Melatonin is a natural hormone that is the active ingredient in Circadin. This drug is also called a sleep hormone, as it increases especially during dark hours and makes us tired. It is excreted in the brain and in the retina of the eyes. This hormone plays a very important role in sleeping patterns and in the daily rhythm. It also regulates other body hormones.

Melatonin is believed to be a powerful antioxidant that strengthens the immune system. However, this has not been a great deal of research.

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What is melatonin?

Melatonin is a hormone that is produced in the pineal gland from serotonin. Melatonin is in contact with the eyes, which means that the amount of light affects its appearance. If a lot of light hits the eye, melatonin is not produced as much as in darkness. Therefore, television or phone are not recommended to be used before bedtime. The excretion of the hormone begins shortly after birth and the highest peak is reached when the child is 3-5 years old. Subsequently, production of melatonin will decrease over the years.

Melatonin as a medicine

The hormone can be synthesized and used as a cure in the case of insomnia and in the management of jet lag. Circadin is one of the most commonly used medicines in the treatment of jet lag. The drug has proven to be very effective for daily rhythm stabilization, which is a problem especially for jet lag. Additionally, it helps you to fall asleep if you have sleeping problems.

The medicine should be taken about 1-2 hours before bedtime. In addition, the drug is dependent on the intake of food and its functionality is unique. After all, the substance decomposes on the liver and can also be excreted in the urine.

Possible side effects

Although most drugs have potential side effects, melatonin has relatively less. It is therefore considered to be completely harmless when used in the short term. There is, however, no evidence of the long-term use of the drug, so its excessive use should be avoided.

If there are any side effects, they usually pass quickly. Possible side effects include:

  • Sleepiness
  • Exhaustion
  • Dizziness
  • Confusion
  • Nausea
  • Headache
  • Low body temperature
  • Absence of ovulation
  • Stomach pains
  • Itchiness
  • Irritaion


If you use a medicine to treat sleeping problems or jet lag, the dosage is quite unique. It depends, for example, on your age, health status, other medications, symptoms, and time zones you crossed. Check the size of the dosage always with your doctor who will prescribe the medicine for you.

If you take Circadin, a 2 mg tablet is usually taken just before bedtime. Always follow the instructions of your doctor and the official package leaflet.

Can I take melatonin?

Since medicines that contain melatonin have very little side effects, most people can use them. However, there are some groups of people that the medication is designed for:

  • People over 55 years of age with sleeping problems
  • Younger people with serious sleeping problems
  • People who travel across different time zones and suffer from symptoms of jet lag

Buying melatonin online

If you want to purchase a medicine containing melatonin, you can buy it through an online clinic or from a traditional pharmacy. Melatonin is not a prescription drug, so it’s quite simple to buy. There are several different brands on the market that contain melatonin so you can choose the most suitable one for you.

Circadin to treat insomnia and symptoms of jet lag

Circadin is one of the medicines containing melatonin used to treat sleeping disorders and jet lag. Circadin contains 2 mg melatonin per tablet and is one of the most popular medicines containing melatonin. It is possible to obtain this medicine without a prescription.


Since melatonin is just a hormone and not a medicine, it can be sold at different price points depending on the store. you’re planning to purchase it from.