One you drop. One you take instead.
In three lines:
3. A nightly melatonin gummy “forever” isn’t how the evidence was built.
2. Mega gummies often give you more than your brain makes on its own, and the labels can lie.
1. If you do use it, keep the dose low and the course short (jet lag, or a clinician’s plan), not a Chemist Warehouse sleep candy every night.
OUT — forever melatonin and the mega gummy
The Australian shelf story: a 5–10 mg gummy (sometimes more) every night, because sleep felt rough once on a flight.
Here’s what the evidence actually says. The NIH’s melatonin brief sits with the National Center for Complementary and Integrative Health (NCCIH); the Office of Dietary Supplements (ODS) points there rather than keeping its own sheet. Jet lag is the use with the most support: melatonin may help after eastward and westward flights, according to medium-sized reviews. Short-term use looks safe for most people. Long-term safety data are lacking.
Chronic insomnia is a different question. The major guidelines, the American Academy of Sleep Medicine (AASM) in 2017 and the US Department of Veterans Affairs and Department of Defense in 2019, recommended against melatonin for it. There isn’t enough evidence for that job.
The gummy problem is real. US sales jumped hard, and a research letter in JAMA found many melatonin gummies mislabelled: the amount didn’t match the label, and some contained CBD. So park the mega gummy if the job was “fix my sleep forever”, and keep taking anything a clinician directed.
IN — low dose, short course, named use
The honest IN is narrow:
Jet lag or a short circadian shift: a short course around the travel. The trials and supplements usually sit around 0.5–5 mg, timed to the destination night, not three stacked 10 mg gummies. Exact timing is a call for your GP or a sleep clinician.
A named clinician plan (some paediatric or circadian diagnoses, for example): their dose and duration win.
Or skip it. Skipping is a valid choice if you sleep fine once basic sleep hygiene is in place, and the bottle was fear-based.
Form: a plain melatonin tablet or liquid you can actually dose, not a sugar bomb. Don’t invent a lifelong maintenance dose from this letter.
ASK (take this to the GP)
“I’ve been taking high-dose melatonin gummies every night. Given NCCIH’s short-term jet-lag evidence and the lack of long-term safety data, should I stop the nightly habit and only use a low dose for short courses such as jet lag?”
This swap is not for you if
Melatonin, or any other sleep medicine, is prescribed: keep taking it, and ask your prescriber. Never stop on the strength of an email.
You have dementia (the AASM advises against melatonin in that group), you’re pregnant or breastfeeding, or you’re dosing a child without a clinician.
Shift work or chronic insomnia is the real problem. That needs a sleep plan, not a bigger gummy.
Sources
NCCIH (NIH): Melatonin — What You Need To Know — https://www.nccih.nih.gov/health/melatonin-what-you-need-to-know
Cohen PA et al. Quantity of Melatonin and CBD in Melatonin Gummies Sold in the US. JAMA 2023 — https://pubmed.ncbi.nlm.nih.gov/37039710/