Saying that from personal experience after I returned to Australia from the UK, and popped into a local pharmacist to grab some to try it out. The lady behind the counter and the customer next to her acted like I'd literally asked to buy heroin. (!)
It turns out Melatonin wasn't legal to buy at that time (a few years ago now), though the law has apparently been changed since.
The sustained release tablets (like ‘Circadan’ or similar branding) I found were not good - I’d wake up groggy and generally didn’t get good sleep. They were just prescribed by a regular GP, and the sleep specialist I saw later on thinks it’s counter productive because they keep releasing longer than you want it to.
The liquid form sounds like an interesting option. I haven't experimented much with timing - instructions suggest 20-30 minutes prior to bed, which I've been following for my very occasional usage.
Their 3mg tablets work great for the both of us.
I am imagining a household transforming into Amish roleplay by 9:30 PM.
I’ve achieved a similar-but-less-impactful effect by putting Zwave dimmer switches where I could, and setting the turn-on brightness to be lower during a “wind-down” house mode.
I swear by blue-blocking glasses for this reason, especially when driving at night since the advent of obnoxiously bright LED (but I repeat myself) head and tail lights on every car. These are my current pair, no affiliation: https://www.amazon.com/gp/product/B07CXYT17C/
If I try it again I’ll have to build my own battery powered lanterns with ultra-low-wattage incandescent bulbs (don’t want the spiky spectrum of LED for this purpose) to get them dim enough and in a useful form factor.
I could read and get around just fine by two beeswax candles (and after getting used to that, full room lighting seemed insane, it’s so bright) but most things you can buy are at least 5x that bright. Even most plug in night lights are brighter than two beeswax tapers.
I take magnesium (Mg) at bed time. I believe it helps reduce muscle cramping, improving my sleep.
TIL There are many compounds avail OTC. The most common Mg-citrate upsets my tummy. After trying a few variataions, I settled on Mg-glycinate, which is also reasonably priced (vs say Mg-orotate).
YMMV. Please consult your doc. Adverse effects, drug interactions, etc.
Best, of course, is a nice hot bath with epsom salt. But that's not always practical.