GABA, an amino acid derivative, is the chief inhibitory neurotransmitter in the brain. Rather than stimulating neurons to fire, GABA inhibits neuronal activity. GABA is associated with mental states of calm and serenity, and also promotes muscle relaxation. Each tablet contains 750 mg of GABA.

According to an online magazine for bodybuilders, GABA may be converted into GHB in the brain, and both appear to have power actions in certain regions of the brain. It is unclear whether orally administered GABA is converted to GHB. GABA has been purported to increase the amount of the Human Growth Hormone for years. However, the results of those early studies have been seldom replicated, and we increasingly see admissions that previous claims were made too soon, or in error. Studies have now shown that GABA is not capable of penetrating the blood brain barrier.

Research has indicated that GABA may have a slight sedative effect. This is the strongest endorsement we have yet seen with regard to GABA as a sleep aid.

• 180 tablets for $23 is rather economical
• Source Naturals GABA is hypoallergenic
• Does not contain: yeast, dairy, egg, gluten, corn, soy, wheat, sugar, starch, salt, preservatives or artificial color, flavor or fragrance

• Not deemed appropriate for women who are pregnant or breastfeeding
• Some consumers may notice an increase in their pulse or heart rate
• GABA may cause some persons to experience an unpleasant tingling sensation around the head and neck
• Tested on animals

Can GABA be used for anxiety and sleeplessness? Will it be effective and safe for the majority of consumers? We are not able to give a definite yes to either of these questions. Research will likely continue on this topic. We have read of some consumers who include a small dosage of GABA with other trusted sleep aids, such as Valerian and Melatonin, but we are still not convinced enough to support this application. Low levels of GABA are said to be associated with depression, irritability, anxiety and sleeplessness in many adult consumers. We advise caution and patience; there are many quality alternatives available.

We believe that a sleep supplement made with Melatonin may be just the right product for sleeplessness. Melatonin is an antioxidant and hormone that we begin to lose as we age. It regulates the sleep cycle, and when diminished, we observe inconsistent sleep with frequent disruptions. Quality sleep is so important for our overall health and well being. We suggest finding a supplement made with Melatonin as one of its main ingredients. A patented delivery system may be as equally important as high quality ingredients; individuals may wish to look for a product that is clinically proven to work safely and fast.