Pharmacy Guide

Patient leaflets and SmPCs, drug interaction checker, official dosages and NHS pharmacy opening hours — all in one place.

Pharmacy Guide

Patient leaflets and SmPCs, drug interaction checker, official dosages and NHS pharmacy opening hours — all in one place.

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Phenylephrine 50 micrograms/ml, Solution for Injection in Pre-filled Syringe

⚠ This medicine appears to have been discontinued

The electronic medicines compendium (emc) no longer publishes a Summary of Product Characteristics for this product, which usually means it is no longer marketed in the UK. The patient leaflet below is kept for reference, but the product may not be available.

If you were prescribed this medicine, other products containing Phenylephrine hydrochloride may still be available. Do not stop your treatment — ask your pharmacist or GP what to use instead.

Active substance: Phenylephrine hydrochloride
Source: electronic medicines compendium (emc)
Official leaflet: Read the PIL on emc

What it is and what it is used for

for

6) Connect the syringe to the IV access. Push the plunger slowly to inject the required volume. 7) Any unused medicinal product or waste material should be disposed of in accordance with local requirements.

This medicine belongs to a group of adrenergic and dopaminergic agents. It is used to treat low blood pressure during anaesthesia.

What you need to know before you take it

Phenylephrine Injection You will not receive Phenylephrine Injection:

  • if you are allergic to phenylephrine hydrochloride or any of the other ingredients of this medicine (listed in section 6);
  • if you suffer from severe high blood pressure, or peripheral vascular disease (poor blood circulation);
  • if you are taking a Monoamine Oxydase inhibitor (MAO) (or within 2 weeks of their withdrawal), that is used to treat depression (such as iproniazide, nialamide);
  • if you suffer from severe overactive thyroid gland (hyperthyroidism). Warnings and precautions Talk to your doctor, pharmacist or nurse before you are given Phenylephrine Injection:
  • if you are elderly;
  • if you are diabetic;
  • if you suffer from arterial hypertension;
  • if you have an overactive thyroid gland (uncontrolled hyperthyroidism);
  • if you have blood vessel disease, such as arteriosclerosis (hardening and thickening of the walls of the blood vessels);
  • if you have poor blood circulation in the brain;
  • if you suffer from heart disease including chronic heart conditions, peripheral vascular insufficiency, heart rhythm disorders, tachycardia (high heart rate), bradycardia (low heart rate), partial heart block, angina pectoris;
  • if you suffer from a closed angle glaucoma (a rare eye disease). In patients with serious heart failure, phenylephrine may worsen the heart failure as a consequence of blood vessel constriction. The blood pressure in your arteries will be monitored during treatment. If you have heart disease, additional monitoring of vital functions will be performed. Children This medicine is not recommended for use in children due to insufficient data on efficacy, safety and dosage recommendations. Other medicines and Phenylephrine Injection Tell your doctor if you are using, have recently used or might use any other medicines, such as:
  • certain antidepressants (iproniazid, nialamide, moclobenide, toloxatone, imipramine, milnacipran or venlafaxine);
  • medicine used to treat infections (linezolid);
  • certain medicines used to treat migraine (dihydroergotamine, ergotamine, methylergometrine, methylsergide);
  • certain medicines used to treat Parkinson disease (bromocriptine, lisuride, pergolide);
  • medicine used to inhibit the production of a hormone responsible for lactation (cabergoline);
  • anaesthetics that are inhaled (desflurane, enflurane, halothane, isoflurane, methoxyflurane, sevoflurane);
  • medicine used as an appetite suppressant (sibutramine);
  • medicine used to treat high blood pressure (guanethidine);
  • medicines used to treat heart failure and certain irregular heartbeats (cardiac glycosides);
  • medicine used to treat abnormal heart rhythm (quinidine);
  • medicine used during labour (oxytocin). Pregnancy and breast-feeding The safety of this medicine during pregnancy and breast-feeding has not been established, but the use of Phenylephrine Injection is possible during pregnancy if necessary. Use of this medicine during breast-feeding is not recommended. However, in the event of a single administration during childbirth, breast-feeding is possible. If you are pregnant or breast-feeding, think you may be pregnant or are planning to have a baby, ask your doctor, pharmacist or nurse for advice before being given this medicine. Driving and using machines Talk to your doctor if you want to drive and/or use machines after being given this medicine. Phenylephrine Injection contains sodium This medicine contains 37.2 mg sodium (main component of cooking/table salt) in each pre-filled syringe. This is equivalent to 1.9% of the recommended maximum daily dietary intake of sodium for an adult.

How to take it

The administration will be performed by a healthcare professional with appropriate training and relevant experience, who will decide the correct dosage for you and when and how the injection should be administered. The recommended doses are: Use in Adults Your doctor will determine the dose to be administered, and may repeat or adjust it until the desired effect is attained. Use in patients with impaired renal function (kidneys not functioning well) Lower doses of phenylephrine may be needed in patients with impaired renal function. Use in patients with impaired liver function (liver not functioning well) Higher doses of phenylephrine may be needed in patients with cirrhosis of the liver. Use in older people Treatment in older people should be carried out with care. Use in children This medicine is not recommended for use in children due to insufficient data on efficacy, safety and dosage recommendations. If you have been given more Phenylephrine Injection than you should: You may have the following symptoms: palpitations, cardiac rhythm disorders (tachycardia, cardiac arrhythmias). If you have any further questions on the use of this medicine, ask your doctor, pharmacist, or nurse.

Possible side effects

Like all medicines, this medicine can cause side effects, although not everybody gets them.

Some side effects may be serious (frequencies are not known). Tell your doctor straight away if you get any of the following:

  • chest pain or pain due to angina,
  • irregular heartbeat,
  • feeling the heart pumping in the chest,
  • bleeding in the brain (speech disorder, dizziness, paralysis of one side of the body),
  • psychosis (losing contact with reality). Other side effects may include (frequencies are not known):
  • reaction of hypersensitivity (allergy),
  • excessive dilation of the pupils,
  • increased pressure in the eye (aggravation of glaucoma),
  • excitability (excessive sensitivity of an organ or body part),
  • agitation (restlessness),
  • anxiety,
  • confusion,
  • headache,
  • nervousness,
  • insomnia (difficulty falling or staying asleep),
  • shaking (tremor),
  • burning of the skin,
  • prickling of the skin,
  • itching or tingling skin sensation (paraesthesia),
  • slow or high heart rate,
  • high blood pressure,
  • difficulty in breathing,
  • fluids in the lung,
  • nausea,
  • vomiting,
  • sweating,
  • pallor or skin blanching (pale colour of the skin),
  • goose bump,
  • tissue damage at the site of the injection,
  • muscle weakness,
  • difficulty in passing urine or urine retention. Reporting of side effects 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 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.

How to store it

Phenylephrine Injection Keep this medicine out of the sight and reach of children. You should not be given this medicine after the expiry date which is stated on the carton and syringe label. The expiry date refers to the last day of that month. Your doctor or nurse will check this. This medicine does not require any special temperature storage conditions. Keep the blister in the outer carton in order to protect from light. Keep the syringe in its unopened blister until use. Do not use this medicine if you notice visible signs of deterioration. Any syringe, even partially used, should be discarded appropriately after use. 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.

Contents of the pack and other information

What Phenylephrine Injection contains The active ingredient is phenylephrine hydrochloride.

  • Each ml of solution for injection contains phenylephrine hydrochloride, equivalent to 50 micrograms phenylephrine.
  • Each 10 ml pre-filled syringe contains phenylephrine hydrochloride, equivalent to 500 micrograms phenylephrine.
  • The other ingredients are sodium chloride, sodium citrate, citric acid monohydrate, sodium hydroxide, and water for injections. What Phenylephrine Injection looks like and contents of the pack Phenylephrine Injection is a clear colourless solution, in a 10 ml polypropylene pre-filled syringe, individually packaged in a transparent blister pack. The pre-filled syringes are available in boxes of 1 and 10 syringes. Not all pack sizes may be marketed. Marketing Authorisation Holder and Manufacturer Marketing Authorisation Holder Laboratoire AGUETTANT 1, rue Alexander Fleming 69007 LYON France Manufacturer Laboratoire AGUETTANT Lieu-dit "Chantecaille" 07340 CHAMPAGNE France For any information about this medicine, please contact the local representative of the Marketing Authorisation Holder: AGUETTANT Ltd N°1, Farleigh House – Flax Bourton BRISTOL – BS48 1UR United Kingdom This leaflet was last revised in 07/2020. Detailed information on this medicinal product is available on the website of the Medicines and Healthcare Products Regulatory Agency (MHRA).

TECHNICAL LEAFLET

Phenylephrine 50 micrograms/ml, Solution for injection in pre-filled syringe The following information is intended for medical and healthcare professionals only: This is an extract from the Summary of Product Characteristics to assist in the administration of PHENYLEPHRINE 50 micrograms/ml, solution for injection in pre-filled syringe. When determining appropriateness of use in a particular patient, the prescriber should be familiar with the Summary of Product Characteristics of the product. Qualitative and quantitative composition: Each ml of solution for injection contains phenylephrine hydrochloride equivalent to 50 micrograms (0.05 mg) phenylephrine. Each 10 ml pre-filled syringe contains phenylephrine hydrochloride equivalent to 500 micrograms (0.5 mg) phenylephrine. Excipients with known effect: sodium. Each ml of solution for injection contains 3.72 mg equivalent to 0.162 mmol of sodium. Each 10 ml pre-filled syringe contains 37.2 mg equivalent to 1.62 mmol of sodium. Other excipients: Sodium citrate, Citric acid monohydrate, Sodium hydroxide, water for injections. Description of solution: Clear colorless solution. pH: 4.7 – 5.3 Osmolality: 270-300 mOsm/Kg Posology and method of administration Posology Adults Normal dose is 50 to 100 micrograms, which can be repeated until the desired effect is obtained. One bolus dose should not exceed 100 micrograms. Renal impairment Lower doses of phenylephrine may be needed in patients with impaired renal function. Hepatic Impairment Higher doses of phenylephrine may be needed in patients with cirrhosis of the liver. Elderly Treatment of the elderly should be carried out with care. Paediatric population The safety and efficacy of phenylephrine in children have not been established. No data are available. Method of administration: Intravenous bolus injection. Phenylephrine, 50 micrograms/ml, solution for injection should only be administered by healthcare professionals with appropriate training and relevant experience. The pre-filled syringe is not suitable for use in a syringe driver. Contraindications Phenylephrine should not be used:

  • in case of hypersensitivity to the active substance or to any of the excipients listed in section 6.1;
  • in patients with severe hypertension or peripheral vascular disease due to the risk of ischemic gangrene or vascular thrombosis;
  • in combination with non-selective monoamine oxidase inhibitors (MAOs) (or within 2 weeks of their withdrawal) due to risk of paroxysmal hypertension and possibly fatal hyperthermia (see section 4.5);
  • in patients with severe hyperthyroidism. Special warning and precautions for use The arterial blood pressure should be monitored during treatment. Phenylephrine should be administered with care to patients with:
  • diabetes mellitus,
  • arterial hypertension,
  • uncontrolled hyperthyroidism,
  • coronary heart disease and chronic heart conditions,
  • non-severe peripheral vascular insufficiency,
  • bradycardia,
  • partial heart block,
  • tachycardia,
  • arrhythmias,
  • angina pectoris (phenylephrine can precipitate or exacerbate angina in patients with coronary artery disease and history of angina),
  • aneurysm,
  • closed angle glaucoma. Phenylephrine can induce a reduction in cardiac output. Therefore, care should be exercised in administering to patients with arteriosclerosis, the elderly and to patients with impaired cerebral or coronary circulation. In patients with reduced cardiac output or coronary vascular disease, vital organ functions should be closely monitored and dose reduction should be considered when systemic blood pressure is near the lower end of the target range. In patients with serious heart failure or cardiogenic shock, phenylephrine may cause deterioration in the heart failure as a consequence of the induced vasoconstriction (increase in afterload). Particular attention should be paid when administering Phenylephrine injection to avoid extravasation, since this may cause tissue necrosis. This medicinal product contains 37.2 mg sodium per pre-filled syringe, equivalent to 1.9% of the WHO recommended maximum daily intake of 2 g sodium for an adult. Overdose: Symptoms of overdose include headache, nausea, vomiting, paranoid psychosis, hallucinations, hypertension and reflex bradycardia. Cardiac arrhythmia such as ventricular extrasystoles and short paroxysmal episodes of ventricular tachycardia may occur. Treatment should consist of symptomatic and supportive measures. The hypertensive effects may be treated with an alpha-adrenoceptor blocking drug, such as phentolamine. Pharmaceutical particulars: Incompatibilities: In the absence of compatibility studies, this medicinal product must not be mixed with other medicinal products. Storage: This medicinal product does not require any special temperature storage conditions. Keep the syringe in its unopened blister until use. Keep the blister in the outer carton in order to protect from light.

Frequently asked questions about Phenylephrine 50 micrograms/ml, Solution for Injection in Pre-filled Syringe

How do I take Phenylephrine 50 micrograms/ml, Solution for Injection in Pre-filled Syringe?

Phenylephrine 50 micrograms/ml, Solution for Injection in Pre-filled Syringe comes as injection containing 50micrograms/ml. Always follow the dose your doctor or pharmacist has given you, and read the leaflet that comes with the medicine.

What is the active substance in Phenylephrine 50 micrograms/ml, Solution for Injection in Pre-filled Syringe?

The active substance in Phenylephrine 50 micrograms/ml, Solution for Injection in Pre-filled Syringe is phenylephrine hydrochloride.

Where does this information come from?

This leaflet reproduces the patient information leaflet approved for Phenylephrine 50 micrograms/ml, Solution for Injection in Pre-filled Syringe, as published on the electronic medicines compendium (emc). The version printed inside your medicine’s packaging is the one that applies to you.

Can I get Phenylephrine 50 micrograms/ml, Solution for Injection in Pre-filled Syringe without a prescription?

Whether a medicine is available over the counter or on prescription only depends on its licence. Check the leaflet, or ask your pharmacist — they can tell you straight away.

About this leaflet

The text above reproduces the patient information leaflet approved for this medicine, restructured for easier reading.

Medical disclaimer: This page is for information only and does not replace advice from your doctor or pharmacist. Always read the leaflet supplied with your medicine. If you are unwell, call NHS 111; in an emergency, call 999.

Medicines with the same active substance: Phenylephrine hydrochloride (60 medicines)
See every medicine containing this substance, or browse the full A–Z of active substances.
⚕For healthcare professionals — Summary of Product Characteristics (SmPC)Full SmPC: dosage, interactions, contraindications, warnings+
Technical information intended for healthcare professionals (doctors and pharmacists). The Summary of Product Characteristics (SmPC) is the official document approved by the MHRA/EMA. It does not replace the patient leaflet or a doctor’s advice.

4.1. Therapeutic indications

Treatment of hypotension during spinal, epidural or general anaesthesia.

4.2. Posology and method of administration

Posology

Adults

Normal dose is 50 to 100 micrograms, which can be repeated until the desired effect is obtained. One bolus dose should not exceed 100 micrograms.

Renal impairment

Lower doses of phenylephrine may be needed in patients with impaired renal function.

Hepatic Impairment

Higher doses of phenylephrine may be needed in patients with cirrhosis of the liver.

Elderly:

Treatment of the elderly should be carried out with care.

Paediatric population

The safety and efficacy of phenylephrine in children have not been established. No data are available.

Method of administration:

Intravenous bolus injection.

Phenylephrine, 50 micrograms/ml, solution for injection should only be administered by healthcare professionals with appropriate training and relevant experience.

The pre-filled syringe is not suitable for use in a syringe driver.

4.3. Contraindications

Phenylephrine should not be used:

- In case of hypersensitivity to the active substance or to any of the excipients listed in section 6.1;

- in patients with severe hypertension or peripheral vascular disease due to the risk of ischemic gangrene or vascular thrombosis;

- in combination with non-selective monoamine oxidase inhibitors (MAOs) (or within 2 weeks of their withdrawal) due to risk of paroxysmal hypertension and possibly fatal hyperthermia (see section 4.5);

- in patients with severe hyperthyroidism.

4.4. Special warnings and precautions for use

The arterial blood pressure should be monitored during treatment.

Phenylephrine should be administered with care to patients with:

- diabetes mellitus;

- arterial hypertension;

- uncontrolled hyperthyroidism;

- coronary heart disease and chronic heart conditions;

- non-severe peripheral vascular insufficiency,

- bradycardia;

- partial heart block;

- tachycardia;

- arrhythmias;

- angina pectoris (phenylephrine can precipitate or exacerbate angina in patients with coronary artery disease and history of angina);

- aneurysm;

- closed angle glaucoma.

Phenylephrine can induce a reduction in cardiac output. Therefore, care should be exercised in administering to patients with arteriosclerosis, the elderly and to patients with impaired cerebral or coronary circulation.

In patients with reduced cardiac output or coronary vascular disease, vital organ functions should be closely monitored and dose reduction should be considered when systemic blood pressure is near the lower end of the target range.

In patients with serious heart failure or cardiogenic shock, phenylephrine may cause deterioration in the heart failure as a consequence of the induced vasoconstriction (increase in afterload).

Particular attention should be paid when administering Phenylephrine injection to avoid extravasation, since this may cause tissue necrosis.

This medicinal product contains 37.2 mg sodium per pre-filled syringe, equivalent to 1.9 % of the WHO recommended maximum daily intake of 2 g sodium for an adult.

4.5. Interaction with other medicinal products and other forms of interaction

Contraindicated combinations (see section 4.3)

• Non-selective monoamine oxidase inhibitors (MAOs) (iproniazid, nialamide)

Paroxysmal hypertension, hyperthermia possibly fatal. Due to the long duration of action of MAOIs, this interaction is still possible 15 days after discontinuation of the MAOI.

Inadvisable combinations

• Dopaminergic ergot alkaloids (bromocriptine, cabergoline, lisuride, pergolide):

Risk of vasoconstriction and/or hypertensive crisis.

• Vasoconstrictor ergot alkaloids (dihydroergotamine, ergotamine, methylergometrine, methylsergide):

Risk of vasoconstriction and/or hypertensive crisis.

• Tricyclic antidepressants (e.g. imipramine):

Paroxysmal hypertension with possibility of arrhythmias (inhibition of adrenaline or noradrenaline entry in sympathetic fibres).

• Noradrenergic-serotoninergic antidepressants (minalcipram, venlafaxine):

Paroxysmal hypertension with possibility of arrhythmias (inhibition of adrenaline or noradrenaline entry in sympathetic fibres).

• Selective type A monoamine oxidase inhibitors (MAOs) (moclobemide, toloxatone)

Risk of vasoconstriction and/or hypertensive crisis.

• Linezolid:

Risk of vasoconstriction and/or hypertensive crisis.

• Guanethidine and related products:

Substantial increase in blood pressure (hyperreactivity linked to the reduction in sympathetic tone and /or to the inhibition of adrenaline or noradrenaline entry in sympathetic fibres). If the combination cannot be avoided, use with caution lower doses of sympathomimetic agents.

• Cardiac glycosides, quinidine:

Increased risk of arrhythmias.

• Sibutramine:

Paroxysmal hypertension with possibility of arrhythmias (inhibition of adrenaline or noradrenaline entry in sympathetic fibres).

• Halogenated volatile anaesthetics (desflurane, enflurane, halothane, isoflurane, methoxyflurane, sevoflurane):

Risk of perioperative hypertensive crisis and arrhythmia.

Combinations requiring precautions for use:

• Oxytocic agents:

The effect of presso-active sympathomimetic amines is potentiated. Thus, some oxytocic agents may cause severe persistent hypertension and strokes can occur during post-partum period.

4.6. Fertility, pregnancy and lactation

Pregnancy

Animal studies are insufficient with respect to reproductive toxicity and teratogenicity (see section 5.3).

Administration of phenylephrine in late pregnancy or labour may potentially cause foetal hypoxia and bradycardia. Use of injectable phenylephrine is possible during pregnancy in accordance with the indications.

The combination with some oxytocic agents can cause severe hypertension (see section 4.5).

Breast-feeding

Small quantities of phenylephrine are excreted in human breast milk and oral bioavailability may be low.

Administering vasoconstrictors to the mother exposes the infant to a theoretical risk of cardiovascular and neurological effects. However, in the event of a single bolus administration during childbirth, breast-feeding is possible.

Fertility

There is no available data concerning fertility after exposure to phenylephrine (see section 5.3).

4.7. Effects on ability to drive and use machines

Not relevant.

4.8. Undesirable effects

Summary of the safety profile

The most common adverse events of phenylephrine are bradycardia, hypertensive episodes, nausea and vomiting. Hypertension is more frequent with high doses.

The most commonly reported cardiovascular adverse event appears to be bradycardia, likely due to baroreceptor-mediated vagal stimulation and consistent with the pharmacological effect of phenylephrine.

List of adverse reactions

Frequency: Not known (cannot be estimated from available data)

Immune system disorders:

Not known: hypersensitivity

Psychiatric disorders:

Not known: Anxiety, excitability, agitation, psychotic states, confusion.

Nervous system disorders

Not known: Headache, nervousness, insomnia, paresthesia, tremor.

Eye disorders:

Not known: Mydriasis, aggravation of pre-existing angle-closure glaucoma

Cardiac disorders:

Not known: Reflex bradycardia, tachycardia, palpitations, hypertension, arrhythmia, angina pectoris, myocardial ischemia.

Vascular disorders:

Not known: Cerebral haemorrhage, hypertensive crisis

Respiratory, thoracic and mediastinal disorders:

Not known: Dyspnoea, pulmonary oedema

Gastrointestinal disorders:

Not known: Nausea, vomiting

Skin and subcutaneous tissue disorders:

Not known: Sweating, pallor or skin blanching, piloerection, skin necrosis with extravasation

Musculoskeletal and connective tissue disorders:

Not known: muscular weakness

Renal and urinary disorders:

Not known: Difficulty in micturition and urinary retention

Description of selected adverse reactions

As phenylephrine has been frequently used in the critical care setting in patients with hypotension and shock, some of the reported serious adverse events and deaths are probably related to the underlying disease and not related to the use of phenylephrine.

Other special population(s)

Elderly: risk for phenylephrine toxicity is increased in elderly patients (see section 4.4).

Reporting of suspected adverse reactions

Reporting suspected adverse reactions after authorisation of the medicinal product is important. It allows continued monitoring of the benefit/risk balance of the medicinal product. Healthcare professionals are asked to report any suspected adverse reactions via Yellow Card Scheme

Website: www.mhra.gov.uk/yellowcard or search for MHRA Yellow Card in the Google Play or Apple App Store

4.9. Overdose

Symptoms of overdose include headache, nausea, vomiting, paranoid psychosis, hallucinations, hypertension and reflex bradycardia. Cardiac arrhythmia such as ventricular extrasystoles and short paroxysmal episodes of ventricular tachycardia may occur.

Treatment should consist of symptomatic and supportive measures. The hypertensive effects may be treated with an alpha-adrenoceptor blocking drug, such as phentolamine.

🇷🇴 Known in Romania as

Medicines sold in Romania with the same active substance: Cunoscut în România ca

  • FENILEFRINA HYPERICUM 50 micrograme/ml prescriptionPHENYLEPHRINUM · injection / infusion
  • FENILEFRINA AGUETTANT 100 micrograme/ml prescriptionPHENYLEPHRINUM · injection / infusion

Same active substance. The strength, the form and whether you need a prescription can differ. Always ask a pharmacist before you switch. Romanian medicines in the UK →

🇵🇱 Known in Poland as

Medicines sold in Poland with the same active substance: W Polsce znany jako

  • Phenylephrine AguettantPhenylephrinum · injection / infusion
  • BiorphenPhenylephrini hydrochloridum · injection / infusion

Same active substance. The strength, the form and whether you need a prescription can differ. Always ask a pharmacist before you switch. Polish medicines in the UK →

💬 Ask about this leaflet

Ask anything about Phenylephrine 50 micrograms/ml, Solution for Injection in Pre-filled Syringe. The assistant answers only from this leaflet — if the leaflet does not cover it, it will say so. It does not give medical advice.

Answers come from the patient leaflet published on the electronic medicines compendium (emc). They are not medical advice. Ask a pharmacist or your GP if you are unsure. For urgent help call NHS 111, or 999 in an emergency.

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