Melatonina Zentiva

Melatonin, the active ingredient in Melatonina Zentiva, is a hormone presented as an oral tablet for oral administration. It regulates the circadian rhythm and is indicated for the short‑term management of sleep disturbances such as insomnia and jet lag in adults.

GNH USA supplies Melatonina Zentiva as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide, with distribution across EU and other regulated markets. The product complies with EU pharmacopeial standards and is manufactured under GMP conditions.

Melatonin acts on the melatonin receptor pathway to address sleep‑related disorders. - Insomnia: facilitates faster sleep onset and may improve sleep quality in adults. - Jet lag: aids in resetting the internal clock to reduce sleep‑wake disturbances after trans‑meridian travel. - Shift work disorder: supports adjustment of sleep timing for individuals with irregular work schedules.

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

Common Side Effects: - Drowsiness: feeling unusually sleepy during the day. - Headache: mild to moderate pain in the head. - Dizziness: sensation of light‑headedness or unsteadiness. - Nausea: mild stomach upset. - Vivid dreams: unusually intense or memorable dreams. - Mild gastrointestinal discomfort: occasional stomach cramps or bloating.

Serious or Rare Side Effects: - Allergic reactions: rash, itching, swelling of the face or throat. - Mood changes: depression, irritability, or anxiety. - Hormonal effects: menstrual irregularities in women. - Severe hypersensitivity: anaphylaxis requiring emergency care. - Suicidal thoughts: rare emergence of self‑harm ideation. - Severe skin reactions: Stevens‑Johnson syndrome or toxic epidermal necrolysis.

Before using Melatonina Zentiva, consider the following safety measures. - Assess sleep pattern: evaluate underlying causes before use. - Avoid driving: potential residual drowsiness may impair performance. - Use with caution in elderly: increased sensitivity to sedative effects. - Review concomitant medications: possible interactions with anticoagulants, immunosuppressants, or CNS depressants. - Store at ambient temperature: keep in original container, protect from moisture and light.

Melatonin may interact with several medicines; monitoring is advised.

Major Interactions (Avoid): - Anticoagulants (e.g., warfarin): may increase bleeding risk. - Immunosuppressants (e.g., cyclosporine): may reduce efficacy. - CNS depressants (e.g., benzodiazepines): additive sedative effect.

Moderate Interactions (Monitor Closely): - CYP1A2 inhibitors (e.g., fluvoxamine): may raise melatonin plasma levels. - Oral contraceptives: may alter hormone balance. - Antidepressants (e.g., SSRIs): potential for increased side effects.