Melatonine Viatris Lp (Melatonin)

Melatonine Viatris Lp acts on the melatonin receptor pathway to regulate circadian rhythm and support sleep.

• Insomnia: facilitates sleep onset and improves sleep continuity in adults.
• Sleep‑wake rhythm disorders: helps synchronize abnormal circadian patterns such as shift‑work disorder.
• Jet lag: reduces the time needed to adjust to new time zones after long‑distance travel.

• Melatonin binds to MT1 and MT2 receptors in the suprachiasmatic nucleus, mimicking endogenous melatonin. This activation modulates the circadian clock, decreases neuronal firing during the night, and promotes the physiological processes that initiate and maintain sleep.

Melatonin is generally well tolerated, but adverse reactions can occur.

Common Side Effects

• Headache: mild to moderate pain often resolving without treatment.
• Dizziness: transient sensation of light‑headedness.
• Nausea: occasional stomach discomfort.
• Daytime sleepiness: residual drowsiness after nighttime dosing.
• Mild gastrointestinal upset: occasional abdominal cramping.

Serious or Rare Side Effects

• Allergic reaction: rash, itching, or swelling requiring medical attention.
• Severe mood changes: depression or agitation in susceptible individuals.
• Hallucinations or vivid dreams: rare neuropsychiatric events.
• Severe hypotension: marked drop in blood pressure.
• Respiratory depression: especially when combined with other CNS depressants.

Before using Melatonine Viatris Lp, consider the following safety measures.

• Assess renal function: dose adjustment may be needed in severe impairment.
• Evaluate hepatic status: monitor for accumulation in liver disease.
• Avoid operating machinery: potential residual drowsiness can impair alertness.
• Consult a physician if pregnant or breastfeeding: limited safety data are available.
• Do not exceed prescribed dose: higher amounts increase risk of side effects.
• Store at ambient temperature: keep in the original pack, protect from moisture and light.

Melatonin can interact with other medicines, requiring attention to avoid adverse outcomes.

Major Interactions (Avoid)

• Concomitant use with other sedative‑hypnotics (e.g., benzodiazepines) may cause excessive sedation.
• Co‑administration with warfarin may increase bleeding risk.
• Use with immunosuppressants may alter sleep patterns and immune response.

Moderate Interactions (Monitor Closely)

• CYP1A2 inhibitors such as cimetidine can raise melatonin plasma levels.
• CYP2C19 inhibitors like fluvoxamine may increase exposure and side effects.
• Alcohol consumption can enhance sedative effects and impair coordination.