Neurotransmitter Balance By Douglas Laboratories Overview & Drug Interactions

L-tyrosine is a non-essential amino acid produced within the body through the conversion of the essential amino acid, phenylalanine. It is often used as a dietary supplement to support cognitive function, enhance focus, and mitigate stress by serving as a precursor for neurotransmitters like dopamine and norepinephrine.

S-adenosyl-l-methionine (SAM-e or SAMe) is a compound that is found naturally in the body and is involved in various processes, including the synthesis of neurotransmitters and the metabolism of hormones. SAM-e has been studied as a potential treatment for a variety of health conditions, including depression, osteoarthritis, and liver disease. As a dietary supplement, it is most often used for improving symptoms of depression and for osteoarthritis. In regard to depression, research suggests that SAM-e may be more effective than placebo in reducing the severity of depression and may be as effective as certain antidepressants for some individuals. However, more research is needed. Similarly, for osteoarthritis, some studies show that it is as effective in reducing symptoms for some individuals as NSAIDs (e.g., ibuprofen). There are a variety of different forms of SAM-e supplements available on the market, typically different salt forms (e.g., sulfate, sulfate-p-toluenesulfonate, and butanedisulfonate), which may affect how well it is absorbed.

5-HTP, or 5-hydroxytryptophan, is a naturally-occurring amino acid and a precursor to the neurotransmitter serotonin. It is used as a dietary supplement to improve mood and help with anxiety, sleep disorders, and other conditions. It is also sometimes used in combination with other medications to treat migraines and fibromyalgia. The 5-HTP found in supplements is most often obtained from the seeds of the tropical shrub Griffonia simplicifolia