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Citywest Business Campus, Dublin 24, Ireland
Telephone: +353 1 4035600
Fax: +353 1 4035687
Medical Information e-mail: iemedinfo@sanofi.com

Summary of Product Characteristics last updated on medicines.ie: 12/10/2017
SPC Nozinan 25mg/ml Solution for Injection/Infusion

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Nozinan 25mg/ml Solution for Injection/Infusion.

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Each 1ml contains 25 mg of Levomepromazine Hydrochloride.

Each 1ml also contains 0.5mg sodium sulphite and total sodium 2.7mg.

For a full list of excipients, see section 6.1.

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Solution for Injection/Infusion.

Clear, bright pale yellow solution.

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4.1 Therapeutic indications

In the management of schizophrenia and other major psychoses including mania and hypomania.

As an adjunct in the relief of severe terminal pain with accompanying anxiety, restlessness or distress.

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4.2 Posology and method of administration

Route of administration:

Intramuscular, Intravenous or Continuous subcutaneous Use.

Recommended Dosage:

Dosage varies with the condition and the individual response of the patient.


The usual daily dosage is 12.5 - 25 mg (0.5-1ml) by intramuscular injection or by the intravenous route after dilution with an equal volume of normal saline immediately before use. In cases of severe agitation, up to 50 mg (2ml) may be used, repeated every six to eight hours.

Continuous subcutaneous infusion:

Nozinan may be administered over a 24-hour period via a syringe driver. The required dose of Nozinan (25-200 mg per day) should be diluted with the calculated volume of normal saline. Diamorphine hydrochloride is compatible with this solution and may be added if greater analgesia is required.


No specific dosage recommendations.

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4.3 Contraindications

Hypersensitivity to Levompromazine or any of the other ingredients.

Patients with coma particularly if associated with other central nervous system depressants.

Risk of closed angle glaucoma.

Risk of urinary retention related to urethroprostatic disorders.

History of agranulocytosis.

Dopaminergic agonists.

Use in patients on concurrent therapy with other drugs potentially haemotoxic.

Use in nursing mothers.

Alcohol potentiates sedative effects induced by neuroleptic drugs. Patients should not consume alcoholic beverages or take medicines containing alcohol.

Levodopa: mutual antagonism between levodopa and neuroleptics.

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4.4 Special warnings and precautions for use

If patients experience fever, sore throat or any other infection, they should inform their physician, and undergo a complete blood count. Treatment should be discontinued if any marked changes are observed (hyperleucocytosis, granulocytopenia).

Phenothiazines should only be used with great caution in patients with a history of jaundice or with existent liver dysfunction or blood dyscrasias.

Patients receiving phenothiazines over a prolonged period require regular and careful surveillance with particular attention to potential for inducing eye changes, effects on haemopoiesis, liver dysfunction, myocardial conduction effects, particularly if other concurrently administered drugs also have potential effects on these systems.

Use of phenothiazines at high (relative or absolute) doses may induce extrapyramidal side effects, dyskinesia, akathisia, dystonia. These are likely to be particularly severe in children.

Prolonged administration of any phenothiazines may result in persistent or tardive dyskinesias, particularly in the elderly.

In common with other anti-psychotics levomepromazine has been associated with persistent dyskinesia. Tardive dyskinesia may develop in some patients on long term therapy, possibly in relation to total cumulative dose, or may develop after drug therapy has been discontinued. The risk is reported to be greater in elderly patients on high-dose therapy.

Characteristic symptoms are rhythmical involuntary movements of the tongue, face, mouth or jaw sometimes accompanied by involuntary movements of the extremities. They may persist for many months or even years and, while they gradually disappear in some patients, they appear to be permanent in others.

At first signs of tardive dyskinesia which may be orofacial dyskinesia the benefit of continued treatment should be carefully assessed against the risk of the development of persistent dyskinesia. Withdrawal of treatment with careful observation of the dyskinesia and psychotic condition has been suggested in order to assess the need for continued neuroleptic therapy and to reveal persisting dyskinesia. Should it be necessary to reinstate treatment, the anti-psychotic agent may mask the syndrome. Anti-parkinsonian agents have proved of little value in this syndrome.

Phenothiazines should be used with particular care in the presence of extremes of temperature because of its capacity to interfere with the body's thermoregulation.

Phenothiazines should only be used with great caution in patients with coronary insufficiency or cardiovascular disorders which may predispose to prolongation of the QT interval.

Neuroleptic malignant syndrome:

If unexplained fever occurs, treatment should be discontinued since this may be one of the symptoms of the malignant syndrome reported with neuroleptic drugs (pallor, hyperthermia, autonomic disorders, consciousness disorders, muscle rigidity). Signs of autonomic dysfunction, such as sweating and irregular pulse or blood pressure, may precede the onset of hyperthermia and thus constitute early warning signs.

Although this effect of neuroleptics may be idiosyncratic in origin, there may be predisposing risk factors, such as dehydration and organic brain damage.

Prolonged QT Interval:

Levomepromazine hydrochloride prolongs the QT interval dose-dependently. This effect, which is known to potentiate the risk of onset of serious ventricular arrhythmias of the torsades de pointes type, which is potentially fatal (sudden death), is exacerbated in the presence of bradycardia, hypokalaemia, and congenital or acquired QT prolongation (combination with a drug inducing QT interval prolongation). Consequently, if the clinical situation permits, absence of the following risk factors for onset of this type of arrhythmia should always be verified prior to use;

- bradycardia of less than 55 beats per minute

- electrolyte imbalance in particular hypokalaemia

- congenital QT interval prolongation

- ongoing treatment with a drug liable to induce marked bradycardia, hypokalaemia, delayed intracardiac conduction or QT interval prolongation.

Except in emergencies, it is recommended that an ECG be performed as part of the initial evaluation of patients due to receive treatment with a neuroleptic agent.

Except in special cases, this drug should not be administered to patients with Parkinson's disease.

The onset of paralytic ileus, which may be manifested by distension and abdominal pain, should be treated as an emergency.

Avoid concomitant prescription of other antipsychotics.

The hypotensive effects of Nozinan should be taken into account when administered to patients with cardiac disease and the elderly or debilitated. Patients receiving large initial doses should be kept in bed.

Monitoring of treatment with levomepromazine must be intensified in the following cases:

• Epileptic patients, as levomepromazine may lower the seizure threshold (see Section 4.8) and should be used with caution in epileptic patients. Treatment must be discontinued if seizures occur.

• Elderly patients with:

greater susceptibility to postural hypotension, sedation and extrapyramidal effects,

chronic constipation (risk of paralytic ileus),

possible prostatic hypertrophy

• Patients with certain cardiovascular diseases, due to the quinidine-like, tachycardia-inducing and hypotensive effects of this product class.

• Patients with severe hepatic and/or renal insufficiency, due to the risk of accumulation.

Patients are strongly advised not to consume alcohol or to take medicines containing alcohol during treatment.

Patients should remain lying down for at least one hour after injection due to the risk of hypotension.

This medicinal product contains less than 1mmol of sodium dose i.e. essentially 'sodium-free'.

Stroke: In randomized clinical trials versus placebo performed in a population of elderly patients with dementia and treated with certain atypical antipsychotic drugs, a 3-fold increase of the risk of cerebrovascular events has been observed. The mechanism of such risk increase is not known. An increase in the risk with other antipsychotic drugs or other populations of patients cannot be excluded. Nozinan should be used with caution in patients with stroke risk factors.

Elderly Patients with Dementia:

Elderly patients with dementia-related psychosis treated with antipsychotic drugs are at an increased risk of death. Although the cause of death in clinical trials with atypical antipsychotics were varied, most of the deaths appeared to be either cardiovascular (e.g. heart failure, sudden death) or infectious (e.g. pneumonia) in nature. Observational studies suggest that, similar to atypical antipsychotic drugs, treatment with conventional antipsychotic drugs may increase mortality. The extent to which the findings of increased mortality in observational studies may be attributed to the antipsychotic drug as opposed to some characteristic(s) of the patients is not clear.

Cases of venous thromboembolism, sometimes fatal, have been reported with antipsychotic drugs. Therefore, Nozinan should be used with caution in patients with risk factors for thromboembolism (See also Section 4.8 Undesirable Effects).

Hyperglycaemia or intolerance to glucose has been reported in patients treated with Nozinan. Patients with an established diagnosis of diabetes mellitus or with risk factors for the development of diabetes who are started on Nozinan, should get appropriate glycaemic monitoring during treatment (See Section 4.8).

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4.5 Interaction with other medicinal products and other forms of interaction

Contraindicated combinations:

Dopaminergic agonists (amatadine, apomorphine, bromocriptine, cabergoline, entacapone, lisuride, pergolide, piribedil, pramipexole, quinagolide, ropinirole) except in patients with Parkinson's disease: mutual antagonism between dopaminergic agonists and neuroleptics. Neuroleptic-induced extrapyramidal syndrome should be treated with an anticholinergic agent rather than a dopaminergic agonist.

Drugs that may induce torsades de pointes (sultopride, benzamide neuroleptic): increased risk of ventricular arrhythmias, particularly torsades de pointes.

Inadvisable combinations:

Alcohol: potentiation of sedative effects induced by neuroleptic drugs. Impaired alertness may make driving vehicles and using machines dangerous.

Patients should not consume alcoholic beverages or take medicines containing alcohol.

Levodopa: mutual antagonism between levodopa and neuroleptics. In patients with Parkinson's disease, minimum effective doses of each of these drugs should be used.

Dopaminergic agonists (amantadine, apomorphine, bromocriptine, cabergoline, entacapone, lisuride, pergolide, piribedil, pramipexole, quinagolide, ropinirole) in patients with Parkinson's disease: mutual antagonism between dopaminergic agonists and neuroleptics. Dopaminergic agonists may cause or exacerbate psychotic disorders. If treatment with neuroleptics is required in patients with Parkinson's disease treated with dopaminergic agonists, the latter should be tapered off gradually (sudden discontinuation of dopaminergic agents exposes the patient to a risk of 'neuroleptic malignant syndrome'.

Drugs that may induce torsades de pointes: class Ia anti-arrhythmics (quinidine, hydroquinidine, disopyramide); class III anti-arrhythmics (amiodarone, dofetilide, ibutilide, sotalol); certain neuroleptics: phenothiazines (chlorpromazine, cyamemazine, thioridazine), benzamides (amisulpride, sulpiride, tiapride), butyrophenones (droperidol, haloperidol), other neuroleptics (pimozide); and others such as : bepridil, cisapride, diphenmanil, erythromycin IV, mizolastine, vincamine IV: increased risk of ventricular arrhythmias, particularly torsades de pointes.

Other medications that may cause torsades de pointes (halofantrine, moxifloxacin, pentamidine, sparfloxacin): increased risk of ventricular arrhythmias, particularly torsades de pointes. If possible, discontinue the non-anti-infective torsadogenic drug. If co-administration cannot be avoided, prior monitoring of the QT interval and ECG should be performed.

Combinations requiring precautions:

Topical agents for gastro-intestinal use (magnesium, aluminium and calcium salts, oxides and hydroxides): decreased gastro-intestinal absorption of phenothiazine neuroleptics. Allow for an interval between administration of topical gastrointestinal agents and phenophiazine neuroleptic agents (more than 2 hours apart, if possible).

Bradycardia-inducing medications (bradycardia-inducing calcium antagonists: diltiazem, verapamil; beta-blockers (except sotalol); clonidine: guanfacine; digitalis products): increased risk of ventricular arrhythmias, particularly torsades de pointes. Clinical and electrocardiographic monitoring.

Potassium lowering drugs (potassium-lowering diuretics, stimulant laxatives, amphotericin B (IV route), glucocorticoids, tetracosactide): increased risk of ventricular arrhythmias, particularly torsades de pointes. Clinical, electrolyte and electrocardiographic monitoring.

Cytochrome P450 2D6 Metabolism: Levomepromazine and its non-hydroxylated metabolites are reported to be inhibitors of cytochrome P450 2D6 (CYP2D6). There is a possible pharmacokinetic interaction between inhibitors of CYP2D6, such as phenothiazines, and CYP2D6 substrates. Co-administration of levomepromazine and drugs primarily metabolized by the CYP2D6 enzyme system may result in increased plasma concentrations of these drugs. Monitor patients for dose-dependent adverse reactions associated with CYP2D6 substrates such as amitriptyline/amitriptylinoxide.

Combinations to be taken into consideration:

Antihypertensive agents: enhanced antihypertensive effect and higher risk of postural hypotension (cumulative effects). For guanethidine, see below.

Atropine and atropine-like substances: imipramine antidepressants, anticholinergic H1-antihistamines, anticholinergic antiparkinsonian agents, atropine-like antispasmodics, disopyramide): cumulative adverse effects related to atropine-like substances such as urinary retention, constipation, dry mouth, etc.

Guanethidine: inhibition of the antihypertensive effect of guanethidine (inhibition of guanethidine uptake into sympathetic fibre, its site of action).

Other central nervous system depressants: morphine derivatives (analgesics, antitussives and replacement therapies); barbiturates; benzodiazepines; non-benzodiazepine anxiolytics (carbamates, captodiam, etifoxine); hypnotics; sedative antidepressants; sedative H1-antihistamines; centrally acting antihypertensive agents; baclofen; thalidomide: enhanced central nervous system depression. Impaired alertness may be hazardous for driving and operating machines.

The injection is incompatible with alkaline solutions. Diamorphine hydrochloride is compatible with the solution if required.

4.6 Fertility, pregnancy and lactation


In humans, the teratogenic risk of levomepromazine has not been evaluated. Different prospective epidemiological studies conducted with other phenothiazines have yielded contradictory results regarding teratogenic risk. Nozinan is not recommended during pregnancy and in women of childbearing potential not using contraception.

Phenothiazines should only be used during pregnancy if it is considered essential by the physician. The drug crosses the placenta and is excreted at high levels in breast milk. Animal studies indicate a teratogenic effect. Neonates exposed to antipsychotics (including Nozinan) during the third trimester of pregnancy are at risk of adverse reactions including extrapyramidal and/or withdrawal symptoms that may vary in severity and duration following delivery.

There have been reports of agitation, hypertonia, hypotonia, tremor, somnolence, respiratory distress, bradycardia, tachycardia, feeding disorder, meconium ileus, delayed meconium passage, abdominal bloating.

Consequently, newborns should be monitored carefully in order to plan appropriate treatment.


Levomepromazine is excreted in breast milk in low amounts in human milk. A risk to the suckling child cannot be excluded.


In humans, because of the interaction with dopamine receptors, levomepromazine may cause hyperprolactinaemia which can be associated with impaired fertility in women. Some data suggest that levomepromazine treatment is associated with impaired fertility in men.

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4.7 Effects on ability to drive and use machines

Phenothiazines may induce drowsiness. Persons taking these drugs should not drive or operate machinery unless the drug has been shown not to interfere with physical or mental ability.

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4.8 Undesirable effects

The following CIOMS frequency rating is used, when applicable:

Very common ≥ 10%; Common ≥ 1 and < 10%; Uncommon ≥ 0.1 and < 1%; Rare ≥ 0.01 and < 0.1%; Very rare < 0.01%; Not known (cannot be estimated from available data).

There have been isolated reports of sudden death with possible causes of cardiac origin (see also Section 4.4 Special Warnings and Precautions for Use), as well as cases of unexplained sudden death, in patients receiving neuroleptic phenothiazines.

Metabolism and nutrition disorders

Not known: Hyponatraemia (see Section 4.4 Special warnings and special precautions for use), ADH inappropriate secretion

Psychiatric Disorders

Not known: Confusional states, delirium

Nervous system disorders

Uncommon: Convulsions

Vascular Disorders

Cases of venous thromboembolism (uncommon), including cases of pulmonary embolism (not known) sometimes fatal, and cases of deep vein thrombosis (not known) have been reported with antipsychotic drugs (see also Section 4.4 Special Warnings and Precautions for Use).

Gastrointestinal Disorders

Not known: Necrotizing enterocolitis, which can be fatal, has been reported in patients treated with levomepromazine.

Hepatobiliary disorders

Not known: Hepatocellular, cholestatic and mixed liver injury

Reproductive System and Breast Disorders

Not known: Priapism

Starting at low doses:

Autonomic disturbances:

• Postural hypotension

• Anticholinergic effects such as dry mouth, accommodation disorders, risk of urinary retention, constipation and even paralytic ileus.

• Sedation or drowsiness, particularly at the start of treatment.

Neuropsychiatric disorders:

• Indifference, anxiety reactions, mood changes.

At higher doses:

• Early-onset dyskinesa (spasmodic torticollis, oculogyric crises, trismus, etc).

• Extrapyramidal syndrome:

- akinetic symptoms with or without hypertonia, partially relieved by anticholinergic antiparkinsonian agents

- hyperkinetic-hypertonic symptoms with excitatory motor behavioural activity

• Tardive dyskinesia, particularly during long-term treatment. Tardive dyskinesia may occur after the neuroleptic agent is withdrawn and resolve after rechallenge or if the dose is increased. Anticholinergic antiparkinsonian agents have no effect and may cause exacerbation.

Endocrine and metabolic reactions:

• Hyperprolactinemia: amenorrhea, galactorrhea, gynecomastia, impotence, frigidity.

• Alteration in temperature regulation.

• Weight gain.

• Hyperglycemia, alteration in glucose tolerance.

Non-dose-dependent and more rarely reported:

Skin disorders:

• Allergic skin reactions

• Photosensitisation.

Haematological disorders:

• Leukopenia.

• Very rare cases of agranulocytosis: periodic CBC monitoring is recommended.

• Treatment should be discontinued if any marked changes (hyperleucocytosis, granulocytopenia) are observed in the blood count.

Opthalmological disorders:

• Brownish deposits in the anterior eye segment, due to product accumulation, generally without effect on vision.

Other disorders observed:

• Positive titre for antinuclear antibodies in the absence of clinical lupus erythematosus.

• Possibility of cholestatic jaundice.

Neuroleptic malignant syndrome:

The syndrome may occur with the use of any neuroleptic agent. Symptoms include clouding of consciousness, rigidity and other extrapyramidal effects, and autonomic dysfunction, most importantly hyperpyrexia. Treatment involves the immediate cessation of neuroleptic therapy and symptomatic management as appropriate.

Because of the sodium sulphite content there is a risk of allergic reactions, including anaphylactic reactions and bronchospasm.

Pregnancy, puerperium and perinatal conditions:

Drug withdrawal syndrome neonatal (see 4.6) - frequency not known.

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 HPRA Pharmacovigilance, Earlsfort Terrace, IRL - Dublin 2; Tel: +353 1 6764971; Fax: +353 1 6762517. Website: www.hpra.ie; E-mail: medsafety@hpra.ie.

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4.9 Overdose

Extremely serious Parkinsonian syndrome, coma

Symptomatic treatment, continuous monitoring of respiratory and cardiac functions (risk of QT interval prolongation) should be maintained until the patient recovers.

Symptoms of levomepromazine overdosage include drowsiness or loss of consciousness, hypotension, tachycardia, E.C.G. changes, ventricular arrhythmias, convulsions and hypothermia. Severe extra-pyramidal dyskinesias may occur.

If the patient is seen sufficiently soon (up to 6 hours) after ingestion of a toxic dose, gastric lavage may be attempted. Pharmacological induction of emisis is unlikely to be of any use. Activated charcoal should be given. There is no specific antidote. Treatment is supportive.

Generalised vasodilatation may result in circulatory collapse; raising the patients legs may suffice, in severe cases, volume expansion by intravenous fluids may be needed; infusion fluids should be warmed before administration in order not to aggravate hypothermia.

Positive inotropic agents such as dopamine may be tried if fluid replacement is insufficient to correct the circulatory collapse. Peripheral vasoconstrictor agents are not generally recommended; avoid the use of adrenaline.

Ventricular or superventricular tachy-arrhythmias usually respond to restoration of normal body temperature and correction of circulatory or metabolic disturbances. If persistent or life threatening, appropriate anti-arrhythmic therapy may be considered. Avoid lignocaine and, as far as possible, long acting anti-arrhythmic drugs.

Pronounced central nervous system depression requires airway maintenance or, in extreme circumstances, assisted respiration. Severe dystonic reactions usually respond to procyclidine (5-10 mg) or orphenadrine (20-40 mg) administered intramuscularly or intravenously. Convulsions should be treated with intravenous diazepam. Neuroleptic malignant syndrome should be treated with cooling. Dantroline sodium may be tried.

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5.1 Pharmacodynamic properties

Levomepromazine is a neuroleptic antipsychotic, aliphatic chain phenothiazine (N: central nervous system). Neuroleptic antipsychotics have antidopaminergic properties which are responsible for:

• The desired antipsychotic therapeutic effect

• The side effects (extrapyramidal syndrome, dyskinesia, Hyperprolactinaemia

Levomepromazine has moderate antidopaminergic activity, low antipsychotic activity and very moderate extrapyramidal effects. It resembles chlorpromazine and promethazine in the pattern of its pharmacology. It possesses anti-cholinergic, anti-histamine and anti-adrenaline activity and exhibits a strong sedative effect.

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5.2 Pharmacokinetic properties

Peak plasma concentrations are reached on average 30-90 minutes after intramuscular injection. The half-life of Levomepromazine shows marked inter-individual variability (15 to 80 hours). Metabolites include sulfoxide derivatives and an active demethylated derivative. It is eliminated via urine and faeces.

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5.3 Preclinical safety data


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6.1 List of excipient(s)

Ascorbic Acid

Sodium sulphite anhydrous (E221)

Sodium chloride

Water for injections

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6.2 Incompatibilities

Incompatible with alkaline solutions.

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6.3 Shelf life

Unopened: 36 months.

Once opened, use immediately and discard any unused contents.

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6.4 Special precautions for storage

Do not store above 25°C. Keep ampoule in the outer carton.

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6.5 Nature and contents of container

Outer carton containing 10 glass ampoules of 2ml capacity containing 1ml of product.

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6.6 Special precautions for disposal and other handling

Nozinan injection may be diluted with an equal volume of normal saline immediately before use. Diamorphine hydrochloride is compatible with this solution and may be added if greater analgesia is required. Diluted solutions are for single use and should be used immediately after preparation.

Discoloured solutions should not be used.

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sanofi-aventis Ireland Ltd., T/A SANOFI

Citywest Business Campus

Dublin 24.

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PA 540/115/1

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21st January 1983/ 4th June 2006

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October 2017

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Active Ingredients

   levomepromazine hydrochloride