Understanding Fentanyl Citrate Injection: Brand Names and Clinical Use in the UK
In the landscape of contemporary discomfort management and anesthesia, few medications are as potent or as medically significant as fentanyl citrate. As an artificial opioid analgesic, it plays a crucial role in surgical settings and intense discomfort management throughout the United Kingdom. Given its high potency-- estimated to be between 50 and 100 times more effective than morphine-- understanding its available kinds, brand, and regulative status is important for healthcare specialists and informed clients alike.
This short article supplies an extensive summary of fentanyl citrate injection within the UK health care system, detailing the trademark name available, its healing indications, and the rigorous security protocols governing its use.
What is Fentanyl Citrate Injection?
Fentanyl citrate is a rapid-acting, short-duration opioid agonist that engages mainly with the μ-opioid receptors in the main worried system. When administered via injection (either intravenously or intramuscularly), it offers profound analgesia and sedation.
Unlike numerous naturally obtained opiates, fentanyl is highly lipophilic (fat-soluble), which enables it to cross the blood-brain barrier rapidly. This leads to a fast start of action-- often within one to 2 minutes when administered intravenously-- making it an ideal option for acute surgical treatments and emergency interventions.
The Significance of the "Citrate" Form
The "citrate" suffix describes the salt form of the drug. Fentanyl in its base kind is not easily soluble in water. By reacting it with citric acid to form fentanyl citrate, pharmaceutical producers produce a stable, water-soluble solution suitable for parenteral (injectable) administration.
Brand and Manufacturers in the UK
In the United Kingdom, fentanyl citrate injection is available both as a proprietary brand and as generic formulas. While the drug itself remains the same, the branding frequently depends upon the particular pharmaceutical business supplying the NHS (National Health Service) or private medical facilities.
1. Sublimaze
Sublimaze is maybe the most traditionally recognized trademark name for fentanyl citrate injection. Originally developed by Janssen Pharmaceutica, it became the gold requirement for injectable fentanyl in clinical settings. While the name "Sublimaze" is still commonly cited in medical literature, many UK healthcare facilities now primarily stock generic versions due to cost-effectiveness.
2. Generic Fentanyl Citrate
Most of fentanyl used in the UK is labeled generically as "Fentanyl Citrate 50 micrograms/ml solution for injection." A number of essential pharmaceutical companies are certified to disperse these generic versions in the UK.
Table 1: Common Suppliers and Brand Names in the UK
| Manufacturer/ Brand Name | Form | Typical Strengths | Common Pack Sizes |
|---|---|---|---|
| Sublimaze (Janssen-Cilag) | Solution for Injection | 50 mcg/ml | 2ml, 10ml ampoules |
| Accord Healthcare | Fentanyl Citrate (Generic) | 50 mcg/ml | 2ml, 10ml ampoules |
| Hameln Pharmaceuticals | Fentanyl Citrate (Generic) | 50 mcg/ml | 2ml, 10ml, 20ml ampoules |
| Pfizer (Hospira) | Fentanyl Citrate (Generic) | 50 mcg/ml | 2ml, 10ml ampoules |
| Wockhardt UK | Fentanyl Citrate (Generic) | 50 mcg/ml | 2ml, 10ml ampoules |
Scientific Indications for Injection
Fentanyl citrate injection is not a standard ward medication for moderate pain; its use is strictly reserved for particular clinical environments, such as operating theatres, intensive care systems (ICU), and emergency departments.
1. Anesthesia and Surgical Support
- Pre-medication: Given soon before surgical treatment to induce sedation and ease stress and anxiety.
- Analgesic Adjunct: Used alongside unstable visual appeals (gases) or other intravenous representatives to preserve a "well balanced anesthesia" state.
- Induction: Often used as part of the rapid series induction to blunt the cardiovascular reaction to intubation.
2. Post-Operative Pain Management
For clients recovering from major surgery, little, titrated doses of fentanyl injection may be used in the healing room (PACU) to handle intense "advancement" discomfort that has actually not reacted to other medications.
3. Intensive Care Sedation
In the ICU, fentanyl is frequently administered by means of constant infusion to provide analgesia for patients who are mechanically aerated. website -life permits clinicians to perform "sedation breaks" to evaluate the client's neurological status better than with longer-acting opioids.
4. Palliative Care
In specific terminal care settings, fentanyl injections may be utilized to manage severe discomfort crises, although other routes (such as subcutaneous patches or sublingual tablets) are more typical for persistent upkeep.
Dosage and Administration Guidelines
The administration of fentanyl citrate injection should only be performed by experienced health care experts (generally anesthetists or specialized nurses) who have access to resuscitative equipment.
Standard Strengths
The standard concentration in the UK is 50 micrograms per milliliter (50mcg/ml). It is readily available in various ampoule sizes, usually 2ml (including 100mcg) and 10ml (consisting of 500mcg).
Routes of Administration
- Intravenous (IV): The most common path for an instant result.
- Intramuscular (IM): Used when IV access is not available, though the onset is slower.
- Epidural/Intrathecal: Fentanyl is sometimes injected into the back space to provide regional anesthesia, often combined with a local anesthetic like bupivacaine.
Safety, Contraindications, and Side Effects
Due to its extreme potency, fentanyl citrate brings a significant threat profile. The primary concern is breathing anxiety, where the patient's drive to breathe is diminished.
Common Side Effects
- Queasiness and throwing up.
- Dizziness and sleepiness.
- Bradycardia (sluggish heart rate).
- Hypotension (low blood pressure).
- Urinary retention.
Severe Risks
- Chest Wall Rigidity: Rapid IV infusion of high-dose fentanyl can cause "Stiff Person Syndrome" or "Woody Chest," where the skeletal muscles of the chest and abdominal area end up being rigid, making ventilation difficult without making use of muscle relaxants.
- Addiction and Misuse: Like all opioids, fentanyl has a high capacity for dependence.
- Cross-Reactivity: It should be utilized with extreme care in clients who have actually taken Monoamine Oxidase Inhibitors (MAOIs) within the previous 14 days, as this can activate a hypertensive crisis or serotonin syndrome.
Legal Status and Controls in the UK
In the United Kingdom, fentanyl is categorized under the Misuse of Drugs Act 1971 as a Class A drug. In addition, under the Misuse of Drugs Regulations 2001, it is categorized as a Schedule 2 Controlled Drug.
This classification enforces stringent requirements on:
- Storage: Must be kept in a double-locked "CD" (Controlled Drug) cabinet.
- Record Keeping: Every milligram needs to be accounted for in a Controlled Drugs Register.
- Prescribing: Prescriptions must fulfill specific legal requirements relating to the overall quantity and solution.
- Damage: Any unused parts of an ampoule must be witnessed and destroyed according to health center procedures.
FREQUENTLY ASKED QUESTION: Fentanyl Citrate Injection in the UK
Q1: Is Sublimaze the exact same as Fentanyl?
Yes. Sublimaze is simply the trademark name for the generic drug fentanyl citrate. In many UK scientific settings, the terms are utilized interchangeably, though the generic name is preferred in modern prescribing to prevent mistakes.
Q2: How quick does an injection of fentanyl work?
When provided intravenously, its impacts can be felt almost immediately, peaking within 3 to 5 minutes. Its analgesic duration is reasonably short, generally lasting 30 to 60 minutes.
Q3: Can fentanyl injection be used in the house?
No. Fentanyl citrate injection is strictly an "in-hospital" medication. For home usage (e.g., in palliative care), fentanyl is typically recommended as transdermal patches (e.g., Duragesic or Matrifen) or as lozenges/nasal sprays for advancement discomfort.
Q4: What happens if a client is provided too much fentanyl?
An overdose causes serious respiratory anxiety, pinpoint pupils, and loss of consciousness. The standard "antidote" used in the UK is Naloxone, a competitive opioid villain that reverses the impacts of fentanyl.
Q5: Is fentanyl citrate injection stronger than morphine?
Yes, significantly. Fentanyl is roughly 80 to 100 times more powerful than morphine by weight. This indicates 100 micrograms (0.1 mg) of fentanyl is approximately equivalent to 10mg of morphine.
Fentanyl citrate remains a foundation of the UK's acute medical care system. Whether branded as Sublimaze or offered as a generic solution from business like Accord or Hameln, its function in making it possible for complex surgeries and managing serious pain is important. However, its potency requires a high level of vigilance, strict legal controls, and specialist administration. By understanding the brand names and the medicinal profile of this powerful opioid, doctor can guarantee it is used securely and successfully to improve patient results.
Disclaimer: This article is for educational purposes just and does not constitute medical recommendations. For clinical guidance, please refer to the British National Formulary (BNF) or speak with a competent medical professional.
