Homeopathic and herbal are actually quite different things.
Homeopathic remedies are plants or minerals that have been extensively diluted. In fact, a chemical analysis of the remedy may not find even a trace amount of the original plant or mineral. No one has been able to prove scientifically how or why it works. The going medical theory is that it is simply a placebo effect (tell that to my infant daughter, or to the animals treated by homeopathic vets). My personal opinion is that it does indeed work, and I don't need someone to prove to me why I'm sleeping for me to be able to sleep.
Because of the dilution, homeopathic remedies are very safe to try on children. I also have never heard that they are addictive. I've used Calms Forte myself on my kids, although only when they were very excited and I needed them to sleep, like before we caught a 6:00am plane. I use it myself for weeks at a time when I"m going through a stressful period and can't sleep.
I think there's nothing wrong with using Calms Forte for a short period to help break a cycle and get everyone well rested, but I agree with other Moms that you need to try to find the cause of the problem.
Good luck!
D.