Fentanyl Citrate Injection in the UK: A Guide to Brand Names, Uses, and Clinical Overview
Fentanyl citrate is a powerful artificial opioid analgesic, commonly recognized in medical medicine for its quick onset and short period of action. Within learn more United Kingdom's healthcare system, fentanyl plays a critical function in perioperative care, extensive care, and the management of acute, severe pain. Due to the fact that of its potency-- approximated to be 50 to 100 times that of morphine-- its administration by means of injection is strictly controlled and normally reserved for medical facility settings.
For healthcare specialists, students, or clients seeking to comprehend the medicinal landscape in the UK, determining the offered brand names and makers of fentanyl citrate injection is vital. This article supplies a comprehensive overview of the brand names, clinical indications, and regulatory status of fentanyl citrate injections in the United Kingdom.
What is Fentanyl Citrate?
Fentanyl citrate is a phenylpiperidine derivative that functions as a potent agonist at the μ-opioid (mu-opioid) receptors in the central nerve system. When administered through intravenous (IV) or intramuscular (IM) injection, it provides fast analgesia. In the UK, it is categorized as a Class A controlled drug under the Misuse of Drugs Act 1971 and falls under Schedule 2 of the Misuse of Drugs Regulations 2001.
Its main appeal in surgical settings is its ability to offer extreme pain relief while preserving hemodynamic stability, making it a favored choice for cardiac surgical treatments and for patients with vulnerable cardiovascular systems.
Fentanyl Citrate Injection Brand Names and Manufacturers in the UK
In the UK market, numerous pharmaceutical items are recommended by their generic name (Fentanyl) instead of a trademark name. However, several producers provide the NHS and private health centers with particular formulas. Historically, the most well-known brand associated with fentanyl citrate was Sublimaze, originally established by Janssen Pharmaceutica. While the name Sublimaze is still used internationally and colloquially in some UK theatres, most of the supply in the UK is now offered by generic manufacturing specialists.
Table 1: Common Manufacturers and Product Details in the UK
| Maker | Product Description | Common Strengths |
|---|---|---|
| Hameln Pharma | Fentanyl Citrate Injection BP | 50 micrograms/ml (2ml, 10ml ampoules) |
| Wockhardt UK | Fentanyl Citrate Injection | 50 micrograms/ml (2ml, 10ml ampoules) |
| Martindale Pharma | Fentanyl Citrate | 50 micrograms/ml (2ml, 10ml, 20ml ampoules) |
| Janssen-Cilag | Sublimaze (Historical Brand) | 50 micrograms/ml |
| Pirimal Critical Care | Fentanyl Citrate Injection | 50 micrograms/ml |
While the brand "Sublimaze" may still appear on some procurement lists, the UK medical landscape is dominated by Hameln and Martindale generic versions, which are bioequivalent to the initial branded item.
Medical Indications for Injection
Fentanyl citrate injection is utilized throughout various departments, from the Emergency Department (ED) to the Operating Theatre. Its use is generally divided into three classifications:
1. Anaesthesia
Fentanyl is a foundation of modern-day anaesthesia. It is used as an analgesic supplement during the induction and upkeep of basic anaesthesia. It assists blunt the body's physiological "tension action" to intubation and surgical cut.
2. Post-operative Recovery
In the Recovery Room (PACU), fentanyl might be administered in small, titrated boluses to handle instant post-surgical pain before transitions are made to longer-acting opioids or oral medications.
3. Intensive Care (ICU)
In the Intensive Care Unit, fentanyl is regularly utilized as an infusion to offer constant analgesia for patients who are mechanically aerated. Its brief half-life permits more predictable "wake-up" tests compared to drugs like morphine.
Table 2: Clinical Application Summary
| Application | Role of Fentanyl |
|---|---|
| Pre-medication | To offer sedation and analgesia before transferring to theatre. |
| Induction | To cooperate with induction agents (like Propofol) for a smooth shift to unconsciousness. |
| Upkeep | To handle the surgical pain stimulus throughout the treatment. |
| Analgesic Supplement | Utilized in local anaesthesia (like epidurals) to enhance discomfort relief. |
System of Action and Pharmacokinetics
Fentanyl works by binding to mu-opioid receptors. This binding hinders ascending discomfort paths, modifying the perception of and reaction to pain. It also increases the pain threshold.
- Onset of Action: 1-- 2 minutes (Intravenous).
- Peak Effect: 3-- 5 minutes.
- Period: 30-- 60 minutes (making it extremely titratable).
- Metabolic process: Primarily in the liver by means of the CYP3A4 enzyme.
- Excretion: Mostly via the kidneys.
Since fentanyl is highly lipid-soluble, it crosses the blood-brain barrier practically immediately, which discusses why the analgesic effect is felt so much faster than with morphine or oxycodone.
Safety and Side Effects
Similar to all potent opioids, fentanyl citrate brings a risk of significant negative effects, especially relating to the respiratory and cardiovascular systems.
Common Side Effects:
- Respiratory Depression: The most major risk; it lowers the drive to breathe.
- Bradycardia: A sluggish heart rate.
- Hypotension: Low high blood pressure.
- Muscle Rigidity: Specifically "wooden chest syndrome," where the chest wall becomes too stiff to ventilate easily (normally takes place with high-dose fast IV administration).
- Nausea and Vomiting: Common in the post-operative phase.
- Pruritus: Itching, typically around the nose or upper body.
Contraindications and Cautions:
- Known hypersensitivity to fentanyl or other opioid agonists.
- Respiratory depression in the lack of resuscitative equipment.
- Concurrent usage of Monoamine Oxidase Inhibitors (MAOIs) within the last 14 days (danger of serotonin syndrome).
- Myasthenia gravis (due to muscle-relaxing interactions).
Guideline and Storage in the UK
In the United Kingdom, fentanyl citrate is strictly managed to avoid diversion and abuse.
- Storage: It must be kept in a locked "Controlled Drugs" (CD) cabinet that fulfills the British Standard for security.
- Record Keeping: Every dosage administered need to be taped in a Controlled Drugs Register, signed by two certified healthcare professionals (generally a doctor and a nurse, or 2 nurses).
- Disposal: Any lost or unused portion of an ampoule must be seen and damaged according to regional trust policy (generally utilizing a denaturing package).
FAQ: Fentanyl Citrate Injection in the UK
1. Is Sublimaze still offered in the UK?
While the brand Sublimaze is the "innovator" product, many UK hospitals presently utilize generic versions produced by companies like Hameln or Martindale. These are pharmacologically identical.
2. What is the standard concentration of Fentanyl injection in the UK?
The basic concentration is 50 micrograms per millilitre (50 mcg/ml). It is generally available in 2ml (100mcg) and 10ml (500mcg) ampoules.
3. Can Fentanyl injection be provided at home?
No. Fentanyl citrate injection is almost solely used in healthcare facility settings (theatre, ICU, A&E) because of the danger of quick respiratory anxiety, which needs instant access to oxygen and resuscitation equipment.
4. How does Fentanyl compare to Morphine in strength?
Fentanyl is roughly 50 to 100 times more potent than morphine. This indicates 100 micrograms of fentanyl is approximately comparable to 10 milligrams of morphine.
5. What is the antidote for a Fentanyl overdose?
Naloxone (brand Prenoxad or generic) is the basic opioid antagonist utilized to reverse the impacts of fentanyl if breathing anxiety occurs.
Summary
Fentanyl citrate remains one of the most vital medications in the UK's surgical and intensive care environments. While it may be referred to by the historic brand Sublimaze, it is mostly utilized in its generic type supplied by manufacturers such as Hameln, Wockhardt, and Martindale Pharma.
Its high strength and rapid onset make it an unparalleled tool for handling sharp pain and assisting in anaesthesia, but these same qualities require the highest level of scientific monitoring and regulative oversight. Comprehending the brand names and the pharmacological profile of this drug is important for safe practice and client security within the NHS and the larger UK health care sector.
Disclaimer: This short article is for informative functions only and does not make up medical recommendations. Health care professionals need to always describe the British National Formulary (BNF) or their regional Trust standards for dosing and administration procedures.
