Understanding Fentanyl Citrate Injection: Brand Names and Clinical Use in the UK
In the landscape of modern discomfort management and anesthesia, few medications are as powerful or as medically considerable as fentanyl citrate. As an artificial opioid analgesic, it plays an important function in surgical settings and acute discomfort management throughout the United Kingdom. Provided its high strength-- estimated to be between 50 and 100 times more powerful than morphine-- understanding its available types, brand, and regulatory status is necessary for healthcare professionals and notified patients alike.
This article supplies a detailed overview of fentanyl citrate injection within the UK healthcare system, detailing the brand name names readily available, its therapeutic signs, and the stringent safety procedures governing its use.
What is Fentanyl Citrate Injection?
Fentanyl citrate is a rapid-acting, short-duration opioid agonist that interacts mostly with the μ-opioid receptors in the central nerve system. When administered via injection (either intravenously or intramuscularly), it offers extensive analgesia and sedation.
Unlike numerous naturally derived opiates, fentanyl is extremely lipophilic (fat-soluble), which permits it to cross the blood-brain barrier quickly. This leads to a rapid beginning of action-- typically within one to two minutes when administered intravenously-- making it a perfect choice for intense surgical treatments and emergency situation interventions.
The Significance of the "Citrate" Form
The "citrate" suffix describes the salt form of the drug. Fentanyl in its base type is not easily soluble in water. By reacting it with citric acid to form fentanyl citrate, pharmaceutical producers create a steady, water-soluble option ideal for parenteral (injectable) administration.
Brand and Manufacturers in the UK
In the United Kingdom, fentanyl citrate injection is offered both as an exclusive brand name and as generic formulations. While the drug itself stays the same, the branding often depends on the particular pharmaceutical business providing the NHS (National Health Service) or personal hospitals.
1. Sublimaze
Sublimaze is maybe the most traditionally recognized brand name for fentanyl citrate injection. Originally established by Janssen Pharmaceutica, it became the gold requirement for injectable fentanyl in medical settings. While the name "Sublimaze" is still extensively cited in medical literature, numerous UK hospitals now mostly stock generic versions due to cost-effectiveness.
2. Generic Fentanyl Citrate
Most of fentanyl used in the UK is identified generically as "Fentanyl Citrate 50 micrograms/ml solution for injection." read more are licensed to distribute these generic versions in the UK.
Table 1: Common Suppliers and Brand Names in the UK
| Manufacturer/ Brand Name | Kind | Common 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 |
Clinical Indications for Injection
Fentanyl citrate injection is not a standard ward medication for moderate discomfort; its use is strictly booked for particular scientific environments, such as operating theatres, extensive care systems (ICU), and emergency situation departments.
1. Anesthesia and Surgical Support
- Pre-medication: Given quickly before surgical treatment to cause sedation and eliminate stress and anxiety.
- Analgesic Adjunct: Used together with volatile looks (gases) or other intravenous agents to keep a "well balanced anesthesia" state.
- Induction: Often utilized as part of the rapid series induction to blunt the cardiovascular response to intubation.
2. Post-Operative Pain Management
For patients recuperating from significant surgical treatment, small, titrated dosages of fentanyl injection may be utilized in the healing room (PACU) to handle acute "advancement" discomfort that has actually not responded to other medications.
3. Intensive Care Sedation
In the ICU, fentanyl is frequently administered through continuous infusion to offer analgesia for patients who are mechanically ventilated. Its brief half-life permits clinicians to perform "sedation breaks" to assess the client's neurological status better than with longer-acting opioids.
4. Palliative Care
In specific terminal care settings, fentanyl injections might be used to handle extreme discomfort crises, although other paths (such as subcutaneous patches or sublingual tablets) are more common for persistent upkeep.
Dose and Administration Guidelines
The administration of fentanyl citrate injection need to only be performed by skilled health care specialists (typically anesthetists or specialized nurses) who have access to resuscitative devices.
Basic Strengths
The standard concentration in the UK is 50 micrograms per milliliter (50mcg/ml). It is available in numerous ampoule sizes, typically 2ml (containing 100mcg) and 10ml (including 500mcg).
Paths of Administration
- Intravenous (IV): The most common path for an immediate effect.
- Intramuscular (IM): Used when IV gain access to is not offered, though the start is slower.
- Epidural/Intrathecal: Fentanyl is often injected into the spine area to offer local anesthesia, often combined with an anesthetic like bupivacaine.
Security, Contraindications, and Side Effects
Due to its severe effectiveness, fentanyl citrate brings a considerable danger profile. The primary issue is breathing depression, where the patient's drive to breathe is decreased.
Typical Side Effects
- Nausea and vomiting.
- Dizziness and drowsiness.
- Bradycardia (slow heart rate).
- Hypotension (low blood pressure).
- Urinary retention.
Major Risks
- Chest Wall Rigidity: Rapid IV infusion of high-dose fentanyl can trigger "Stiff Person Syndrome" or "Woody Chest," where the skeletal muscles of the chest and abdomen become stiff, making ventilation difficult without the usage of muscle relaxants.
- Addiction and Misuse: Like all opioids, fentanyl has a high capacity for dependence.
- Cross-Reactivity: It needs to be used 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 classified under the Misuse of Drugs Act 1971 as a Class A drug. Furthermore, 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 need to fulfill specific legal requirements concerning the overall quantity and solution.
- Destruction: Any unused portions of an ampoule must be seen and ruined according to hospital procedures.
FAQ: Fentanyl Citrate Injection in the UK
Q1: Is Sublimaze the very same as Fentanyl?
Yes. Sublimaze is merely the brand for the generic drug fentanyl citrate. In a lot of UK scientific settings, the terms are used interchangeably, though the generic name is preferred in modern-day prescribing to prevent mistakes.
Q2: How fast does an injection of fentanyl work?
When offered intravenously, its effects can be felt practically immediately, peaking within 3 to 5 minutes. Its analgesic period is reasonably short, usually lasting 30 to 60 minutes.
Q3: Can fentanyl injection be utilized in the house?
No. Fentanyl citrate injection is strictly an "in-hospital" medication. For home use (e.g., in palliative care), fentanyl is normally prescribed as transdermal patches (e.g., Duragesic or Matrifen) or as lozenges/nasal sprays for breakthrough discomfort.
Q4: What takes place if a client is provided too much fentanyl?
An overdose leads to serious breathing anxiety, identify pupils, and loss of consciousness. The standard "remedy" utilized in the UK is Naloxone, a competitive opioid villain that reverses the results of fentanyl.
Q5: Is fentanyl citrate injection more powerful than morphine?
Yes, considerably. Fentanyl is approximately 80 to 100 times more potent than morphine by weight. This suggests 100 micrograms (0.1 mg) of fentanyl is roughly equivalent to 10mg of morphine.
Fentanyl citrate stays a foundation of the UK's acute healthcare system. Whether branded as Sublimaze or offered as a generic formulation from business like Accord or Hameln, its role in making it possible for intricate surgical treatments and managing extreme discomfort is vital. However, its effectiveness necessitates a high level of alertness, strict legal controls, and professional administration. By understanding the brand names and the pharmacological profile of this effective opioid, doctor can ensure it is used securely and effectively to improve patient outcomes.
Disclaimer: This article is for informative functions only and does not constitute medical advice. For clinical guidance, please refer to the British National Formulary (BNF) or seek advice from a qualified doctor.
