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Morphine Sulfate 30 mg in 1 ml solution for injection – patient leaflet, side effects, dosage

Updated:
Key facts
Status:
Prescription only (POM) Controlled drug (Schedule 2)
Medicine strength:
30 mg in 1 ml (30 mg/ml)
Contains active substance:
ATC code:

Patient leaflet - Morphine Sulfate 30 mg in 1 ml solution for injection

1. What Morphine Sulfate Solution for Injection is and what it is used for

Morphine is an alkaloid with powerful pain relieving properties.

This medicine is used for the relief of severe pain. It is also used to treat breathlessness caused by fluid in the lungs and as a pre-medication before operations.

2. Before you are given Morphine

Sulfate Solution for Injection You should not be given Morphine Sulfate Solution for Injection if:

  • you are allergic to Morphine or any of the other ingredients of this medicine (listed in section 6)
  • you are currently taking drugs used to treat depression known as monoamine oxidase inhibitors (MAOIs) or have taken them in the last 2 weeks
  • you suffer from breathing difficulties (asthma attack or chronic obstructive airways disease)
  • you have suffered a head injury
  • you suffer from alcoholism
  • you suffer from heart problems
  • you are suffering from stomach pains
  • you are suffering from a tumour of the adrenal gland known as phaeochromocytoma
  • you suffer from severe diarrhoea.

Tolerance, dependence, and addiction

This medicine contains morphine which is an opioid medicine. Repeated use of opioids can result in the drug being less effective (you become accustomed to it, known as tolerance).

Repeated use of Morphine Sulfate Solution for Injection can also lead to dependence, abuse, and addiction, which may result in life-threatening overdose. The risk of these side effects can increase with a higher dose and longer duration of use.

Dependence or addiction can make you feel that you are no longer in control of how much medicine you need to take or how often you need to take it. The risk of becoming dependent or addicted varies from person to person. You may have a greater risk of becoming dependent on or addicted to Morphine Sulfate Solution for Injection if:

  • You or anyone in your family have ever abused or been dependent on alcohol, prescription medicines or illegal drugs (“addiction”).
  • You are a smoker.
  • You have ever had problems with your mood (depression, anxiety, or a personality disorder) or have been treated by a psychiatrist for other mental illnesses.

If you notice any of the following signs whilst taking Morphine Sulfate Solution for Injection, it could be a sign that you have become dependent or addicted:

  • You need to take the medicine for longer than advised by your doctor
  • You need to take more than the recommended dose
  • You are using the medicine for reasons other than prescribed, for instance, ‘to stay calm’ or ‘help you sleep’
  • You have made repeated, unsuccessful attempts to quit or control the use of the medicine
  • When you stop taking the medicine you feel unwell, and you feel better once taking the medicine again (‘withdrawal effects’)

If you notice any of these signs, speak to your doctor to discuss the best treatment pathway for you, including when it is appropriate to stop and how to stop safely (See section 3, If you stop taking Morphine Sulfate Solution for Injection)

Warnings and precautions

Talk to your doctor or pharmacist before being given Morphine Sulfate Solution for Injection if you:

  • suffer from low blood pressure
  • suffer from underactive thyroid or adrenal gland
  • suffer from problems with your prostate gland and have difficulty passing urine
  • suffer from any liver or kidney diseases
  • suffer from fits
  • suffer from asthma
  • have bowel disease, such as Crohn’s disease or ulcerative colitis
  • suffer from blockages of the bowel
  • have problems with your bile duct

Talk to your doctor or pharmacist if you experience any of the following symptoms while being given Morphine Sulfate Solution for Injection:

  • Increased sensitivity to pain despite the fact that you are taking increasing doses (hyperalgesia). Your doctor will decide whether you will need a change in dose or a change in strong analgesic (“painkiller”), Read all of this leaflet carefully before you start using this medicine because it contains important information for you.
  • Keep this leaflet. You may need to read it again.
  • If you have any further questions, ask your doctor or pharmacist.
  • If you get any side effects, talk to your doctor, pharmacist or nurse. This includes any possible side effects not listed in this leaflet. See section 4. PACKAGE LEAFLET: INFORMATION FOR THE USER

    Morphine Sulfate 10mg/ml, 15mg/ml, 20mg/ml & 30mg/ml Solution for Injection

    Morphine Sulfate

    (see section 2).

    • Weakness, fatigue, lack of appetite, nausea, vomiting or low blood pressure. This may be a symptom of the adrenals producing too little of the hormone cortisol, and you may need to take hormone supplement.
    • Loss of libido, impotence, cessation of menstruation. This may be because of decreased sex hormone production.
    • If you have once been dependent on drugs or alcohol. Also tell if you feel that you are becoming dependent on Morphine Sulfate Solution for Injection while you are using it. You may have started to think a lot about when you can take the next dose, even if you do not need it for the pain.
    • Abstinence symptoms or dependence. The most common abstinence symptoms are mentioned in section 3. If this occurs, your doctor may change the type of medicine or the times between doses.
    • Acute generalized exanthematous pustulosis (AGEP) has been reported in association with Morphine Sulfate Solution for Injection treatment. Symptoms usually occur within the first 10 days of treatment. Tell your doctor if you have ever developed a severe skin rash or skin peeling, blistering and/or mouth sores after taking Morphine Sulfate Solution for Injection or other opioids. Stop using Morphine Sulfate Solution for Injection and seek medical attention immediately, if you notice any of the following symptoms: blistering, widespread scaly skin or pus-filled spots together with fever.

Morphine Sulfate Solution for Injection can cause sleep-related breathing disorders such as sleep apnoea (breathing pauses during sleep) and sleep related hypoxemia (low oxygen level in the blood). The symptoms can include breathing pauses during sleep, night awakening due to shortness of breath, difficulties to maintain sleep or excessive drowsiness during the day. If you or another person observe these symptoms, contact your doctor. A dose reduction may be considered by your doctor.

Contact your doctor if you experience severe upper abdominal pain possibly radiating to the back, nausea, vomiting or fever as this could be symptoms associated with inflammation of the pancreas (pancreatitis) and the biliary tract system.

Other medicines and Morphine Sulfate Solution for Injection

Tell your doctor or pharmacist if you are taking, have recently taken or might take any other medicines including medicines obtained without prescription. Please tell your doctor if you are taking any of the following medicines:

  • medicines used to treat severe depression known as monoamine oxidase inhibitors (MAOIs) e.g. moclobemide. Tell your doctor even if you have stopped taking them within the last two weeks
  • medicines used to help you to sleep (hypnotics) e.g. chloral and barbiturates
  • medicines used to treat anxiety (anxiolytics) e.g. diazepam

    D06124 ability to drive.

  • However, you would not be committing an offence if:
  • The medicine has been prescribed to treat a

    medical or dental problem and

  • You have taken it according to the instructions

    given by the prescriber or in the information provided with the medicine and

  • It was not affecting your ability to drive safely Talk to your doctor or pharmacist if you are not sure whether it is safe for you to drive while taking this medicine.

Having Morphine Sulfate Solution for Injection with alcohol

You are advised not to drink alcohol during your treatment with this medicine.

Morphine Sulfate Solution for Injection contains sodium and sodium metabisulfite (E223) 10 mg

This medicinal product contains 3.26 mg sodium per dose, equivalent to 0.16 % of the WHO recommended maximum daily intake of 2g sodium for an adult. 15 mg

This medicinal product contains 3.02 mg sodium per dose, equivalent to 0.15% of the WHO recommended maximum daily intake of 2g sodium for an adult. 20 mg

This medicine contains less than 1 mmol sodium (23 mg) per dose, that is to say essentially ‘sodium-free’ 30 mg

This medicine contains less than 1 mmol sodium (23 mg) per dose, that is to say essentially ‘sodium-free’ The sodium metabisulfite may rarely cause severe hypersensitivity reactions and bronchospasm

3. How Morphine Sulfate Solution for Injection will be given

This medicine is an injection and will be given to you by your doctor. Your doctor will determine the dose you need.

Before starting treatment and regularly during treatment, your doctor will discuss with you what you may expect from using Morphine Sulfate Solution for Injection, when and how long you need to take it, when to contact your doctor, and when you need to stop it (see also, If you stop using Morphine Sulfate Solution for Injection, in this section).

The usual adult dose for relief of pain by

subcutaneous injection (an injection underneath the skin) or intramuscular injection (an injection into a muscle) is 10mg every four hours, if necessary. However, this can vary between 5mg and 20mg depending on your size and response to the drug. For severe pain your doctor may give you a slow intravenous injection (an injection given slowly into a vein). The usual dose is quarter to half of the intramuscular dose.

  • If you are elderly, severely run down including feeling weak and feeble, or have liver and kidney

    problems the dose will be lower. You may also be given a reduced dose if you suffer from any of the conditions listed in section 2 entitled “Talk to your doctor before Morphine Injection is given to you if you:”

    • Your doctor will decide the dose that is best for you. If you do not understand what you are being given, or are in any doubt, ask your doctor or nurse. If you are given too much of Morphine Sulfate Solution for Injection:

This medicine will be given to you by your doctor so it is unlikely you will receive too much. Your doctor has information on how to recognise and treat an overdose.

People who have taken an overdose may get pneumonia from inhaling vomit or foreign matter, symptoms may include breathlessness, cough and fever.

People who have taken an overdose may also have breathing difficulties leading to unconsciousness or even death.

If you experience any of the following, tell your doctor immediately:

  • difficulty in breathing
  • pinpoint pupils
  • low blood pressure
  • feeling cold
  • fits
  • confusion
  • severe drowsiness
  • slow heartbeat
  • severe nervousness or restlessness

If you have any further questions on the use of this medicine, ask your doctor, pharmacist or nurse. If you stop using Morphine Sulfate Solution for Injection

Do not stop treatment with Morphine Sulfate Solution for Injection unless agreed with your doctor. If you want to stop the treatment with Morphine Sulfate Solution for Injection, ask your doctor how to slowly decrease the doses so you avoid abstinence symptoms. Abstinence symptoms may include body aches, tremors, diarrhoea, stomach pain, nausea, flu-like symptoms, fast heartbeat and large pupils. Psychological symptoms include an intense feeling of unsatisfaction, anxiety and irritability

4. Possible Side Effects

Like all medicines Morphine Sulfate Solution for Injection can cause side effects, although not everybody gets them.

Tell your doctor or nurse immediately if you experience any of the following serious side effects:

  • Severe skin reaction with blistering, widespread scaly skin, pus-filled spots together with fever. This could be a condition called Acute Generalized Exanthematous Pustulosis (AGEP).
  • severe allergic reaction, with a rash, swelling of the eyes, lips and throat, and difficulty breathing
  • fits

    • physical and psychological dependence
    • Serious allergic reaction which causes difficulty in breathing or dizziness.

Other side effects include:

  • hallucinations (seeing or hearing things that aren’t real)
  • confusion
  • mood changes
  • headaches
  • dizziness
  • drowsiness
  • sweating
  • feeling faint when getting up from a seated position
  • pinpoint pupils
  • a fast, slow or irregular heartbeat
  • feeling your heart beat (palpitations)
  • facial flushing
  • constipation
  • feeling or being sick
  • dry mouth
  • spasms in the lower abdomen
  • rashes and itching
  • difficulty achieving or maintaining an erection
  • difficulty in passing urine
  • blurred vision
  • stiff muscle
  • pain irritation at injection site
  • an increased sensitivity to pain
  • abstinence symptoms or dependence (for symptoms see section 3: If you stop taking Morphine Sulfate Solution for Injection).
  • Sleep apnoea (breathing pauses during sleep)
  • Symptoms associated with inflammation of the pancreas (pancreatitis) and the biliary tract system, e.g. severe upper abdominal pain possibly radiating to the back, nausea, vomiting or fever. Reporting of side effects

If you get any side effects, talk to your doctor or pharmacist or nurse. This includes any possible side effects not listed in this leaflet. You can also report side effects directly via Yellow Card Scheme. Website: www.mhra.gov.uk/yellowcard 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.

5. How to Store Morphine Sulfate Solution for Injection

Keep out of the sight and reach of children. You should not be given Morphine Sulfate Solution for Injection after the expiry date on the ampoule and carton label. The expiry date refers to the last day of that month. The doctor or nurse will check that the product has not passed this date.

Do not store above 25°C.

Keep the ampoule in the outer carton in order to protect from light.

Medicines should not be disposed of via wastewater or household waste. Ask your pharmacist how to dispose

of medicines no longer required. These measures will help to protect the environment.

6. Contents of the pack and other information

What Morphine Sulfate Solution for Injection contains:

The active ingredient: morphine sulfate. Each ampoule contains 10, 15, 20 or 30 mg morphine sulfate.

The other ingredients: sodium chloride, sodium metabisulfite (E223) and water for injections. This medicine may also contain sodium hydroxide solution or sulfuric acid solution.

What Morphine Sulfate Solution for Injection looks like and contents of the pack:

Morphine Sulfate Solution for Injection is a clear, colourless or almost colourless, particle free solution, supplied in clear, colourless 1ml glass ampoules. This medicine is supplied to your doctor in packs of 10 ampoules.

Manufacturer:

Macarthys Laboratories t/a Martindale Pharma

Bampton Road,

Harold Hill,

Romford,

RM3, 8UG

United Kingdom

Marketing Authorisation Holder:

Martindale Pharma,

Bampton Road,

Harold Hill,

Romford,

RM3 8UG,

United Kingdom.

Product Licence Numbers:

PL 01883/6138. PL 01883/6176. PL 01883/6177. PL 01883/6178

This leaflet was last revised in October 2023

The following information is intended for healthcare professionals only:

Prod: Morphine Sulfate 10mg/ml, 15mg/ml, 20mg/ml & 30mg/ml PIL Oral Solution UK
Paper Size: 340 x 260mm
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t: +44 (0) 1732 743 455

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About this document

Source: MHRA - Medicines and Healthcare products Regulatory Agency (products.mhra.gov.uk) · Marketing authorisation: PL 01883/6178

Last revision stated in the text: October 2023 · MHRA data as of 13 October 2026

What the sections and the side effect frequencies mean: How to read a patient leaflet

Found a mistake? Tell us on the contact page.

The information on this site does not replace the advice of a doctor or pharmacist.

Facts about Morphine Sulfate 30 mg in 1 ml solution for injection

What these facts mean

Prescription needed?? Yes, prescription-only medicine (POM)
Controlled drug?
Yes, Schedule 2 of the Misuse of Drugs Regulations?
  • Controlled drugs are medicines that UK law controls more strictly because they can be misused or cause dependence. The Misuse of Drugs Regulations 2001 divide them into 5 schedules: schedule 1 has the strictest rules and schedule 5 the least strict.
  • Schedule 2 is the strictest group of prescribed medicines, for example strong opioid painkillers and medicines for ADHD.
  • A prescription is valid for 28 days and usually covers up to 30 days of treatment. In England it cannot be issued as a repeat dispensing prescription.
  • When you collect it, the pharmacist must check whether you are the patient and may ask for ID.
  • Travelling abroad: carry it in your hand luggage, take your prescription or a letter from your doctor to show it is yours, and check the rules of the country you are going to with its embassy before you travel (GOV.UK).
Active substance? Morphine
Strength? 30 mg in 1 ml (30 mg/ml)
Pharmaceutical form? Solution for injection
A clear, colourless or almost colourless, particle free solution
How is it taken? Subcutaneous, Intravenous, Intramuscular
Excipients? Sodium Chloride,, Sodium Metabisulfite(E223), Water for Injection., The pH may be adjusted with Sodium Hydroxide or Sulfuric Acid Solution.
Is it available?? Listed as available (NHS Dictionary of Medicines and Devices – not a record of current supplies)
Shelf life? 36 months.
Storage Do not store above 25°C.
Keep the ampoules in the outer carton in order to protect from light. .
Drug group (ATC)? Natural opium alkaloids
  1. N Nervous system drugs
    1. N02 Analgesics
      1. N02A Opioid analgesics
        1. N02AA Natural opium alkaloid analgesics
          1. N02AA01 morphine
Marketing authorisation? PL 01883/6178 (first authorised 19 January 1982)
Marketing authorisation holder? Macarthys Laboratories Ltd t/a Martindale Pharma
Codes? BNF 04070200

Sources: the MHRA product information (products.mhra.gov.uk) and the NHS Dictionary of Medicines and Devices (dm+d), release 11.1.0 of 9 November 2026, NHS Business Services Authority. Contains public sector information licensed under the Open Government Licence v3.0.