Understanding Fentanyl Citrate Injection: Brand Names and Clinical Use in the UK
In the landscape of modern-day discomfort management and anesthesia, couple of medications are as potent or as scientifically considerable as fentanyl citrate. As a synthetic opioid analgesic, it plays a vital function in surgical settings and intense pain management throughout the United Kingdom. Given its high potency-- approximated to be between 50 and 100 times more effective than morphine-- comprehending its available types, brand names, and regulatory status is important for health care specialists and informed patients alike.
This article supplies a detailed summary of fentanyl citrate injection within the UK healthcare system, detailing the trademark name available, its therapeutic indications, and the rigorous safety protocols governing its use.
What is Fentanyl Citrate Injection?
Fentanyl citrate is a rapid-acting, short-duration opioid agonist that interacts mainly with the μ-opioid receptors in the main nerve system. When administered through injection (either intravenously or intramuscularly), it supplies profound analgesia and sedation.
Unlike lots of naturally derived opiates, fentanyl is extremely lipophilic (fat-soluble), which allows it to cross the blood-brain barrier quickly. This results in a rapid start of action-- typically within one to 2 minutes when administered intravenously-- making it an ideal option for intense surgeries and emergency situation interventions.
The Significance of the "Citrate" Form
The "citrate" suffix refers to the salt form of the drug. Fentanyl in its base form is not easily soluble in water. By reacting it with citric acid to form fentanyl citrate, pharmaceutical makers create a stable, water-soluble option appropriate for parenteral (injectable) administration.
Trademark Name 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 remains the same, the branding frequently depends upon the particular pharmaceutical business supplying the NHS (National Health Service) or personal medical facilities.
1. Sublimaze
Sublimaze is possibly the most traditionally acknowledged trademark name for fentanyl citrate injection. Initially established by read more , it ended up being the gold requirement for injectable fentanyl in scientific settings. While the name "Sublimaze" is still commonly pointed out in medical literature, numerous UK hospitals now primarily stock generic variations due to cost-effectiveness.
2. Generic Fentanyl Citrate
Most of fentanyl utilized in the UK is identified generically as "Fentanyl Citrate 50 micrograms/ml service for injection." Several key pharmaceutical business are accredited to disperse these generic versions in the UK.
Table 1: Common Suppliers and Brand Names in the UK
| Producer/ Brand Name | Type | Typical Strengths | Typical 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 basic ward medication for moderate pain; its use is strictly scheduled for particular medical environments, such as running theatres, extensive care systems (ICU), and emergency departments.
1. Anesthesia and Surgical Support
- Pre-medication: Given soon before surgery to cause sedation and alleviate stress and anxiety.
- Analgesic Adjunct: Used together with unstable aesthetic appeals (gases) or other intravenous agents to preserve 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 clients recuperating from significant surgical treatment, small, titrated dosages of fentanyl injection might be utilized in the healing room (PACU) to handle severe "breakthrough" pain that has not reacted to other medications.
3. Intensive Care Sedation
In the ICU, fentanyl is often administered through continuous infusion to offer analgesia for patients who are mechanically ventilated. Its brief half-life permits clinicians to carry out "sedation breaks" to assess the patient's neurological status more efficiently than with longer-acting opioids.
4. Palliative Care
In specific terminal care settings, fentanyl injections may be used to manage extreme discomfort crises, although other routes (such as subcutaneous spots or sublingual tablets) are more typical for persistent maintenance.
Dosage and Administration Guidelines
The administration of fentanyl citrate injection need to just be performed by experienced healthcare professionals (generally anesthetists or specialized nurses) who have access to resuscitative equipment.
Standard Strengths
The basic concentration in the UK is 50 micrograms per milliliter (50mcg/ml). It is offered in different ampoule sizes, normally 2ml (containing 100mcg) and 10ml (containing 500mcg).
Paths of Administration
- Intravenous (IV): The most common route for an instant result.
- Intramuscular (IM): Used when IV access is not offered, though the beginning is slower.
- Epidural/Intrathecal: Fentanyl is in some cases injected into the back space to supply local anesthesia, frequently integrated with an anesthetic like bupivacaine.
Security, Contraindications, and Side Effects
Due to its extreme potency, fentanyl citrate brings a substantial danger profile. The primary concern is respiratory anxiety, where the patient's drive to breathe is lessened.
Common Side Effects
- Nausea and vomiting.
- Dizziness and sleepiness.
- Bradycardia (sluggish heart rate).
- Hypotension (low high blood pressure).
- Urinary retention.
Major 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 abdomen become stiff, making ventilation impossible without making use of muscle relaxants.
- Addiction and Misuse: Like all opioids, fentanyl has a high capacity for reliance.
- Cross-Reactivity: It needs to be utilized with severe care in patients who have taken Monoamine Oxidase Inhibitors (MAOIs) within the previous 14 days, as this can trigger 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. In addition, under the Misuse of Drugs Regulations 2001, it is categorized as a Schedule 2 Controlled Drug.
This classification imposes strict requirements on:
- Storage: Must be kept in a double-locked "CD" (Controlled Drug) cupboard.
- Record Keeping: Every milligram needs to be represented in a Controlled Drugs Register.
- Recommending: Prescriptions should satisfy specific legal requirements relating to the total quantity and formula.
- Destruction: Any unused portions of an ampoule need to be witnessed and damaged according to healthcare facility protocols.
FAQ: Fentanyl Citrate Injection in the UK
Q1: Is Sublimaze the like Fentanyl?
Yes. Sublimaze is just the trademark name for the generic drug fentanyl citrate. In most UK medical settings, the terms are used interchangeably, though the generic name is chosen in modern-day prescribing to avoid errors.
Q2: How quickly does an injection of fentanyl work?
When given intravenously, its impacts can be felt almost right away, peaking within 3 to 5 minutes. Its analgesic duration is fairly short, normally enduring 30 to 60 minutes.
Q3: Can fentanyl injection be used in your home?
No. Fentanyl citrate injection is strictly an "in-hospital" medication. For home usage (e.g., in palliative care), fentanyl is generally recommended as transdermal spots (e.g., Duragesic or Matrifen) or as lozenges/nasal sprays for development discomfort.
Q4: What takes place if a client is given too much fentanyl?
An overdose causes serious breathing anxiety, pinpoint students, and loss of consciousness. The standard "remedy" utilized in the UK is Naloxone, a competitive opioid villain that reverses the effects of fentanyl.
Q5: Is fentanyl citrate injection more powerful than morphine?
Yes, considerably. Fentanyl is roughly 80 to 100 times more potent than morphine by weight. This implies 100 micrograms (0.1 mg) of fentanyl is approximately comparable to 10mg of morphine.
Fentanyl citrate remains a cornerstone of the UK's intense healthcare system. Whether branded as Sublimaze or offered as a generic solution from business like Accord or Hameln, its function in making it possible for intricate surgical treatments and handling severe pain is vital. However, its effectiveness necessitates a high level of vigilance, rigorous legal controls, and specialist administration. By comprehending the brand names and the medicinal profile of this powerful opioid, doctor can ensure it is utilized securely and successfully to enhance client results.
Disclaimer: This article is for educational functions just and does not make up medical suggestions. For clinical guidance, please refer to the British National Formulary (BNF) or seek advice from a competent doctor.
