Prescribing: All prescriptions need to meet specific legal requirements, including the overall amount composed in both words and figures.
- Damage: Expired or polluted vials should be "rendered irretrievable" in the presence of an authorized witness.
Common Side Effects and Adverse Reactions
While extremely reliable, fentanyl citrate brings a danger of significant adverse effects, particularly if not titrated carefully.
Respiratory System:The most vital side result is breathing depression. This is dose-dependent and can cause apnea if the client is not kept an eye on or aerated.
Cardiovascular System:Fentanyl can trigger bradycardia (slow heart rate) and hypotension, though it is normally thought about more cardiovascularly stable than morphine.
Musculoskeletal System:A distinct adverse effects of fast, 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 bliss.
- Pruritus (itching).
- Biliary system spasm.
Administration Guidelines
In the UK, fentanyl citrate injections are usually administered by anesthesiologists, specially trained nurses, or emergency situation medicine clinicians.
- Intravenous (IV) Bolus: Used for rapid pain relief or induction of anesthesia.
- Constant Infusion: Common in the ICU for long-lasting sedation. Concentrations are frequently standardized by local healthcare facility trusts (e.g., 1mg in 50ml or 2.5 mg in 50ml).
- Patient-Controlled Analgesia (PCA): Less common than morphine PCAs, however made use of for patients with morphine allergic reactions or renal disability.
Comparison of Fentanyl vs. Other Injectable Opioids
| Function | Fentanyl | Morphine | Remifentanil |
|---|---|---|---|
| Effectiveness (Approx) | 100x Morphine | 1x (Baseline) | 100x Morphine |
| Onset | Extremely Rapid (1-2 min) | Moderate (15-30 min) | Immediate (30-60 sec) |
| Duration | Short (30-60 min) | Long (4 hours) | Ultra-short (3-10 min) |
| Histamine Release | Very Low | High | Low |
| UK Legal Status | Set up 2 CD | Set up 2 CD | Schedule 2 CD |
Fentanyl citrate injection remains an indispensable element of the UK's medicinal toolbox for discomfort management and anesthesia. While brand name names like Sublimaze are well-known, generic variations from Hameln and Martindale provide the foundation of healthcare facility supplies, ensuring cost-effective and dependable access to this life-saving medication. click here to its severe potency and potential for breathing anxiety, its usage is strictly confined to clinical environments where resuscitation devices and qualified workers are immediately readily available.
Regularly Asked Questions (FAQ)
Q: Is Fentanyl Citrate injection readily available on a standard GP prescription?A: Generally, no. While fentanyl is readily available in patch (transdermal) or lozenge kind for community use, the injection type is practically specifically utilized in hospital settings under professional supervision.
Q: How is a Fentanyl overdose dealt with in a UK hospital?A: The primary treatment is the administration of Naloxone, an opioid antagonist, along with supportive procedures such as oxygen therapy and mechanical ventilation.
Q: Why is fentanyl preferred over morphine in some surgical cases?A: Fentanyl is preferred when a rapid onset is needed, or if the patient is hemodynamically unstable, as it triggers less histamine release and fewer fluctuations in blood pressure compared to morphine.
Q: Can Fentanyl be utilized for children in the UK?A: Yes, it is accredited for paediatric use in the UK as an analgesic supplement in anesthesia and for sedation, with does carefully calculated based upon the kid's weight and age.
Q: What takes place if a dosage of Fentanyl is squandered?A: In the UK, any "wastage" (for example, if only half an ampoule is used) need to be witnessed and signed for by 2 health care professionals in the Controlled Drugs Register to ensure the drug was ruined and not diverted.
