I remember parents of very slightly older babies lamenting the discontinuation of Medised when DS1 was a baby ten years ago.
I think we need to see our lives a tiny bit more in the round. Drugs shouldn't be given unsupervised or willy nilly, but sometimes a timely use of something can make something stressful a lot easier, and on balance its worth doing. My DS1 has ADHD and takes melatonin (prescribed) every night. He simply wouldn't sleep until midnight if he didn't have it. Melatonin isn't a sedative as its a synthesised version of the hormone melatonin that triggers our body clock to know it's bedtime.
You can buy melatonin over the counter in a preparation made for children in the whole of Europe, and in health food stores in the US. There are many many people who use it for themselves and their children when they need some sleep - or to reset their body clock and aid jetlag.
I for one wish I'd bought a shed load in the US and used it long ago for DS, but I was chicken as it's prescription-only here (and often GPs won't prescribe it until you've gone through a whole load of sleep hygiene stuff or your child has a diagnosis of ADHD or ASD) . It's changed our lives, and no side effects.
I also could kick myself for being some kind of PFB purist masochist and refusing to give DS1 infacol when he was tiny. God only knows why not - he had terrible colic and wind; we'd all have been happier if something had worked. Having twins sorted the PFB in me but I do think sometimes a one-off helping hand has a disproportionate benefit.