What does the "L" stand for?
28 Nov 2010
Tryptophan (also known as L-tryptophan) is an essential amino acid. This means that humans must obtain tryptophan from dietary sources -- the body cannot produce it. Even though it is found in many foods, dietary supplements are also available. These supplements are claimed to be useful for treating a variety of conditions, such as depression, anxiety, premenstrual syndrome (PMS), and attention deficit hyperactivity disorder (ADHD).
Don't really know what 'L' stands for, perhaps you could call a pharmacy for info, sorry.
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