DIAZEPAM INJECTION USP 10MG/2ML (5MG/ML)

The effect of diazepam, a benzodiazepine, results from its action on the central nervous system:
Jesse O'Neil

PRESCRIBING INFORMATION

This product is to be administered by a Qualified Health Professional only.

DIAZEPAM INJECTION USP 10MG/2ML (5MG/ML)

NOTE: For full prescribing information, please refer to Summary of Product Characteristics before prescribing.

COMPOSITION

Each ml contains:

  • Diazepam USP – 5 mg

  • Benzyl Alcohol USP – 1.5% v/v (as preservative)

  • Water for Injection USP – q.s.

PHARMACOLOGICAL ACTION

The effect of diazepam, a benzodiazepine, results from its action on the central nervous system: sedation, hypnosis, decreased anxiety, muscle relaxation, anterograde amnesia, and anticonvulsant activity.

Elimination follows a biphasic pattern: a rapid distribution phase followed by a prolonged terminal elimination phase of 1–2 days. The half-life of its principal metabolite, desmethyldiazepam, is 2–5 days. Excretion occurs via urine. Diazepam and its metabolites cross the blood-brain barrier, the placental barrier, and are excreted in breast milk.

INDICATIONS

Diazepam is used in:

  • Treatment of anxiety and tension states as a sedative and pre-medication

  • Control of muscle spasm (e.g., tetanus)

  • Management of alcohol withdrawal syndrome

  • Control of status epilepticus

Indicated only when the disorder is severe, disabling, or subjecting the individual to extreme stress.

CONTRA-INDICATIONS

  • Hypersensitivity to benzodiazepines

  • Impaired liver, kidney, or respiratory function

  • Elderly and debilitated patients (sensitive to side-effects)

  • Infants (may be unable to metabolise diazepam)

  • Enhanced effects with alcohol, barbiturates, narcotics, and other CNS depressants

  • Avoid in psychotic patients unless anxiety is marked

  • Avoid in CNS depression, coma, acute pulmonary insufficiency, or sleep apnoea

  • Use with caution in chronic pulmonary insufficiency

  • Avoid in first trimester of pregnancy and lactating mothers

WARNINGS

  • Intravenous injection rate must not exceed 5 mg/minute

  • Patients should not drive or operate machinery due to drowsiness and impaired concentration

  • Potential for abuse and dependence, especially with prolonged use and high doses

  • Withdrawal symptoms may occur after long-term use

DOSAGE AND DIRECTIONS FOR USE

  • Start with the lowest recommended dose; do not exceed maximum dose

  • Administer by deep intramuscular or slow intravenous injection

  • IV injection: slowly into a large vein at ≤1 mL (5 mg) per minute

  • Keep patient supine for at least 1 hour post-administration

  • Facilities for respiratory assistance must be available

Examples:

  • Severe anxiety/acute muscle spasm: 10 mg IM/IV, repeat after 4 hours

  • Delirium tremens: higher doses may be required

  • Tetanus: 100–300 mcg/kg IV, repeat every 1–4 hours

  • Status epilepticus (adults): 150–250 mcg/kg IM/IV, repeat after 30–60 minutes

  • Minor surgery/dentistry: 100–200 mcg/kg adjusted to requirements

  • Children (sedative): up to 200 mcg/kg

  • Children (status epilepticus): 200–300 mcg/kg or 1 mg per year of age, repeat if necessary

Treatment duration: generally 8–12 weeks including tapering. Elderly/debilitated patients: half usual adult dose. Reduce dose in liver/kidney dysfunction.

SIDE-EFFECTS AND SPECIAL PRECAUTIONS

Reported effects include: dizziness, vertigo, headache, confusion, depression, slurred speech, libido changes, ataxia, tremor, blurred vision, urinary issues, GI disturbances, jaundice, blood disorders, amnesia, paradoxical excitation.

High doses/parenteral use: respiratory depression, hypotension, CNS depression, coma. Enhanced sedation with alcohol, antidepressants, antihistamines, anaesthetics, sedatives, neuroleptics, opioids.

Caution in: personality disorders, organic brain changes, arteriosclerosis, bereavement, psychotic illness, depression with anxiety, history of alcohol/drug abuse.

Dependence

Risk of abuse and dependence with prolonged use/high doses. Withdrawal symptoms: headache, muscle pain, anxiety, tension, restlessness, confusion, irritability. Severe cases: hallucinations, seizures, hypersensitivity, depersonalisation.

Rebound Effects

Symptoms may recur in enhanced form after withdrawal. Gradual tapering recommended.

Duration of Treatment

Should not exceed 8–12 weeks (including tapering). Inform patients of limited duration and possible rebound phenomena.

REPORTING OF SUSPECTED ADVERSE REACTIONS

Healthcare professionals should report suspected adverse reactions to:

  • Email: pvsafety@atlanticlifesciences-gh.com

  • ADR Report Form: www.atlanticlifesciences-gh.com

KNOWN SYMPTOMS OF OVERDOSAGE AND TREATMENT

Symptoms: see “Side-effects and Special Precautions.” Treatment: intensive, symptomatic, supportive measures. Maintain cardiovascular, respiratory, and renal functions.

PRESENTATION

2 ml USP Type I amber glass ampoule. Packed in cartons containing 10 ampoules × 2 ml.

STORAGE INSTRUCTIONS

  • Store below 25°C, protected from light

  • Avoid freezing

  • Keep out of reach of children

SHELF-LIFE

36 months Date of Publication: September 2023

MANUFACTURER

Atlantic Lifesciences Limited Plot no: 16/01, Larpleku, Tema-Aflao Road, Greater Accra, Ghana

Would you like me to also prepare a one-page summary sheet for quick reference, or keep it in this full prescribing format?

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