Misar (Alprazolam)

Alprazolam is a benzodiazepine that acts on the central nervous system to alleviate anxiety‑related conditions.

• Generalized anxiety disorder: reduces excessive worry and tension, improving daily functioning.
• Panic disorder: diminishes the frequency and intensity of panic attacks.
• Anxiety associated with depression: eases co‑occurring anxiety symptoms, supporting overall mood stabilization.

• Alprazolam binds to the benzodiazepine site on the GABA‑A receptor complex, acting as a positive allosteric modulator. This enhances the affinity of GABA for its receptor, increasing chloride ion influx and producing a greater inhibitory effect on neuronal firing in the central nervous system, which results in anxiolysis, sedation, and muscle relaxation.

Adverse reactions may vary in frequency and severity.

Common Side Effects

• Drowsiness: feeling unusually sleepy or fatigued.
• Dizziness: sensation of light‑headedness or unsteadiness.
• Impaired coordination: reduced motor control or clumsiness.
• Memory disturbances: difficulty recalling recent events.
• Mood changes: irritability or mild depression.
• Gastrointestinal upset: nausea or abdominal discomfort.

Serious or Rare Side Effects

• Respiratory depression: slowed or shallow breathing, especially with other depressants.
• Severe allergic reaction: rash, itching, swelling, or difficulty breathing.
• Dependence or withdrawal: signs of physical or psychological dependence after prolonged use.
• Paradoxical aggression: increased hostility or agitation.
• Suicidal thoughts: emergence of suicidal ideation or behavior.
• Hepatic dysfunction: abnormal liver enzymes or jaundice.

Before prescribing alprazolam, clinicians should consider several safety factors.

• Pregnancy: Category D – potential risk to the fetus; avoid unless benefits outweigh risks.
• Breastfeeding: excreted in milk; assess risk versus benefit for nursing infants.
• Elderly patients: increased sensitivity; start with the lowest effective dose.
• Concomitant CNS depressants: risk of enhanced sedation and respiratory depression.
• History of substance abuse: potential for dependence; monitor closely.
• Store at ambient temperature: keep below 25°C in the original container, protect from moisture and light.

Alprazolam may interact with other medicines, altering its efficacy or safety profile.

Major Interactions (Avoid)

• Opioids (e.g., morphine, oxycodone): additive respiratory depression.
• Barbiturates (e.g., phenobarbital): profound CNS depression.
• Antifungals (e.g., ketoconazole): increased alprazolam plasma levels.
• Macrolide antibiotics (e.g., erythromycin): elevated drug concentrations.
• HIV protease inhibitors (e.g., ritonavir): heightened sedation risk.

Moderate Interactions (Monitor Closely)

• Antidepressants (e.g., fluoxetine, sertraline): may increase sedation.
• Antihistamines (e.g., diphenhydramine): additive drowsiness.
• Alcohol: enhances CNS depressant effects.
• Anticonvulsants (e.g., carbamazepine): may reduce alprazolam levels.
• Cimetidine: modest increase in drug exposure.