Category- Allopathy
About Melatonin 3 mg
Melatonin 3 mg is an oral sleep-support medicine/supplement that helps regulate the body’s natural sleep-wake cycle, which works by acting like the body’s natural melatonin hormone, which normally rises at night and signals the brain that it is time to sleep. This helps the body feel ready for sleep and may reduce the time it takes to fall asleep
It is mainly used for difficulty falling asleep and jet lag. Common side effects include drowsiness, daytime sleepiness, headache, dizziness, nausea, and vivid dreams. It is usually taken 30 minutes to 1 hour before bedtime and is generally used for short-term sleep support. It is not recommended to use more than the prescribed amount of melatonin 10 mg, as excessive use may increase the risk of side effects such as eye redness, irritation, burning sensation, watery eyes, blurred vision, and eye discomfort. If too many drops are used or if the medicine is accidentally swallowed, seek medical attention immediately.
Medicine Highlights
| Uses | 1. To help with difficulty falling asleep (insomnia). 2. To treat jet lag |
| Common Side Effects | 1. Drowsiness 2. Daytime sleepiness 3. Headache 4. Dizziness 5. Nausea 6. Vivid dreams or nightmares 7. Mild stomach discomfort |
| Additional Information | To keep you safe and healthy, use this medicine only with your doctor’s guidance. |
| Storage | 1. The medicine should be stored at room temperature. 2. Keep away from sunlight and moisture. 3. Keep away from the reach of children |
| How to Take This Medicine | Take this medicine orally with a sip of water. |
Melatonin 3 mg Uses
Melatonin 3 mg is an oral sleep aid / circadian rhythm regulator. Melatonin 3 mg used to treat the following conditions:
- Difficulty falling asleep (insomnia)
- Jet lag
Melatonin 3 mg side effects
More Common
- Drowsiness
- Daytime sleepiness
- Headache
- Dizziness
- Nausea
- Vivid dreams or nightmares
- Mild stomach discomfort
Less Common
- Mood changes
- Irritability
- Confusion
- Short-term depression feelings
- Allergic reaction (rash, swelling, breathing trouble)
- Reduced alertness
How Melatonin 3 mg works
Melatonin 3 mg works by acting like the body’s natural sleep hormone. It helps control the sleep-wake cycle (circadian rhythm) and signals the brain that it is time to sleep, especially in darkness. This helps the body relax and may make it easier to fall asleep.
Safety Measures and Warning
Allergy or Hypersensitivity
Melatonin 3 mg may cause rash, itching, swelling, or allergic reactions in sensitive people. Always inform your doctor if you have any allergy before taking this medicine.
Daytime sleepiness
Melatonin 3 mg may cause next-day drowsiness, dizziness, or reduced alertness, which can affect driving or work. Always inform your doctor if you feel excessive sleepiness after taking this medicine.
Mood problems
Melatonin 3 mg may rarely worsen irritability, anxiety, confusion, or low mood in some people. Always inform your doctor if you have any mood disorder or notice mood changes while using this medicine.
Autoimmune disease
Melatonin 3 mg may not be suitable in people with autoimmune conditions and may worsen the condition in some cases. Always inform your doctor if you have any autoimmune disease before taking this medicine.
Pregnancy/Breastfeeding
Safety is not fully clear in pregnancy and breastfeeding. Always inform your doctor if you are pregnant, planning pregnancy, or breastfeeding before taking this medicine.
Children
Melatonin 3 mg should only be given to children if a doctor advises it, as the dose and safety need medical guidance. Always inform your doctor before giving this medicine to a child.
Melatonin 3 mg Interaction with Food Product
Avoid alcohol, as it can increase drowsiness and may disturb sleep quality. Avoid too much caffeine in the evening because it may reduce the sleep benefit of Melatonin 3 mg. Smoking may also affect how Melatonin 3 mg works in some people.
Melatonin 3 mg Interaction with Other Medicines
Avoid taking Melatonin 3 mg with the following medicines, as it may increase or decrease the desired effect, or in worse cases, it could be fatal:
Melatonin 3 mg Chemical Structure
IUPAC (International Union of Pure and Applied Chemistry)/ Chemical name
Melatonin: N-[2-(5-methoxy-1H-indol-3-yl)ethyl]acetamide

Intake routine/cycle
Daily dose
Take Melatonin 3 mg exactly as your doctor recommends. The dose may change based on your condition and how well you respond. Do not take more than prescribed without consulting your doctor.
Missed Dose
If you forget to take your medicine, take the medication as soon as you remember. If it’s nearly time for your next dose, skip the missed one and continue with your regular schedule. Always consult the doctor before making any changes to your dosage.
Overdose
It is not recommended to use more than the prescribed amount of melatonin 10 mg, as excessive use may increase the risk of side effects such as eye redness, irritation, burning sensation, watery eyes, blurred vision, and eye discomfort. If too many drops are used or if the medicine is accidentally swallowed, seek medical attention immediately.
Storage
- Store the medicine at room temperature.
- Keep away from sunlight and moisture.
- Keep out of reach of children.
Directions for use
- Take Melatonin 3 mg exactly as prescribed by your doctor, at the same time each day.
- Do not stop taking Melatonin 3 mg without your doctor’s approval, even if you feel better.
- If you forget to take Melatonin 3 mg, take it as soon as you remember. If it’s almost time for your next dose, skip the missed dose.
FAQ’s
What are the uses of Melatonin 3 mg tablets?
Melatonin 3 mg tablets are used to help with difficulty falling asleep, insomnia, jet lag, and sleep problems caused by an irregular sleep cycle. They help improve sleep by supporting the body’s natural sleep-wake rhythm.
What are the side effects of Melatonin 3 mg?
Common side effects of Melatonin 3 mg include drowsiness, daytime sleepiness, headache, dizziness, nausea, mild stomach upset, and vivid dreams or nightmares. In some people, it may also cause irritability or mood changes.
Which foods are rich in Melatonin?
Some foods that naturally contain Melatonin 3 mg include milk, tart cherries, grapes, bananas, oats, rice, tomatoes, walnuts, almonds, pistachios, and corn. These foods may help support natural sleep.
Which gland secretes Melatonin?
Melatonin is mainly secreted by the pineal gland, a small gland in the brain. It is usually released more at night or in darkness and helps control the body’s sleep-wake cycle.
Reference
- PubChem. Melatonin [Internet]. pubchem.ncbi.nlm.nih.gov. Available from
- Savage RA, Basnet S, Miller JMM. Melatonin [Internet]. Nih.gov. StatPearls Publishing; 2020. Available from
- What is the maximum safe dosage for melatonin? [Internet]. Drugs.com. Available from

Pranathi is a final year Pharm D student at Chalapathi Institute of Pharmaceutical Sciences. She loves learning and applying her knowledge in pharmacy and has a passion for writing, which allows her to express ideas clearly and creatively. She enjoys combining her technical skills with her love for writing and communication to make a meaningful impact. Currently she is working on a research paper about “Consanguineous marriages and its impact on children’s health” which will be published by the end of 2025.