Probably because you are getting all the dose at once; you could try a sustained release and see if that helps. The best way for you to get melatonin is allowing your body to make it.
Light defeats melatonin.
If you correctly take melatonin 2-3 hours before you want to fall asleep, but you continue to be exposed to bright light or “blue light” (such as every electronic screen you own, from your mobile phone to the TV), your body is getting mixed messages, and taking melatonin won't help.
The morning after taking melatonin, you should wake up feeling rested, relaxed and invigorated. If you've gotten a full night's sleep, but still feel groggy when you wake, you may be taking too large of a dose of melatonin. Reduce your dose next time to see if that helps.
If you find yourself waking up at the same time every night (including around 3 am) overwhelmed with thoughts, you might be suffering from a serious sleep disorder. Other sleep disorders, such as sleep apnea or restless leg syndrome, can also cause frequent awakenings during the night.
Keep the bedroom dark and quiet: Environmental disturbances, like noise and light, can wake a person from nighttime sleep. If darkness and quiet are not possible, wearing a sleep mask to block out light and earplugs to block out sound can help.
Avoid prolonged use of electronic devices with a screen, such as laptops, smartphones and ebooks before bed. Relax your body. Gentle yoga or progressive muscle relaxation can ease tension and help tight muscles to relax. Make your bedroom conducive to sleep.
Stop waking up in the middle of the night by improving your sleep hygiene. This includes getting light first thing and avoiding light, caffeine, large meals, and alcohol close to bedtime; keeping a consistent sleep pattern; and making sure your bedroom is cool, dark, and quiet.
The current clinical consensus is that daily melatonin consumption is considered safe. However, according to a 2020 article published in Antioxidants, more research is needed to determine the correct dose and time and understand potential long-term effects.
It is typically safe for adults to take melatonin every night for short periods of time. Several factors affect whether an individual should take melatonin every day.
It's readily available, and it's supposed to help you sleep . . . right? Sleep deprivation can make this logic seem sound, but experts say taking melatonin in the middle of the night can actually make your sleep schedule even worse.
However, in the UK, Melatonin is not authorised to be sold without a prescription. This means that it's illegal to sell it in health food shops as Melatonin supplements, like Melatonin gummies. Any sale of Melatonin without a doctor's prescription is illegal in the UK because it's a prescription-only medicine.
The rising cortisol levels and dealing with emotional events or feelings may be why many people wake up at 3 AM or 4 AM daily. Other reasons why you may be waking up in the middle of the night are: You are wearing uncomfortable or the wrong clothes to bed. Your bedroom is too warm or cold.
One study. View Source of older adults with insomnia found that magnesium supplementation at a dose of 500 milligrams daily for eight weeks helped them fall asleep fast, stay asleep longer, reduced nighttime awakenings, and increased their levels of naturally circulating melatonin.
If you have depression , daily stresses—such as financial worries, an argument with your spouse, or a jam-packed evening commute—could also lead to more nighttime wake-ups and more trouble getting back to sleep than someone without depression would experience.
Keep the bedroom space quiet, light, noise and temperature at a gentle level so as not to affect sleep quality. Put the clock in the bedroom out of sight: Watching the clock is stressful and makes it difficult to get back to sleep if you wake up at night.
Middle insomnia describes a difficulty maintaining sleep after initial sleep onset. For these individuals, sleep is fragmented with frequent awakenings at night. Middle insomnia is commonly associated with neurological syndromes (e.g., RLS), pain syndromes, or depression.
There are many reasons why you might wake up at 4 am for no reason. They include external factors, such as environmental disturbances like temperature, light, and noise. They also include internal factors, like your circadian rhythm, sleep disorders like sleep apnea, and/or medical issues, like heartburn.