That is how drugs such as Valium, Baclofen, Valproate and Neurontin work â by causing an increase of GABA production in the brain. Unfortunately, these drugs all have a plethora of side effects that they can cause as well as being potentially addictive, making them a poor solution for long-term use.
USPS Customer Service. 1  USPS contact numbers are available here for the customer to call the USPS phone number and speak to the representative. 2  Service number: 1-800-275-8777. 3  Domestic & International USPS Tracking: 1-800-222-1811.
How to Speak to a Live Person: It is close to impossible to speak to a live person at USPS so you need to follow the instructions below carefully. To speak to a USPS representative, call their toll free number at 800-275-8777 or 1-800-ASK-USPS.