Trazodone Hydrochloride 150mg Film-coated Tablets – Summary of Product Characteristics (SmPC) for healthcare professionals

1 NAME OF THE MEDICINAL PRODUCT

Trazodone Hydrochloride 150mg Film-coated Tablets

2 QUALITATIVE AND QUANTITATIVE COMPOSITION

Each film-coated tablet contains 150mg trazodone hydrochloride

Excipient with known effect:

Each film-coated tablet contains:

125mg lactose monohydrate

0.63mg sodium

For the full list of excipients, see section 6.1

3 PHARMACEUTICAL FORM

Film-coated Tablets

Light pink coloured, 11.0mm round shaped, biconvex film coated tablets, break line on one side and plain on other side. The tablets can be divided into equal doses

4 CLINICAL PARTICULARS

4.1 Therapeutic indications

Relief of symptoms in all types of depression including depression accompanied by anxiety

4.2 Posology and method of administration

Depression

Adults:

Initially 150mg/day in divided doses after food or as a single dose on retiring. This may be increased up to 300mg/day in a single or divided doses. The major portion of a divided dose to be taken on retiring. The dose may be further increased to 600mg/day in divided doses in hospitalised patients.

Elderly

For very elderly or frail patients, the recommended initial starting dose is reduced to 100mg/day given in divided doses or as a single night-time dose (see section 4.4). For 50 and 100mg doses the product is available in 50 mg capsules and tablets. This may be incrementally increased, under supervision, according to efficacy and tolerance. In general, single doses above 100mg should be avoided in these patients. It is unlikely that 300mg/day will be exceeded.

Paediatric population:

Trazodone hydrochloride is not recommended for use in children below the age of 18 years due to a lack of data on safety.

Depression accompanied by anxiety

As for depression

Anxiety

75mg/day increasing to 300mg/day as necessary.

A decrease in side effects (increase of the resorption and decrease of the peak plasma concentration) can be reached by taking trazodone after a meal.

Hepatic impairment:

Trazodone undergoes extensive hepatic metabolism, see section 5.2, and has also been associated with hepatotoxicity, see sections 4.4 and 4.8. Therefore, caution should be exercised when prescribing for patients with hepatic impairment, particularly in cases of severe hepatic impairment. Periodic monitoring of liver function may be considered.

Renal impairment:

No dosage adjustment is usually necessary, but caution should be exercised when prescribing for patients with severe renal impairment (see also sections 4.4 and 5.2).

Method of administration

Oral

4.3 Contraindications

Hypersensitivity to trazodone or to any of the excipients listed in section 6.1 Alcohol intoxication and intoxication with hypnotics.

Acute myocardial infarction.

4.4 Special warnings and precautions for use

Paediatric Population

Trazodone should not be used in children and adolescents under 18 years old. Suicidal behaviour (suicidal attempt and suicidal planning) and hostility (essentially aggressiveness, opposing behaviour and anger) has been observed in a clinical study on children and adolescents treated with antidepressant more frequently than with placebo. Moreover, long term safety data on children and adolescents regarding growth, maturation and cognitive and behavioural development are not available.

Suicide/suicidal thoughts or clinical worsening

Depression is associated with an increased risk of suicidal thoughts, self-harm and suicide (suicide-related events). This risk persists until significant remission occurs. As improvement may not occur during the first few weeks or more of treatment, patients should be closely monitored until such improvement occurs. It is general clinical experience that the risk of suicide may increase in the early stages of recovery.

Other psychiatric conditions for which trazodone is prescribed can also be associated with an increased risk of suicide-related events. In addition, these conditions may be co-morbid with major depressive disorder. The same precautions observed when treating patients with major depressive disorder should therefore be observed when treating patients with other psychiatric disorders.

Patients with a history of suicide-related events, or those exhibiting a significant degree of suicidal ideation prior to commencement of treatment are known to be at greater risk of suicidal thoughts or suicide attempts, and should receive careful monitoring during treatment. A meta-analysis of placebo-controlled clinical trials of antidepressant drugs in adult patients with psychiatric disorders showed an increased risk of suicidal behaviour with antidepressants compared to placebo in patients less than 25 years old.

Close supervision of patients and in particular those at high risk should accompany drug therapy especially in early treatment and following dose changes. Patients (and caregivers of patients) should be alerted about the need to monitor for any clinical worsening, suicidal behaviour or thoughts and unusual changes in behaviour and to seek medical advice immediately if these symptoms are present.

To minimise the potential risk of suicide attempts, particularly at therapy initiation, only restricted quantities of trazodone should be prescribed at each occasion.

It is recommended that careful dosing and regular monitoring is adopted in patients with the following conditions:

• Epilepsy, specifically abrupt increases or decreases of dosage should be avoided
• Patients with hepatic or renal impairment, particularly if severe

• Patients with cardiac disease, such as angina pectoris, conduction disorders or

  AV blocks of different degree, recent myocardial infarction

• Hyperthyroidism
• Micturition disorders, such as prostate hypertrophy, although problems would not be anticipated as the anticholinergic effect of trazodone is only minor
• Acute narrow angle glaucoma, raised intra-ocular pressure, although major changes would not be anticipated due to the minor anticholinergic effect of trazodone

Hepatic Impairment

Should jaundice occur in a patient, trazodone therapy must be withdrawn.

Severe hepatic disorders with potential fatal outcome have been reported with trazodone use (see section 4.8). Patients should be instructed to report immediately signs such as asthenia, anorexia, nausea, vomiting, abdominal pain or icterus to a physician. Investigations including clinical examination and biological assessment of liver function should be undertaken immediately, and withdrawal of trazodone therapy be considered

Psychotic Disorders

Administration of antidepressants in patients with schizophrenia or other psychotic disorders may result in a possible worsening of psychotic symptoms. Paranoid thoughts may be intensified. During therapy with trazodone a depressive phase can change from a manic–depressive psychosis into a manic phase. In that case trazodone must be stopped.

Serotonin syndrome/malignant neuroleptic syndrome

Interactions in terms of serotonin syndrome/malignant neuroleptic syndrome have been described in case of concomitant use of other serotonergically acting substances like other antidepressants (eg tricyclic antidepressants, SSRI’s, SNRI’s and MAO-inhibitors) and neuroleptics. Malignant neuroleptic syndromes with fatal outcome have been reported in cases of co-administration with neuroleptics, for which this syndrome is a known possible adverse drug reaction, see sections 4.5 and 4.8 for further information.

Since agranulocytosis may clinically reveal itself with influenza-like symptoms, sore throat and fever, in these cases it is recommended to check haematology.

Hypotension, including orthostatic hypotension and syncope, has been reported to occur in patients receiving trazodone. Concomitant administration of antihypertensive therapy with trazodone may require a reduction in the dose of the antihypertensive drug.

Elderly

Elderly patients may more often experience orthostatic hypotension, somnolence and other anticholinergic effects of trazodone. Careful consideration should be given to the potential for additive effects with concomitant medication use such as with other psychotropics or antihypertensives or in the presence of risk factors such as comorbid disease, which may exacerbate these reactions. It is recommended that the patient/carer is informed of the potential for these reactions and monitored closely for such effects following initiation of therapy, prior to and following upward dose titration.

Following therapy with trazodone, particularly for a prolonged period, an incremental dosage reduction to withdrawal is recommended, to minimise the occurrence of withdrawal symptoms, characterised by nausea, headache and malaise.

There is no evidence that trazodone hydrochloride possesses any addictive properties.

QT interval prolongation

As with other antidepressant drugs, cases of QT interval prolongation have been reported with trazodone very rarely. Caution is advised when prescribing trazodone with medicinal products known to prolong QT interval. Trazodone should be used with caution in patients with known cardiovascular disease including those associated with prolongation of the QT interval.

Potent CYP3A4 inhibitors may lead to increases in trazodone serum levels. See section 4.5 for further information.

Priapism

As with other drugs with alpha-adrenolytic activity, trazodone has very rarely been associated with priapism. This may be treated with an intracavernosum injection of an alpha-adrenergic agent such as adrenaline or metaraminol. However, there are reports of trazodone-induced priapism which have required surgical intervention or led to permanent sexual dysfunction. Patients developing this suspected adverse reaction should cease trazodone immediately.

Serotonin syndrome

Concomitant administration of trazodone and buprenorphine/opioids may result in serotonin syndrome, a potentially life-threatening condition (see section 4.5)

If concomitant treatment with other serotonergic agents is clinically warranted, careful observation of the patient is advised, particularly during treatment initiation and dose increases.

Symptoms of serotonin syndrome may include mental-status changes, autonomic instability, neuromuscular abnormalities, and/or gastrointestinal symptoms.

If serotonin syndrome is suspected, a dose reduction or discontinuation of therapy should be considered depending on the severity of the symptoms.

Excipients

Trazodone hydrochloride contains lactose. Patients with rare hereditary problems of galactose intolerance, total lactase deficiency or glucose-galactose malabsorption should not take this medicine.

4.5 Interaction with other medicinal products and other forms of interaction

General

The sedative effects of antipsychotics, hypnotics, sedatives, anxiolytics, and antihistaminic drugs may be intensified; dosage reduction is recommended in such instances.

The metabolism of antidepressants is accelerated due to hepatic effects by oral contraceptives, phenytoin, carbamazepine and barbiturates. The metabolism of antidepressants is inhibited by cimetidine and some other antipsychotics. CYP3A4 inhibitors

In vitro drug metabolism studies suggest that there is a potential for drug interactions when trazodone is given with potent CYP3A4 inhibitors such as erythromycin, ketoconazole, itraconazole, ritonavir, indinavir, and nefazodone. It is likely that potent CYP3A4 inhibitors may lead to substantial increases in trazodone plasma concentrations with the potential for adverse effects. Exposure to ritonavir during initiation or resumption of treatment in patients receiving trazodone will increase the potential for excessive sedation, cardiovascular, and gastrointestinal effects. It has been confirmed in in-vivo studies in healthy volunteers, that a ritonavir dose of 200mg BID increased the plasma levels of trazodone by greater than two-fold, leading to nausea, syncope and hypotension. If trazodone is used with a potent CYP3A4 inhibitor, a lower dose of trazodone should be considered. However, the co-administration of trazodone and potent CYP3A4 inhibitors should be avoided where possible.

Carbamazepine

Carbamazepine reduced plasma concentrations of trazodone when co-administered. Concomitant use of carbamazepine 400mg daily led to a decrease of plasma concentrations of trazodone and its active metabolite m-chlorophenylpiperazine of 76% and 60%, respectively. Patients should be closely monitored to see if there is a need for an increased dose of trazodone when taken with carbamazepine.

Anaesthetics/Muscle Relaxants

Trazodone may enhance the effects of muscle relaxants and volatile anaesthetics, and caution should be exercised in such instances. Similar considerations apply to combined administration with sedative and anti-depressant drugs, including alcohol.

Alcohol

Trazodone intensifies the sedative effects of alcohol. Alcohol should be avoided during trazodone therapy. Trazodone has been well tolerated in depressed schizophrenic patients receiving standard phenothiazine therapy and also in depressed parkinsonian patients receiving therapy with levodopa. Levadopa

Antidepressants can accelerate the metabolism of levodopa. Tricyclic antidepressants:

Concurrent administration should be avoided due to the risk of interaction. Serotonin syndrome and cardiovascular side effects are possible. Fluoxetine

Rare cases have been reported of elevated trazodone plasma levels and adverse effects when trazodone had been combined with fluoxetine, a CYP1A2/2D6 inhibitor. The mechanism underlying a pharmacokinetic interaction is not fully understood. A pharmacodynamic interaction (serotonin syndrome) could not be excluded.

Monoamine Oxidase Inhibitors (MAOI)

Possible interactions with monoamine oxidase inhibitors have occasionally been reported. Although some clinicians do give both concurrently, use of trazodone with MAOIs, or within two weeks of stopping treatment with these compounds is not recommended. The giving of MAOIs within one week of stopping trazodone is also not recommended.

Phenothiazine

Severe orthostatic hypotension has been observed in case of concomitant use of phenothiazines, like eg chlorpromazine, fluphenazine, levomepromazine, perphenazine.

Serotonin syndrome

Trazodone should be used cautiously when co-administered with:

• Buprenorphine/opioids, as the risk of serotonin syndrome, a potentially life-threatening condition, is increased (see section 4.4).

Other

Concomitant use of trazodone with drugs known to prolong the QT interval may increase the risk of ventricular arrhythmias, including torsade de pointes. Caution should be used when these drugs are co-administered with trazodone. Since trazodone is only a very weak inhibitor of noradrenaline re-uptake and does not modify the blood pressure response to tyramine, interference with the hypotensive action of guanethidine-like compounds is unlikely. However, studies in laboratory animals suggest that trazodone may inhibit most of the acute actions of clonidine. In the case of other types of antihypertensive drug, although no clinical interactions have been reported, the possibility of potentiation should be considered.

St John’s Wort

Undesirable effects may be more frequent when trazodone is administered together with preparations containing Hypericum perforatum (St John’s Wort). Warfarin

There have been reports of changes in prothrombin time in patients concomitantly receiving trazodone and warfarin.

Phenytoin and Digoxin

Concurrent use with trazodone may result in elevated serum levels of digoxin or phenytoin. Monitoring of serum levels should be considered in these patients.

4.6 Fertility, pregnancy and lactation

Pregnancy

Trazodone should only be administered during pregnancy if considered essential by the physician.

Data on a limited number (< 200) of exposed pregnancies indicate no adverse effects of trazodone hydrochloride on pregnancy or on the health of the foetus/newborn child. To date, no other relevant epidemiological data are available. The safety of trazodone hydrochloride in human pregnancy has not been established. Animal studies do not indicate direct or indirect harmful effects with respect to pregnancy, embryonal/foetal development, parturition or postnatal development at therapeutic doses. On basic principles, therefore, its use during the first trimester should be avoided.

When trazodone hydrochloride is used until delivery, newborns should be monitored for the occurrence of withdrawal symptoms.

Breastfeeding

Limited data indicate that excretion of trazodone hydrochloride in human breast milk is low, but levels of the active metabolite are not known. Due to the paucity of data, a decision on whether to continue/discontinue breast feeding or to continue/discontinue therapy with trazodone hydrochloride should be made taking into account the benefit of breast feeding to the child and the benefit of trazodone hydrochloride therapy to the woman.

4.7 Effects on ability to drive and use machines

Trazodone has minor or moderate influence on the ability to drive and use machines. As with all other drugs acting on the central nervous system, patients should be cautioned against the risks of driving or operating machinery until they are sure they are not affected by drowsiness, sedation, dizziness, confusional states or blurred vision

4.8 Undesirable effects

Cases of suicidal ideation and suicidal behaviours have been reported during trazodone therapy or early after treatment discontinuation (see section 4.4). Trazodone has had no effect on arterial blood pCO2 or pO2 levels in patients with severe respiratory insufficiency due to chronic bronchial or pulmonary disease.

The following symptoms, some of which are commonly reported in cases of untreated depression, have also been recorded in patients receiving trazodone therapy.

¹ Fluid and electrolyte status should be monitored in symptomatic patients ²See also Section 4.4

³ Trazodone is a sedative antidepressant and drowsiness, sometimes experienced during the first days of treatment, usually disappears on continued therapy ⁴ Studies in animals have shown that trazodone is less cardiotoxic than the tricyclic antidepressants, and clinical studies suggest that the drug may be less likely to cause cardiac arrhythmias in man. Clinical studies in patients with pre-existing cardiac disease indicate that trazodone may be arrhythmogenic in some patients in that population

⁵Adverse effects on hepatic function, sometimes severe, have been rarely reported. Should such effects occur, trazodone should be immediately discontinued

⁶See also 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 the Yellow card Scheme at: www.mhra.gov.uk/yellowcard or search for MHRA Yellow Card in the Google Play or Apple App Store.

4.9 Overdose

Symptoms

The most frequently reported reactions to overdose have included drowsiness, dizziness, nausea and vomiting. In more serious cases coma, tachycardia, hypotension, hyponatraemia, convulsions and respiratory failure have been reported. Cardiac features may include bradycardia, QT prolongation and torsade de pointes. Symptoms may appear 24 hours or more after overdose. Overdoses of trazodone in combination with other antidepressants may cause serotonin syndrome.

Management

There is no specific antidote to trazodone. Activated charcoal should be considered in adults who have ingested more than 1g trazodone, or in children who have ingested more than 150mg trazodone within 1 hour of presentation. Alternatively, in adults, gastric lavage may be considered within 1 hour of ingestion of a potentially life-threatening overdose.

Observe for at least 6 hours after ingestion (or 12 hours if a sustained release preparation has been taken). Monitor BP, pulse and Glasgow Coma Scale (GCS). Monitor oxygen saturation if GCS is reduced. Cardiac monitoring is appropriate in symptomatic patients.

Single brief convulsions do not require treatment. Control frequent or prolonged convulsions with intravenous diazepam (0.1-0.3mg/kg body weight) or lorazepam (4mg in an adult and 0.05mg/kg in a child). If these measures do not control the fits, an intravenous infusion of phenytoin may be useful. Give oxygen and correct acid base and metabolic disturbances as required. Treatment should be symptomatic and supportive in the case of hypotension and excessive sedation. If severe hypotension persists consider use of inotropes, eg dopamine or dobutamine.

5 PHARMACOLOGICAL PROPERTIES

5.1 Pharmacodynamic properties

Pharmacotherapeutic group: Other antidepressants ATC code: N06A X05 Trazodone is a potent antidepressant. It also has anxiety reducing activity. Trazodone is a triazolopyridine derivative chemically unrelated to known tricyclic, tetracyclic and other antidepressant agents. It has negligible effect on noradrenaline re-uptake mechanisms. Whilst the mode of action of trazodone is not known precisely, its antidepressant activity may concern noradrenergic potentiation by mechanisms other than uptake blockade. A central antiserotonin effect may account for the drug’s anxiety reducing properties.

5.2 Pharmacokinetic properties

Absorption

Trazodone is rapidly absorbed from the gastrointestinal tract and extensively metabolised. Paths of metabolism of trazodone include n-oxidation and hydroxylation. The metabolic m-chlorophenylpiperazine is active. Trazodone is excreted in the urine almost entirely in the form of its metabolites, either in free or in conjugated form. The elimination of trazodone is biphasic, with a terminal elimination half-life of 5 to 13 hours. Trazodone is excreted in breast milk.

Biotransformation

In vitro studies in human liver microsomes show that trazodone is metabolised by cytochrome P4503A4 (CYP3A4) to form m-chlorophenylpiperazine. Whilst significant, the role of this pathway in the total clearance of trazodone in vivo has not been fully determined.

Elimination

There was an approximate two-fold increase in terminal phase half-life and significantly higher plasma concentrations of trazodone in 10 subjects aged 65 to 74 years compared with 12 subjects aged 23 to 30 years following a 100mg dose of trazodone. It was suggested that there is an age-related reduction in the hepatic metabolism of trazodone.

5.3 Preclinical safety data

Non-clinical data reveal no special hazard for humans based on conventional studies of safety pharmacology, repeated dose toxicity, carcinogenic potential and toxicity to reproduction.

6 PHARMACEUTICAL PARTICULARS

6.1 List of excipients

Tablet Core

Maize starch

Lactose monohydrate

Povidone

Calcium hydrogen phosphate

Microcrystalline cellulose

Sodium starch glycolate

Magnesium Stearate

Film-coating

Opadry II Pink containing:

Polyvinyl alcohol

Titanium dioxide E171

Macrogol 400

Talc

Iron red oxide E172

6.2 Incompatibilities

Not applicable

6.3 Shelf life

3 years

6.4 Special precautions for storage

This medicinal product does not require any special storage conditions

6.5 Nature and contents of container

Aluminium-PVC blister

Pack sizes: 10, 28, 30, 56, 84 and 100 tablets

Not all pack sizes may be marketed

6.6 Special precautions for disposal

No special requirements

Any unused medicinal product or waste material should be disposed of in accordance with local requirements

7 MARKETING AUTHORISATION HOLDER

Tillomed Laboratories Limited

220 Butterfield

Great Marlings

Luton

LU2 8DL

United Kingdom

8 MARKETING AUTHORISATION NUMBER(S)

PL 11311/0839

9 DATE OF FIRST AUTHORISATION/RENEWAL OF THE

AUTHORISATION

07/05/2025

10 DATE OF REVISION OF THE TEXT

22/04/2026