Melatonin Vitabalans (Melatonin)

Melatonin acts on the melatonin receptor pathway to regulate sleep timing and is indicated for several sleep‑related conditions.

• Insomnia: helps reduce sleep onset latency and improve sleep quality in individuals with difficulty falling asleep.
• Jet lag: assists in adjusting the internal clock after rapid time‑zone travel, facilitating faster adaptation.
• Sleep‑wake rhythm disorders: supports normalization of disrupted circadian rhythms in shift‑work or non‑24‑hour sleep‑wake disorder.

• Melatonin binds selectively to MT1 and MT2 receptors in the suprachiasmatic nucleus of the hypothalamus. Activation of these G‑protein‑coupled receptors modulates intracellular cyclic AMP levels, leading to phase‑shifting of the circadian pacemaker and promotion of sleep onset. By mimicking endogenous melatonin, the drug reinforces the physiological night signal, thereby facilitating the transition to sleep. It also influences downstream neurochemical pathways that promote relaxation.

Melatonin is generally well tolerated, but some users may experience adverse reactions.

Common Side Effects

• Headache: mild to moderate headache after taking the product.
• Dizziness: transient light‑headedness or vertigo.
• Daytime sleepiness: residual drowsiness during waking hours.

Serious or Rare Side Effects

• Allergic reaction: rash, itching, swelling, or breathing difficulty.
• Mood changes: depression, irritability, or anxiety.
• Hallucinations: visual or auditory disturbances.

When using melatonin, several precautions should be considered to ensure safe and effective therapy.

• Pregnancy: consult a healthcare professional before use, as safety data are limited.
• Breastfeeding: weigh potential benefits against possible infant exposure.
• Underlying medical conditions: assess liver or kidney impairment prior to initiation.
• Concomitant CNS depressants: monitor for additive sedation.
• Driving or operating machinery: avoid until the effect on alertness is known.
• Store at ambient temperature: keep in the original container, protect from moisture and light.

Melatonin may interact with other medicines, requiring attention to avoid reduced efficacy or increased adverse effects.

Major Interactions (Avoid)

• Anticoagulants (e.g., warfarin): may increase bleeding risk.
• Immunosuppressants (e.g., cyclosporine): altered melatonin metabolism.
• CNS depressants (e.g., benzodiazepines): additive sedation.

Moderate Interactions (Monitor Closely)

• Caffeine: may diminish melatonin’s sleep‑inducing effect.
• Oral contraceptives: can raise plasma melatonin concentrations.
• Antidepressants (e.g., SSRIs): potential pharmacodynamic interaction.