Mellozzan (Melatonin)

Mellozzan (melatonin) acts on the melatonin receptor pathway to address disorders of sleep regulation, supporting the body's natural circadian rhythm.

• Insomnia: Improves sleep onset, reduces nighttime awakenings, and enhances overall sleep quality in adults.
• Jet lag: Helps synchronize circadian rhythm after rapid time‑zone travel, facilitating faster adjustment.
• Shift work disorder: Supports sleep timing for individuals working non‑traditional hours.
• General sleep disorders: Assists in establishing regular sleep patterns for patients with chronic sleep difficulty.

• Melatonin binds to MT1 and MT2 receptors in the suprachiasmatic nucleus of the hypothalamus. Activation of these G‑protein‑coupled receptors modulates the circadian clock, decreasing neuronal firing during the night and promoting physiological processes that initiate sleep. The agonist activity mimics endogenous melatonin, facilitating the transition to sleep without directly depressing central nervous system activity.

Adverse reactions to melatonin are generally mild, but some users may experience more serious events.

Common Side Effects

• Drowsiness or daytime sleepiness: A feeling of reduced alertness that may persist into waking hours.
• Headache: Mild to moderate head pain occurring shortly after ingestion.
• Dizziness: Transient light‑headedness or imbalance, usually resolving without intervention.
• Gastrointestinal discomfort: Nausea, abdominal cramps or mild upset stomach reported by some users.

Serious or Rare Side Effects

• Allergic reactions: Rash, itching, swelling of face or throat that may indicate hypersensitivity.
• Mood changes or depression: Rare reports of worsening mood, irritability, or depressive symptoms requiring medical review.

When considering melatonin therapy, several precautionary measures should be observed to ensure safe use.

• Pregnancy: Use only if clearly needed and prescribed, as safety data are limited.
• Breastfeeding: Caution advised; discuss potential exposure with a healthcare professional.
• Concomitant CNS depressants: May enhance sedative effects; monitor for excessive drowsiness.
• Chronic medical conditions: Evaluate renal or hepatic impairment before initiating therapy.
• Age considerations: Dosage adjustments may be required for elderly patients.
• Store below 25°C: Keep in the original container, protect from moisture and direct sunlight.

Melatonin can interact with other agents, altering its efficacy or increasing adverse effects.

Major Interactions (Avoid)

• Anticoagulants (e.g., warfarin): Melatonin may potentiate anticoagulant effect, increasing bleeding risk.
• Immunosuppressants (e.g., cyclosporine): Potential for altered drug metabolism; concurrent use should be avoided.

Moderate Interactions (Monitor Closely)

• Sedative antihistamines: Combined use may increase drowsiness.
• Benzodiazepines or Z‑drugs: May enhance overall CNS depression.
• Oral contraceptives: May reduce melatonin clearance, leading to higher plasma levels.