Guide Dogs of Texas provides Annual Continuing Education and Support (ACES) to all of our teams. During your ACES visit, an instructor will visit you to ensure that you and your dog are working in a safe and efficient manner.
Low GABA Levels. One of the main causes of sleep maintenance insomnia results from low levels of the brain chemical (neurotransmitter) called GABA. GABA is your main relaxing and tranquillising brain chemical.
Symptoms of insomnia can be caused by or be associated with: 1  Use of psychoactive drugs (such as stimulants), including certain medications, herbs, caffeine, nicotine, cocaine, amphetamines, methylphenidate, aripiprazole, MDMA, modafinil, or excessive alcohol intake.