Taking an excessive amount of melatonin can lead to various uncomfortable side effects, including excessive drowsiness, dizziness, headache, nausea, and changes in mood or blood pressure.
Is 20 mg of melatonin too much? Taking supplemental melatonin at a dose of 20 mg is not recommended. It can lead to a melatonin overdose. This can cause daytime sleepiness, headaches, dizziness, drowsiness, lethargy, fatigue, nausea, and bedwetting in children.
Melatonin is one of the least toxic medication. Most common side effects of overdose are drowsiness, dizziness, fatigue, headache, confusion, nightmare, hypotension, tachycardia and hypothermia. Supportive measures and control of vital signs are essential for the treatment.
Adults should not take more than 10 mg at a time. Small doses can be effective. It's not the case that the more melatonin you take, the more effective it will be, or the sleepier you will be. Too high of a dose can be dangerous and associated with increased side effects.
Signs of melatonin overdose include excessive sleepiness, vomiting and trouble breathing. Other side effects of both low and high doses of melatonin can include headaches, excessive sleepiness, blood pressure changes, gastrointestinal problems, changes in other hormone levels and mood problems, McCall says.
Immediate action required: Call 999 or go to A&E if:
you or someone else has severe difficulty breathing - you're unable to get words out, or you're choking or gasping. you or someone else has a seizure (fit)
Taking too much melatonin can result in a "melatonin hangover." Uncomfortable side effects can occur the next day, such as headaches, daytime sleepiness, dizziness, mood changes, upset stomach, intense dreams, disorientation, or confusion.
Melatonin's biggest job is regulating your sleep-wake cycle. But it works in other areas of your body, too: Melatonin helps maintain regular menstrual cycles. Melatonin can also protect your brain health and prevent brain cells from breaking down.
People who are pregnant, breastfeeding, have autoimmune disorders, seizure disorders, depression, bleeding issues, or are on certain medications (like blood thinners, blood pressure drugs, diabetes meds, or immunosuppressants) should generally avoid melatonin or consult a doctor first, as it can worsen conditions, interfere with meds, or cause side effects like daytime drowsiness, especially in older adults with dementia.
Melatonin is fast-acting and will have you feeling sleepy within 20 to 40 minutes. Melatonin will stay in your system for about five hours. Shift workers: If you work the night shift, getting to sleep can be difficult because you are trying to sleep during the day, when your brain is not producing melatonin.
Regarding its chronic administration at 1000mg daily in adults, no toxicity was seen as reported by Cuesta et al. [13]. When consumed along with benzodiazepines (like alprazolam, diazepam, clonazepam), it reduces mean melatonin levels in healthy volunteers by 50–70 % [14].
Melatonin might worsen blood pressure in people taking blood pressure medications. Central nervous system (CNS) depressants. Melatonin use with these medications might cause an additive sedative effect. Diabetes medications.
How long does it take to work? Melatonin takes around 1 to 2 hours to work. How long will I take melatonin to treat insomnia? For short-term insomnia you'll usually be prescribed melatonin for 1 to 4 weeks.
What cancels naturally occurring melatonin sleep hormone? Because melatonin is triggered by darkness, being exposed to light at night can block melatonin production, especially the blue light from digital devices such as cell phones.
It's best to avoid combining melatonin and alcohol. If you take them together, you have a greater risk of excessive drowsiness and impaired thinking. And melatonin isn't likely to help with sleep issues caused by alcohol. If you do have a drink or two, it's best to skip taking melatonin.
This should not be before 8pm or after 4am. If you still need to take doses after this, try to take them at a similar time. You can increase your dose to up to two 3mg tablets (6mg) if you need to.
Doctors often don't prescribe melatonin because strong evidence for its long-term effectiveness and safety is limited, especially for general insomnia, with behavioral therapies like CBT-I preferred as initial treatments, plus concerns exist about unregulated supplement quality (incorrect dosages, contaminants) and unknown long-term effects, particularly in children, where behavioral approaches are usually better. While approved in specific cases (like for children with autism), it's generally a short-term option, not a first-line fix for most adults or kids.
You may feel some stomach discomfort after you take melatonin. Melatonin can cause symptoms such as nausea, vomiting, or stomach cramps. Taking too much melatonin can also lead to stomach irritation. Some people may also be more sensitive to oral melatonin regardless of how much they take.
Some Americans think melatonin is a natural sleep aid and take extremely high doses of the supplement on a nightly basis. But experts say melatonin isn't meant to be used the same way as a sleeping pill, and overusing melatonin can come with health risks.
Melatonin's target sites are both central and peripheral. Binding sites have been found in many areas of the brain, including the pars tuberalis and hypothalamus, but also in the cells of the immune system, gonads, kidney, and the cardiovascular system (39, 40).
Other, less common melatonin side effects might include: Vivid dreams or nightmares. Short-term feelings of depression. Irritability.
“You may want to try melatonin for sleep if you have difficulty for more than a night or two.” Research shows that a supplement may help people with insomnia fall asleep slightly faster and may have bigger benefits for those with delayed sleep phase syndrome—falling asleep very late and waking up late the next day.
Melatonin isn't addictive. You don't become physically dependent on it, develop a tolerance to it, or get withdrawal symptoms when you stop taking it. However, you can become psychologically dependent on melatonin and feel like you can't sleep without it because sleeping without it stresses you out, which keeps you up.
Yes, when taken at the proper dosage, melatonin is safe; however, some people experience side effects such as headaches, next-day grogginess or brain fog and dizziness. This may be more likely to occur if you've taken too much.
A hangover is unpleasant, but symptoms tend to go away within a day or so. If you drank too much alcohol and feel sick, try at-home hangover remedies like drinking plenty of water, eating some carbs and sleeping. There's no quick cure for hangovers. You need to let your body rid itself of the alcohol and heal.