You can get 300mcg pills but they never seem to be the sublingual, dissolving type. The lowest I've found dissolving tablets is 1mg. I take a half or a quarter and dissolve it under my tongue. That works fine when it works. Sometimes it puts me to sleep and I sleep longer than my usual 5-6 hours while waking up with a hangover. Sometimes it just makes me sleepy for 15 minutes and then I'm wide awake. Melatonin is very hit or miss for me. I smoked a lot of pot though, and from what I hear that triggers a massive melatonin release, so maybe my homeostasis is a bit messed up.

Sleep is tough. There are so many confounding factors and issues which can affect it... it's hard to find a single thing that works or that works consistently without side effects.

the variation may be because the pill isn't uniformly distributed so one half pill doesn't necessarily mean half dose of melatonin, which is why I was wondering if he crushed them. Check out the other responses, there seem to be liquid alternatives which are easier to dose.

I've heard 0.3mg recommended as a dose and I had a bottle of small 0.1mg pills.

You take syrup drops. One drop is ~150 mcg.

This is the way I do it now. I buy melatonin in a liquid and it has a dropper with measures on it. I don't sweat about a couple of drops too high or low, it's fine, much better than trying to chop up tablets into doses!

It's tastier too.