Each product has their own formula, some use herbs in combination, but basically they are forumulas that use several amino acids combined with b vitamins, and other nutrients to help raise levels of neurotransmitters. For example B'Calmed has the ingredients
Though this particular product's selling point is that it is helpful for people with ADD or ADHD.
Welatonin™ claims a three month back guarantee and they claim it helps with depression:
Naringen, B-12, Rosea, Rhodiola, Initol Hexonicotinate, 5-Hydroxytryptophan, Macuna Puriens, Damiana, Chinese
Red Ginseng Root, Astragalus Root, Cayenne Fruit, Echinacea Whole Plant, Fo Ti Root, Guarana Seed, Panax Ginseng Root & Extract and Siberian Ginseng Root. combine to create a nutritional breakthrough that will boost your energy and vitality and help you say goodbye, once and for all, to depression.
I think Adapton is an herb for chronic stress-induced anxiety, fatigue, or Depression symptoms...
Clarocet has 150mg St. Johns Wort, 5 HTP, Kava Kava and other herbs and is sold as a natural antidepressant.
I could go on but you get the idea...just type in the names in google if you want more info..I am familiar with some of these amino acids but that is about it. I have heard certain things about the seperate ingredients, but never about these particular combinations. [is the jury still out on Kava Kava? Heard that could cause liver damage but probably under extreme conditions]
Other than that, I think the rest of the ingredients are fairly safe, as far as we know anyway. I have contacted the people who make Neropa and Seratona and they claim that the combination of their ingredients creates a better delievery for 5HTP...I will continue my research and if anyone else has heard anything, please let me know.