Tryptophan is an enzyme (?) in food. It does make you sleepy, for most people at least! The best place to get it is from turkey, that I know of. Dairy products have L-tryptophan, which is why a warm glass of milk can help you sleep. Not sure about for fear, although I guess you aren't as afraid while you're asleep LOL?
Are you wanting a non-food supplement? Not sure I would want to do that...one, I like to stick to food sources anyways, I have not heard of it's use for this but I'll try to look around. Which flower essence did you use? Did you get help in choosing the right one?
Ok....can't sleep so I found you some info:http://www.horseandstable.co.za/arti...ryptophan.html
About horses but great info stillhttp://www.smart-drugs.com/JamesSouth-tryptophan.htmhttp://www.omahavaccine.com/store/me...timulants.html
These all seem to be tryptophan based pet products for fear. I can't find ingredient info online though, so maybe try a holistic pet shop near you?
Also found this product: http://www.morrills.com/stress.htm
NutriCalm for Cats - from Rx Vitamins
Features pharmaceutical grade 1-trytophan as well as valerian root, ashwaganda, kava kava to soothe and relax - important nutrients for cats to complement their overall diet. 1 capsule once or twice daily.
50 caps $14.95
Scroll down the the white block where she says
"I've also learned quite a lot about protein..."
it goes into tryptophan and diets
Hope that helps...didn't make me any sleepier. Guess I should get me some trypophan!!