I take 10 000 units of Vit D each day. Partly because I'm a pasty nerd who never goes out and partly because large doses are anecdotally helpful for mood.
I take around 1.5mg of melatonin each night. Would have preferred 1 or less but it's too difficult to find them in smaller quantities so I make do with halving 3mg tablets. When I take them I find it significantly easier to get to sleep.
Wikipedia lists the safe upper limit of vitamin D as 4000 IU (100ug), so taking 10000 could be unhealthy.
Since it turns out that it isn't feasible to include check as many as apply questions in the big survey, I'm asking about supplements here. I've got a bunch of questions, and I don't mind at all if you just answer some of them.
What supplements do you take? At what dosages? Are there other considerations, like with/without food or time of day?
Are there supplements you've stopped using?
How did you decide to take the supplements you're using? How do you decide whether to continue taking them?
Do you have preferred suppliers? How did you choose them?