Gamma-aminobutyric acid (GABA) is a neurotransmitter and found naturally in the body. It is a chemical that works in the brain to transmit nerve impulses. GABA is used by some as a nutritional supplement for assorted alleged benefits. Side effects are mild and uncommon.
GABA is used as a sleep aid due to its ability to stimulate seratonin in the brain which relaxes the body making it ready for sleep. Additional seratonin in the system helps to elevate a person's mood, and GABA is often used as an an anti-depressant according to Wellsphere.com. GABA also stimulates the pituitary gland to produce human growth hormone, stimulating fat burning, which makes it attractive to body builders. It is not approved by the FDA due to its questionable effects on the production of GCH, human growth hormone.
GABA may cause tingling, tickling, itchy sensations in the face, neck and limbs which may indicate involvement with the circulatory system.
Since GABA relaxes the body, it can also cause excess sleepiness and drowsiness the following day after dosing. Its sedative qualities make it idea for use as a sleep aid.
Changes in breathing rate and shortness of breath have been documented.
Because GABA is a natural anxiety relief agent, higher dose can pose a problem producing aggravations in the case of anxiety and panic attacks reports Wellsphere.com.
Side Effects of IV Dose
eMedTV reports mild side effects reported when GABA was administered through an IV dose. They ranged from a sense of dysphoria, or feeling lightheaded and pleasant, to an elevation in blood pressure and heart rate.