Mogadon (Nitrazepam)

Nitrazepam belongs to the benzodiazepine class and is used to treat conditions related to central nervous system hyper‑excitability.

• Insomnia: helps initiate and maintain sleep during short‑term treatment.
• Anxiety: reduces excessive worry and tension in acute anxiety episodes.
• Sleep initiation difficulty: facilitates faster onset of sleep in patients with difficulty falling asleep.

• Nitrazepam acts as a positive allosteric modulator of the GABA‑A receptor complex. By binding to the benzodiazepine site, it enhances the inhibitory effect of the neurotransmitter GABA, increasing chloride ion influx and producing neuronal hyperpolarisation, which results in sedative, anxiolytic, and hypnotic effects.

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.
• Fatigue: persistent lack of energy.
• Memory impairment: difficulty recalling recent events.
• Ataxia: loss of coordination and balance.
• Headache: mild to moderate head pain.

Serious or Rare Side Effects

• Respiratory depression: slowed or shallow breathing, especially with other depressants.
• Severe allergic reaction: rash, swelling, or difficulty breathing.
• Suicidal thoughts: emergence of depressive ideation or self‑harm urges.
• Paradoxical reactions: increased agitation, aggression, or anxiety.
• Withdrawal seizures: risk when the drug is stopped abruptly after prolonged use.
• Depression worsening: emergence of depressive symptoms.

Nitrazepam requires careful use and monitoring to minimise risks.

• Abrupt discontinuation: taper the dose under medical supervision to avoid withdrawal seizures.
• Elderly patients: start with the lowest effective dose due to increased sensitivity and fall risk.
• Concomitant alcohol: avoid alcohol as it can potentiate sedation and respiratory depression.
• Hepatic impairment: dose adjustment may be needed because the drug is metabolised in the liver.
• Pregnancy and lactation: consult a specialist before use as safety data are limited.
• Store at ambient temperature below 25°C: keep in the original packaging, protect from moisture and direct sunlight.

Nitrazepam can interact with several other medicines, altering its efficacy or safety profile.

Major Interactions (Avoid)

• Other CNS depressants (e.g., opioids, barbiturates): may cause profound sedation or respiratory depression.
• Alcohol: additive sedative effect increasing risk of accidents.
• Strong CYP3A4 inhibitors (e.g., ketoconazole): can raise nitrazepam plasma levels and toxicity.

Moderate Interactions (Monitor Closely)

• CYP3A4 inducers (e.g., rifampicin, carbamazepine): may reduce therapeutic effect.
• Antifungal agents (e.g., fluconazole): may modestly increase nitrazepam concentrations.
• Selective serotonin reuptake inhibitors (SSRIs): may enhance central nervous system depression.