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Does Stelazine (trifluoperazine) cause side effects?
Stelazine is one of the older, first-generation antipsychotic medications. Although the exact mechanism of antipsychotics is unknown, scientists believe they may work by blocking the action of dopamine in the brain. Dopamine is a neurotransmitter (chemical) that nerves use to communicate with one another.
Stelazine is used when patients do not respond to other antipsychotics. The brand name Stelazine is discontinued, but generic versions may be available.
Common side effects of Stelazine include:
- extrapyramidal side effects (such as abnormal muscle contractions, difficulty breathing and swallowing, and neck spasms),
- low blood pressure,
- dry mouth,
- blurred vision,
- urinary retention,
- worsening of glaucoma, and
- increased or decreased blood glucose.
Serious side effects of Stelazine include:
Stelazine should be used with caution with medications that depress the central nervous system and cause sedation or drowsiness such as
Such combinations can cause
- excessive sedation,
- speech impairment, and in severe cases
- coma or death.
Combining alcohol with Stelazine also increases the risk of low blood pressure.
Use of Stelazine during pregnancy has not been adequately studied. Neonates exposed to antipsychotics during the third trimester of pregnancy are at risk for extrapyramidal and withdrawal symptoms after birth. Symptoms reported included:
What are the important side effects of trifluoperazine?
Trifluoperazine causes extrapyramidal side effects such as:
- Abnormal muscle contractions
- Difficulty breathing and swallowing
- Neck spasms
- Other side effects include:
- Low blood pressure
- Dry mouth
- Blurred vision
- Urinary retention
- Worsening of glaucoma
- Increased or decreased blood glucose
Tardive dyskinesia and neuroleptic malignant syndrome can result from trifluoperazine treatment. These side effects can be severe enough that patients must seek medical help. Neuroleptic malignant syndrome is a medical emergency.
Stelazine (trifluoperazine) side effects list for healthcare professionals
Side effects of Stelazine include
- skin reactions,
- dry mouth,
- muscular weakness,
- blurred vision and
- neuromuscular (extrapyramidal) reactions.
Neuromuscular (Extrapyramidal) Reactions
- These symptoms are seen in a significant number of hospitalized mental patients. They may be characterized by motor restlessness, be of the dystonic type, or they may resemble parkinsonism.
- Depending on the severity of symptoms, dosage should be reduced or discontinued. If therapy is reinstituted, it should be at a lower dosage.
- Should these symptoms occur in children or pregnant patients, the drug should be stopped and not reinstituted. In most cases barbiturates by suitable route of administration will suffice. (Or, injectable Benadryl may be useful.)
- In more severe cases, the administration of an anti-parkinsonism agent, except levodopa (see PDR), usually produces rapid reversal of symptoms. Suitable supportive measures such as maintaining a clear airway and adequate hydration should be employed.
Motor Restlessness: Symptoms may include agitation or jitteriness and sometimes insomnia. These symptoms often disappear spontaneously. At times these symptoms may be similar to the original neurotic or psychotic symptoms. Dosage should not be increased until these side effects have subsided.
If this phase becomes too troublesome, the symptoms can usually be controlled by a reduction of dosage or change of drug. Treatment with anti-parkinsonian agents, benzodiazepines or propranolol may be helpful.
Dystonias: Symptoms may include: spasm of the neck muscles, sometimes progressing to torticollis; extensor rigidity of back muscles, sometimes progressing to opisthotonos; carpopedal spasm, trismus, swallowing difficulty, oculogyric crisis and protrusion of the tongue.
These usually subside within a few hours, and almost always within 24 to 48 hours, after the drug has been discontinued.
In mild cases, reassurance or a barbiturate is often sufficient.
In moderate cases, barbiturates will usually bring rapid relief.
In more severe adult cases, the administration of an anti-parkinsonism agent, except levodopa (see PDR), usually produces rapid reversal of symptoms. Also, intravenous caffeine with sodium benzoate seems to be effective.
In children, reassurance and barbiturates will usually control symptoms. (Or, injectable Benadryl may be useful.)
Note: See Benadryl prescribing information for appropriate children's dosage. If appropriate treatment with anti-parkinsonism agents or Benadryl fails to reverse the signs and symptoms, the diagnosis should be reevaluated.
Pseudo-parkinsonism: Symptoms may include:
Reassurance and sedation are important. In most cases these symptoms are readily controlled when an anti-parkinsonism agent is administered concomitantly. Anti-parkinsonism agents should be used only when required.
Generally, therapy of a few weeks to 2 to 3 months will suffice. After this time patients should be evaluated to determine their need for continued treatment.
(Note: Levodopa has not been found effective in pseudo-parkinsonism.) Occasionally it is necessary to lower the dosage of Stelazine (trifluoperazine HCl) or to discontinue the drug.
Tardive Dyskinesia: As with all antipsychotic agents, tardive dyskinesia may appear in some patients on long-term therapy or may appear after drug therapy has been discontinued. The syndrome can also develop, although much less frequently, after relatively brief treatment periods at low doses. This syndrome appears in all age groups.
- Although its prevalence appears to be highest among elderly patients, especially elderly women, it is impossible to rely upon prevalence estimates to predict at the inception of antipsychotic treatment which patients are likely to develop the syndrome. The symptoms are persistent and in some patients appear to be irreversible.
- The syndrome is characterized by rhythmical involuntary movements of the tongue, face, mouth or jaw (e.g., protrusion of tongue, puffing of cheeks, puckering of mouth, chewing movements). Sometimes these may be accompanied by involuntary movements of extremities.
- In rare instances, these involuntary movements of the extremities are the only manifestations of tardive dyskinesia. A variant of tardive dyskinesia, tardive dystonia, has also been described.
- There is no known effective treatment for tardive dyskinesia; anti-parkinsonism agents do not alleviate the symptoms of this syndrome. If clinically feasible, it is suggested that all antipsychotic agents be discontinued if these symptoms appear.
- Should it be necessary to reinstitute treatment, or increase the dosage of the agent, or switch to a different antipsychotic agent, the syndrome may be masked.
- It has been reported that fine vermicular movements of the tongue may be an early sign of the syndrome and if the medication is stopped at that time the syndrome may not develop.
Adverse Reactions Reported with Stelazine (trifluoperazine HCl) or Other Phenothiazine Derivatives: Adverse effects with different phenothiazines vary in type, frequency, and mechanism of occurrence, i.e., some are dose-related, while others involve individual patient sensitivity.
Some adverse effects may be more likely to occur, or occur with greater intensity, in patients with special medical problems, e.g., patients with mitral insufficiency or pheochromocytoma have experienced severe hypotension following recommended doses of certain phenothiazines.
Neuroleptic Malignant Syndrome (NMS) has been reported in association with antipsychotic drugs.
Not all of the following adverse reactions have been observed with every phenothiazine derivative, but they have been reported with one or more and should be borne in mind when drugs of this class are administered:
- extrapyramidal symptoms (opisthotonos, oculogyric crisis, hyperreflexia, dystonia, akathisia, dyskinesia, parkinsonism) some of which have lasted months and even years-particularly in elderly patients with previous brain damage; grand mal and petit mal convulsions, particularly in patients with EEG abnormalities or history of such disorders;
- altered cerebrospinal fluid proteins;
- cerebral edema;
- intensification and prolongation of the action of central nervous system depressants (opiates, analgesics, antihistamines, barbiturates, alcohol), atropine, heat, organophosphorus insecticides;
- autonomic reactions (dryness of mouth, nasal congestion, headache, nausea, constipation, obstipation, adynamic ileus, ejaculatory disorders/impotence, priapism, atonic colon, urinary retention, miosis and mydriasis);
- reactivation of psychotic processes;
- catatonic-like states;
- hypotension (sometimes fatal);
- cardiac arrest;
- blood dyscrasias (pancytopenia, thrombocytopenic purpura, leukopenia, agranulocytosis, eosinophilia, hemolytic anemia, aplastic anemia);
- liver damage (jaundice, biliary stasis);
- endocrine disturbances (hyperglycemia, hypoglycemia, glycosuria, lactation, galactorrhea, gynecomastia, menstrual irregularities, false-positive pregnancy tests);
- skin disorders (photosensitivity, itching, erythema, urticaria, eczema up to exfoliative dermatitis);
- other allergic reactions (asthma, laryngeal edema, angioneurotic edema, anaphylactoid reactions);
- peripheral edema; reversed epinephrine effect;
- mild fever after large I.M. doses;
- increased appetite;
- increased weight;
- a systemic lupus erythematosus-like syndrome;
- pigmentary retinopathy;
- with prolonged administration of substantial doses, skin pigmentation, epithelial keratopathy, and lenticular and corneal deposits.
Although phenothiazines cause neither psychic nor physical dependence, sudden discontinuance in long-term psychiatric patients may cause temporary symptoms, e.g.,
Note: There have been occasional reports of sudden death in patients receiving phenothiazines. In some cases, the cause appeared to be cardiac arrest or asphyxia due to failure of the cough reflex.
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Medications & Supplements
Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
Professional side effects and drug interactions sections courtesy of the U.S. Food and Drug Administration.