What is Melatonin? What Does it Do?

Modern life’s stress, exposure to screen light, and irregular working hours trigger sleep problems by disrupting our body’s natural balance. Melatonin, which steps in at this point, is the most critical hormone regulating the body’s biological clock. Secreted in the dark to send the “it’s time to sleep” message to the brain, this hormone not only improves sleep quality but also supports general health as a powerful antioxidant.

What is melatonin?

Melatonin is a natural hormone secreted by the pineal gland located in the center of the brain, especially as it gets dark. Its primary function is to regulate the body’s circadian rhythm, the sleep-wake cycle. Light is the biggest factor suppressing the production of this hormone; therefore, while melatonin levels decrease in daylight or under intense artificial light, they reach their peak in dark environments. In addition to being produced naturally in the body, this hormone can also be taken as a supplement and is one of the most frequently used natural supports in the treatment of sleep disorders.

What is it good for?

The primary benefit of melatonin is shortening the time it takes to fall asleep and increasing sleep quality. In people suffering from insomnia, it provides a deeper and uninterrupted rest by preparing the body for sleep mode. It helps reorganize the disrupted biological clock, especially in cases of jet-lag seen in shift workers or those traveling across continents.

Beyond its effects on sleep, melatonin is a powerful antioxidant. It supports the immune system by protecting cells against the harmful effects of free radicals. Some research shows that it also has positive effects on protecting eye health, alleviating reflux symptoms, and combating seasonal depression. There are also findings suggesting that it supports growth hormone secretion.

How is it used?

The use of melatonin supplements varies according to the person’s age, the severity of the sleep problem, and the form used. As a general principle, it is recommended to be taken 30 to 60 minutes before the planned sleep time. This period is sufficient for the hormone to enter the bloodstream and send sleep signals to the brain. It is recommended to start use with the lowest dose (usually 1 mg or 3 mg) and increase the dose if necessary according to its effectiveness. After taking the supplement, one should stay away from blue light sources such as phones, televisions, or computers and stay in a dim environment; otherwise, light can reduce the effect of the supplement.

How long does it take to take effect?

Melatonin supplements taken orally generally start showing their effect within 20 to 40 minutes after ingestion. Its level in the blood peaks at approximately the 60th minute. Therefore, it is more correct to take it during the preparation stage, not just before going to bed. Sublingual forms or sprays may take effect faster than tablets, in about 10-15 minutes, because they mix directly into the blood without passing through the digestive system. The effect time may also vary from person to person, according to metabolic rate and stomach fullness.

Do tablets work?

Yes, melatonin tablets are the most widely used and proven form globally. Melatonin in tablet form is absorbed in the stomach and intestines and enters the blood. Especially “time-release” tablets support not only falling asleep but also maintaining sleep by slowly releasing melatonin into the body throughout the night. In this way, the tablet form is quite functional for people who wake up frequently at night. However, because the absorption process of the tablet can be affected by stomach acid and digestion speed, it may not show the same effect speed in every individual.

Can it be taken as a syrup?

Melatonin syrup or drops are an ideal alternative, especially for adults who have difficulty swallowing tablets and for children who need to use it under a doctor’s supervision. Since it is in liquid form, dose adjustment can be made much more precisely; the person can easily increase or decrease the dose according to their needs. The syrup form is absorbed faster in the digestive system and enters the blood compared to tablets. It is usually flavored with natural aromas to make its taste more acceptable. Since its absorption is fast, it is an effective solution for those who have trouble falling asleep.

How is the spray?

Melatonin sprays are one of the fastest-acting forms whose popularity has increased in recent years. They are usually applied by spraying under the tongue or inside the cheek. Thanks to the capillaries in this region, melatonin participates directly in the blood circulation without going to the liver and digestive system (without being subjected to the first-pass effect). This ensures that the bioavailability, i.e., the rate at which the body benefits from the substance, is very high. For those who have difficulty swallowing, those who have trouble falling back asleep after waking up at night, or those who expect a fast effect, the spray form is quite practical and effective.

Are there any side effects?

Melatonin is a supplement generally considered safe for short- and medium-term use, with a low risk of addiction. However, some people may experience mild side effects such as headache, dizziness, daytime sleepiness, or nausea. Since it is a hormonal supplement, pregnant women, breastfeeding mothers, and those with autoimmune diseases must consult a doctor before using it.

Long-term and high-dose use is generally not recommended due to the concern that it may make the body’s own natural production “lazy.” It can also interact with blood thinners, diabetes medications, or immunosuppressive drugs. Therefore, it is of vital importance for people with a chronic illness or those using regular medication to use it under physician supervision.