Half Life of Gabapentin refers to the time duration required for half the drug to leave the body. Gabapentin needs about five half lives to be completely metabolized from the body. It can be estimated that it takes about 5-7 hours for Gabapentin to be eliminated completely from the body. However this time increases if the patient suffers from any such diseases that slows the metabolism level and longer the process of releasing the drug. The factors that affect the elimination time of Gabapentin from human body are:-