If you're low on glycine and taurine, which help the body make the neurotransmitters you're low on, you need to check the quality of the protein you're eating. Glycine and taurine are amino acids, and along with tyrosine and phenalynine and tryptophan manufacture the neurotransmitters that regulate mood. I would look to your diet and make sure you're eating sufficient protein.
I am not sure that supplements are the right way to go. These tests have to be interpreted by your doctor...the levels may be low, but that may be normal for you..
What did your doctor say with regards to your test results?
I'm not sure about this but the doctor on the weight loss and healthy lifestyle expert forum may also be able to help.
I'm sorry your post has been overlooked (along with several others including 'Elder Abuse' and 'breast for a man').