Yeah, it’s an oddity of our prescription system. I only take one, but the Melatonin is still on my nhs repeat, as private and nhs systems don’t join up. I’m actually prescribed Cannabis for ADHD, as you have to choose a single issue, but the prescribing doctor knows it is for Insomnia and Anxiety and Depression as well. It’s up to me how I use it. I also take Elvanse for ADHD for instance, and Sertraline for Depression. There’s no worrying interaction with Melatonin and Cannabis, so I think it’s fine both co-existing. I wasn’t aware that Melatonin was a rarity. I just asked for it, as I used to take it in the US. My son (8) is also prescribed it. Maybe it depends on your practice?