Calms forte is a natural homeopathic product. No clinical trials are required for it to be on the market in the USA, and it has enough of a reputation to speak for itself.
It has been on the market for a very long time and is even safe for young children.

It is a very helpful natural remedy for sleep and doesn't appear to have side effects like some other natural sleep aids can eg melatonin

Sometimes the proof of the pudding is in the eating