Tryptocalm LT™ is specially formulated to manage common behavioral problems in dogs and cats. One of the main ingredients in Tryptocalm LT is L-tryptophan, an essential amino acid. L-tryptophan is biochemically converted to serotonin, the neurotransmitter known for its role in regulating a range of bodily functions, including sleep, appetite and mood. Independent studies have reported calming effects of L-tryptophan in regulating sleep patterns in animals and controlling many behavioral problems. Research indicates that, while not a “sedative,” L-tryptophan has a calming effect on animals.