Patient Leaflet Updated 07-May-2026 | Unicorn Pharmaceuticals Limited
Bupivacaine Hydrochloride 1.25 mg/ml and Fentanyl Citrate 2 micrograms/ml Solution for infusion
Bupivacaine Hydrochloride 1 mg/ml and Fentanyl Citrate 2 micrograms/ml Solution for infusion
Bupivacaine Hydrochloride 1.25 mg/ml and Fentanyl Citrate 2 micrograms/ml Solution for infusion
bupivacaine hydrochloride/fentanyl citrate
The name of your medicine is Bupivacaine Hydrochloride 1 mg/ml and Fentanyl Citrate 2 micrograms/ml Solution for infusion and Bupivacaine Hydrochloride 1.25 mg/ml and Fentanyl Citrate 2 micrograms/ml Solution for infusion. It will be referred to as Bupivacaine and Fentanyl infusion for ease hereafter.
1. What Bupivacaine and Fentanyl infusion is and what it is used for
2. What you need to know before you are given Bupivacaine and Fentanyl infusion
3. How Bupivacaine and Fentanyl infusion will be given to you
4. Possible side effects
5. How to store Bupivacaine and Fentanyl infusion
6. Contents of the pack and other information
This medicine contains fentanyl which is an opioid, which can cause addiction. You can get withdrawal symptoms if you stop taking it suddenly.
This medicine is a mixture of two active ingredients: Bupivacaine, which is a local anaesthetic, a medicine used to numb areas of your body in order to relieve pain and Fentanyl (as citrate), which is used to treat pain.
This medicine has been prescribed for you for the treatment of pain during labour and after operations.
It contains fentanyl which belongs to a class of medicines called opioids, which are ‘pain relievers’. This medicine has been provided to you and should not be given to anyone else.
Opioids can cause addiction and you may get withdrawal symptoms if you stop taking it suddenly. Your prescriber should have explained how long you will be taking it for and when it is appropriate to stop, how to do this safely. It will be given to you in hospital under the supervision of an anaesthetist, in an epidural (injection into the lower back).
Talk to your doctor or nurse before you are given Bupivacaine and Fentanyl infusion if you have:
Talk to your prescriber before taking this medicine if you:
Rarely, increasing the dose of this medicine can make you more sensitive to pain. If this happens, you need to speak to your prescriber about your treatment.
If your treatment is stopped withdrawal symptoms may occur. Please tell your doctor or nurse if you think this is happening to you (see also section 4. Possible side effects).
Addiction can cause withdrawal symptoms when you stop taking this medicine. Withdrawal symptoms can include restlessness, difficulty sleeping, irritability, agitation, anxiety, feeling your heartbeat (palpitations), increased blood pressure, feeling or being sick, diarrhoea, loss of appetite, shaking, shivering or sweating. Your prescriber will discuss with you how to gradually reduce your dose before stopping the medicine. It is important that you do not stop taking the medicine suddenly as you will be more likely to experience withdrawal symptoms.
Opioids should only be used by those they are prescribed for. Do not give your medicine to anyone else. Repeated use of opioid painkillers may result in the drug being less effective (you become accustomed to it). It may also lead to dependence and abuse which may result in life-threatening overdose. If you have concern that you may become dependent on Bupivacaine and Fentanyl infusion, it is important that you consult your doctor.
In particular, tell your doctor or pharmacist if you are taking:
Special care will be taken when this medicine is being given to the elderly and ill. If any of the above apply to you, please consult your doctor.
Tell your doctor or nurse if you are taking, have recently taken or might take any other medicines, including those obtained without prescription.
You must not be given Bupivacaine and Fentanyl infusion if you are taking:
Tell your doctor if you are taking any of the following medicines which may interact with Bupivacaine and Fentanyl infusion:
However, if your doctor does prescribe Bupivacaine and Fentanyl infusion together with sedative medicines the dose and duration of concomitant treatment should be limited by your doctor.
Please tell your doctor about all sedative medicines you are taking and follow your doctor’s dose recommendation closely. It could be helpful to inform friends or relatives to be aware of the signs and symptoms stated above. Contact your doctor when experiencing such symptoms.
If you have any doubts about whether this medicine should be given to you, consult your doctor, nurse or pharmacist.
If you are pregnant or breast-feeding, think you may be pregnant or are planning to have a baby, ask your doctor for advice before being given this medicine.
Pregnancy
Do not take Bupivacaine and Fentanyl infusion if you are pregnant or think you might be pregnant unless you have discussed this with your prescriber and the benefits of treatment are considered to outweigh the potential harm to the baby.
If you use Bupivacaine and Fentanyl infusion during pregnancy, your baby may become dependent and experience withdrawal symptoms after the birth which may need to be treated.
Breastfeeding
Do not take Bupivacaine and Fentanyl infusion while you are breastfeeding as fentanyl passes into breast milk and will affect your baby.
Bupivacaine and Fentanyl infusion may affect your ability to drive or operate machinery. If you are discharged from hospital soon after receiving this medicine and plan to resume these activities, ask your doctor when it will be safe to do so.
The medicine can affect your ability to drive as it may make you sleepy or dizzy.
Talk to your doctor or pharmacist if you are not sure whether it is safe for you to drive while you are given this medicine.
This is equivalent to about 43% of the recommended maximum daily dietary intake of sodium for an adult.
Your prescriber should have discussed with you, how long the course will last. They will arrange a plan for stopping treatment. This will outline how to gradually reduce the dose and stop taking the medicine.
Bupivacaine and Fentanyl infusion should only be administered by a doctor who will, in the case of an epidural infusion, have the necessary knowledge and experience in the technique of epidural anaesthesia.
Before administrating an epidural infusion solution, your doctor may inject a test dose of Bupivacaine and Fentanyl infusion to ensure that the solution is not directed into a blood vessel.
Your doctor will decide on the most suitable dosage for your particular case and may decide to reduce the dose if you are elderly or in a weak condition or if you have liver or kidney problems. If you are concerned about how much of this medicine you have received, speak to your doctor immediately.
Use in children:
Bupivacaine and Fentanyl infusion is not recommended for use in children.
Do not suddenly stop taking this medicine. If you want to stop taking this medicine, discuss this with your prescriber first. They will tell you how to do this, usually by reducing the dose gradually so that any unpleasant withdrawal effects are kept to a minimum. Withdrawal symptoms such as restlessness, difficulty sleeping, irritability, agitation, anxiety, feeling your heartbeat (palpitations), increased blood pressure, feeling or being sick, diarrhoea, shaking, shivering or sweating may occur if you suddenly stop taking this medicine.
An overdose may result in a brain disorder known as toxic leukoencephalopathy.
If you have any further questions on the use of this medicine, ask your doctor or nurse.
Like all medicines, this medicine can cause side effects, although not everybody gets them.
All medicines can cause severe potentially life-threatening allergic reactions although serious allergic reactions are rare. Any sudden wheeziness, difficulty in breathing, swelling of the eyelids, face or lips, rash or itching (especially affecting your whole body), shock should be reported to a doctor immediately.
If you notice any of the following side effects speak to your doctor, pharmacist or nurse as soon as possible:
Very common (may affect more than 1 in 10 people):
Common (may affect up to 1 in 10 people):
Uncommon (may affect up to 1 in 100 people):
Rare (may affect up to 1 in 1,000 people):
Not known (frequency cannot be estimated from the available data):
If you notice any of the following signs whilst taking Bupivacaine and Fentanyl infusion, it could be a sign that you have become addicted.
If you notice any of these signs, it is important you talk to your prescriber
If you get any side effects, talk to your doctor, pharmacist or nurse. This includes any possible side effects not listed in this leaflet. You can also report side effects directly via the Yellow Card Scheme at: https://yellowcard.mhra.gov.uk/ or search for MHRA Yellow Card in the Google Play or Apple App Store. By reporting side effects you can help provide more information on the safety of this medicine.
Keep this medicine out of the sight and reach of children.
You should not be given Bupivacaine and Fentanyl infusion after the expiry date which is stated on the container label after EXP.
The doctor or nurse will check that the expiry date on the label has not been passed before administering the infusion to you. The expiry date refers to the last day of that month.
Your doctor or the hospital will store this medicine and are responsible for the quality of the product when it is opened if not used immediately. They are also responsible for correctly disposing of any unused solution. Do not throw away any medicines via wastewater or household waste. Ask your pharmacist how to throw away medicines you no longer use. These measures will help protect the environment.
The active substances are bupivacaine hydrochloride and fentanyl (as citrate).
The other ingredients are sodium chloride, sodium hydroxide and water for injections.
Bupivacaine and Fentanyl infusion is a clear, colourless aqueous sterile solution for infusion and is available in two strengths: Both product strengths are available as 250 ml or 500 ml plastic (polypropylene) bags for infusion in packs of 5.
Not all pack sizes may be marketed.
This leaflet was last revised in January 2026.
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02087325447
02087325447
www.unicornpharma.co.uk