11 Shocking Side Effects of Melatonin


Many people consider melatonin to be a safe sleeping aid. However, the medication is known to trigger various side effects. The severity of the side effects might vary depending on your health condition. Starting from dizziness to headaches, nausea to stomach aches, melatonin can cause various problems. Melatonin can also cause paranoia, trauma and also might lead to devastating depression. The medication has known to cause severe anxiety and other serious medical condition. Under extreme conditions, regular exposure to the melatonin might also cause death.

Side Effects of Melatonin

Melatonin side effects

The side effects of melatonin are as follows:


Feeling dizzy is one of the side effects of dosing on melatonin. Dizziness could also be caused by an allergic reaction to melatonin supplement that enhances production of this hormone. Dizziness can be very problematic and can seriously affect your daily life. This is one of the typical side effects of melatonin dosage. Always consult a doctor on the safe dosage of taking melatonin supplements.


Over dosage of melatonin can lead to severe headache in many cases. Headache as a side effect of melatonin usually occurs in the morning. Melatonin hormone regulates our sleeping and wakefulness. Over dosing on melatonin supplements can spiral downwards and cause tremendous headache. It is therefore risky to take this hormone supplement without the advice of a doctor.


Over dosage of melatonin supplements can also cause nausea and vomiting. Nausea is one of the common side effects of this hormone supplement. Melatonin affects the stomach as side effect and triggers nausea. It is better to observe precautions while taking this supplement.  Get a green signal from your doctor before taking it.


Daytime sleepiness

One of the most common consequences of overdosing on melatonin is daytime drowsiness. Melatonin hormone produced by our brain regulates our sleeping pattern. It helps us sleep and wake up. When you over dose on melatonin supplements to aid your sleep, it can lead to sleepiness. Feeling drowsy all the time is an obvious side effect of this hormone supplement. This especially happens when you take this supplement at the wrong time. Feeling drowsy during daytime can be very risky.


Extreme overdosing of melatonin can cause severe consequences. This hormonal supplement can cause severe paranoia and hallucinations.  You can experience different kind of hallucinations and confusions. This is a very dangerous consequence of melatonin overdose. The supplement can make you feel disoriented and lose track of reality. It can be very harmful for your health. This also affects your normal life in a negative way. It is best to consult a doctor on the correct dosage of melatonin.

Hormonal problems

Taking hormone supplement will automatically disrupt the natural hormones of your body.  Melatonin has the capability to reduce your sexual urge as a side effect. It is common in both men and women. This hormone supplement disturbs the ovulation cycle of women and cause hormonal changes. This is a reason why pregnant women are advised by doctors to stay away from melatonin. Melatonin is also harmful to the fetus. It affects their growth. If you are pregnant or trying to become pregnant, stay away from melatonin.


Melatonin is known to cause severe anxiety as a side effect.  Over dosing on this hormone can affect your mood and make you too much anxious. It disrupts the hormones in your body and triggers anxiety in many women. Depression is also one of the side effects of melatonin overdose. Depression a s a side effect of this hormone is generally not long lasting. It might go away once you stop the medication.  Consult your doctor if you notice sudden change in your mood and behavior.

Abdominal cramps

Melatonin over dosage causes stomach problems in many cases. This hormone supplement triggers stomach cramps, diarrhea and other problems as consequences of overdose.  It is one of the most obvious side effects of melatonin. Stomach problems may occur as a side effect even if you take the prescribed amount of this hormone. Notify your doctor immediately if you experience these side effects.

Body tremor

One of the rarer side effects of melatonin is mild body tremor. This is not a very common side effect. It only occurs to some. But it is something not to be ignored. If you continue taking this hormone supplement despite the tremors, it can get worse. The situation will become more complicated. It is best to consult your doctor as soon as possible if you start noticing mild tremors in your hands or whole body.



Melatonin hormone can affect the mood as a side effect. It will make you more cranky and irritable. This will lead to a lot of problems in your daily life. If you are moody and irritable all the time, it can affect your life seriously. You will not be able to do anything productive if you continuously feel irritated.  It is always better to consult a doctor and stop taking the supplement.

Low blood pressure

Another rare side effect of melatonin is abnormal decrease in blood pressure. Low blood pressure can be very dangerous for your health. It is all the more concerning if you are pregnant with child. Low blood pressure and negatively affect you and the baby. A sudden fall in blood pressure is fatal. Immediately check with your physician if you notice a fall in blood pressure. He might advice you to stop taking your melatonin supplements.


Melatonin hormones regulate the natural sleeping cycle of your body. Melatonin is highest in your body at night. This is the time you sleep the best. Many people take melatonin supplements as aid to their sleeping.  Melatonin supplements are considered to be useful for treating sleeping disorders.  Melatonin supplements are generally safe if you use them for a short time. It does not make you too dependent unlike other sleeping pills. However, melatonin also has several side effects. Over dosage of melatonin can cause severe health complications. It sometime can cause death as well. Therefore, it is always safer to take this hormone under a doctor’s advice.