Nitrazepam Accord (Nitrazepam)

Nitrazepam acts on the central nervous system to produce sedative and anxiolytic effects, making it useful for several sleep‑related and anxiety conditions.

• Insomnia: helps initiate and maintain sleep in patients with severe difficulty falling asleep.
• Anxiety disorders: reduces excessive tension and nervousness in generalized anxiety.
• Pre‑operative sedation: provides calming effect before surgical procedures.

• Nitrazepam binds to the benzodiazepine site on the GABA‑A receptor complex, acting as a positive allosteric modulator. This enhances the inhibitory action of the neurotransmitter GABA, increasing chloride ion influx and hyperpolarising neuronal membranes, which results in reduced neuronal excitability and a sedative‑hypnotic effect.

Nitrazepam may cause a range of adverse reactions, from mild to severe.

Common Side Effects

• Drowsiness: feeling unusually sleepy during daytime.
• Dizziness: sensation of light‑headedness or unsteadiness.
• Headache: mild to moderate cranial pain.
• Impaired coordination: reduced motor control.
• Memory impairment: difficulty recalling recent events.
• Fatigue: persistent lack of energy.

Serious or Rare Side Effects

• Respiratory depression: slowed breathing that may require medical attention.
• Severe allergic reaction: rash, swelling, or anaphylaxis.
• Paradoxical reactions: increased agitation or aggression.
• Dependence and withdrawal: risk of physical dependence with prolonged use.
• Seizures: rare occurrence, especially after abrupt discontinuation.
• Depression of central nervous system: profound sedation or coma.

Before prescribing nitrazepam, clinicians should evaluate several safety factors.

• Assess renal and hepatic function: adjust use if impairment is present.
• Monitor for depression or suicidal thoughts: especially in patients with mood disorders.
• Avoid abrupt discontinuation: taper gradually to prevent withdrawal.
• Use caution in elderly patients: higher risk of falls and confusion.
• Avoid concomitant alcohol or CNS depressants: may enhance sedation.
• Store at ambient temperature: keep below 25°C in the original container, protect from moisture.

Nitrazepam can interact with other medicines, altering its effectiveness or safety.

Major Interactions (Avoid)

• Other CNS depressants (e.g., opioids, barbiturates, alcohol): may cause profound sedation.
• Strong CYP3A4 inhibitors (e.g., ketoconazole, itraconazole): increase nitrazepam levels.
• CYP3A4 inducers (e.g., rifampin, carbamazepine): reduce therapeutic effect.

Moderate Interactions (Monitor Closely)

• Antidepressants (e.g., SSRIs, SNRIs): may enhance central depression.
• Antihistamines (e.g., diphenhydramine): additive sedative effect.
• Anticonvulsants (e.g., valproate): potential alteration of seizure threshold.